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/hamradio/ - Electronics

For the discussion of electronics, tinkering, radio, amateur radio, and related electromagnetic phenomena and communications.

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/philosophy/ - In the mountains of truth you will never climb in vain.

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File: 1425522766479.jpg (17.21 KB, 240x160, 3:2, man-headphones-configures-….jpg)

 No.180[Reply]

Welcome to /hamradio/

http://8ch.net/hamradio/rules.html

Have an excellent day.

LocalLink:

http://8ch.net/hamradio/

List of some Ham Radio activities:

http://www.qsl.net/w2vtm/hamactivities.html

http://www.arhab.org/

Youtube channels:

https://www.youtube.com/channel/UCPhfct0hwCpv_q6_BVSFsRA

https://www.youtube.com/user/w2aew/videos

Resources:

Component and parts sources:

http://digikey.com

Flat rate shipping. Great for transistors.

http://www.mouser.com

http://www.elexp.com/

^ Good prices on silver mica caps/ 1N34A diodes/ if American.

http://allcan.com/

You can order from a dealer or your local radio shop

http://www.minicircuits.com

Good mixers/ amplfiers/ etc.

Post too long. Click here to view the full text.
21 posts and 34 image replies omitted. Click reply to view.
Post last edited at

 No.901




File: aaa38caace2eefb⋯.jpg (33.27 KB, 580x434, 290:217, tm6m.jpg)

 No.946[Reply]

I just passed my technician exam. Now what.

 No.947

It depends on what interests you. For me, I got a 2m radio and started building antennas, then a soundmodem interface to do packet/APRS and now I'm starting on satellite work.

You might decide that the 10m nets or QRP CW on 80m are more to your liking. Find your local ham group and see what they're up to.

Once you get an idea of what you want to do then go to a hamfest and talk to people, buy something that will further your ability to do something interesting.


 No.948

>>947

I got my ham radio license for rc controlled airplanes. Haven't really thought about using it to talk to people. Is it worth using radio to talk to people?


 No.949

>>948

I'm much more partial to data but I volunteered at a large area sports event as part of a ham team that did comms. Got put in a cell phone dead spot and called in for breakdowns. That was fun.




File: 61df3cb1d464056⋯.png (664.7 KB, 2096x973, 2096:973, 2017-12-17 00:09:56_118.png)

 No.903[Reply]

I'm planning on buying pic related.

I realize it's one of the cheapest around and probably shit by your standards. But I plan to use them only ocasionally, for trips or communicating during events at university and the like.

Are they OK for the price?

Any particular headaches they would give me?

This pack includes 2 batteries per radio, which is cool.

18 posts and 1 image reply omitted. Click reply to view.

 No.940

I'd like to hijack this thread with a very similar dilemma. I moved to the sticks, and all my neighbors are amazing people, but getting up in years. I'd like to get a few long range radios so we can all keep in touch for things like "I'm snowed in, can't get to my woodpile" or "help, I've fallen and I can't get up". my best neighbors are just too far to be driving/walking to daily just to checkup on them, and I thought a walkie talkie would be a great solution. furthest neighbors are 3 miles away, but there's a hilltop between me and them. Since I do live in the sticks, I don't think my radio communication would interfere with anything around me, but I'm not averse to getting a license, provided it'd cover me and the neighbors use of the radios. I'd prefer to get something with a charger base, so they could be left on at all times when at home, and I'm also curious if there's something like a wireless alert one could get to pair with a radio; something like a bracelet, or a necklace with a button that could be clicked that would cause your radio to send out a distress signal to all the radios around it. I don't see my neighbors wearing the walkie talkies on them at all time, but I do see my neighbors falling, and being unable to reach the walkie talkies.


 No.941

>>940

Communicating with other rural neighbours is something that CB is good for. An old girlfriend's family lives/runs a Cattle station in outback Queensland Australia, and there's an AM 27MHz CB Net every morning with the other properties up with ?100 miles away (there's a decent antenna there.)

For your situation that's probably not that demanding, UHF CBs might do. And to make handhelds a thing, a centrally-located Repeater would handle them (incoming 5 watt signals from HHs, retransmits at ~50W with a decent antenna). While CBs don't need a licence to operate, FCC or whoever will need one for a repeater– but it's the sort of thing a club or group can handle.


 No.942

>>941

Appreciate the reply

The only issue I've thought up with the repeater idea (already mulled it over prior to your reply), is that 1: yea, license to operate would definitely come up then and 2: the central area isn't on my property, so I'd basically be coming up with this very elaborate setup, then forcing a neighbor to hold the tower and power it, then trying to convince everyone that it's a good idea.

Idk, maybe I'm reinventing the wheel here. there are landlines available in the neighborhood, but our lots are big enough that you'd easily be outside of your dock's range if you went to check on the chickens, or to cut a tree down. This all kinda started when I went to check on one of the older guys who lives alone, and found his walkway to his garage was an ice rink. I kinda freaked out and spent the next three hours smashing ice with a mattock. I'd hate to have him fall outdoors while he was wearing just a light jacket on his way to get more wood, or going to check on his cat and be stranded out there. life alert would only tell the local dispatch, who is easily an hour out. [MIDPOST THOUGHT]: just dawned on me I have a neighbor in the middle of the neighborhood who is a wildland firefighter. him and his son (different homes, same neighborhood) are both in possession of a long range radio that receives both the police dispatch, and the EMT radios, so that changes my thoughts quite a bit. currently waiting on my old man to call me back with a price quote for a life alert membership (grandma has one).

In the meantime, I plan on probably ordering a set of walkie talkies that have good reviews on amazon, and testing them in the neighborhood to see their range, and how well they'd work for part of the setup. I looked into the motorola t200 mentioned here, but the reviews seemed pretty divided on the quality, and battery life sounded atrocious.


 No.944

>>942

What about PLBs –admittedly they're Last Resort devices, and not the thing for someone that 'just' broke a leg.


 No.945

File: ca6b67755d194d7⋯.jpg (46.64 KB, 500x500, 1:1, talkie.jpg)

>>944

after some consideration, I decided to go with a system that uses the landline to dial 4 numbers+911. it's a one time only purchase, and the reviews and stats are all positive. In addition, I ordered some cheapie high powered walkie talkies off amazon. I'll be testing them out to see if they're good enough to warrant getting more, but for 17 bucks it was too hard to pass up.




File: 4296b0414f901d7⋯.mp4 (338.9 KB, 640x480, 4:3, 20180107-moesat.mp4)

 No.935[Reply]

Moe-sat AO-91 ^_^

(I recall someone made a mascot for the Hayabusa probe.. any others?)

 No.936

File: 815aed9a95e5832⋯.jpg (574.43 KB, 543x758, 543:758, animebooks-com_2271_112254….jpg)

Found the Hayabusa one: "Asteroid Explorer Hayabusa"


 No.939

File: 879dad9f7cd889b⋯.jpg (280.84 KB, 1200x885, 80:59, 20180128-095156-rich-radio.jpg)

IRL heart-attack inducing Moe at the Sydney/VK2WI 'Trash & Treasure' day. One of the guys who was selling gear brought his cute Yotsuba-level daughter along…

"I'm a rich radio" :D




File: 2dd861065195b90⋯.webm (965.57 KB, 640x360, 16:9, grandma and grandpa jihad.webm)

 No.938[Reply]

Does anybody have the King Schools HAM radio course? It was this fantastic 6 hour long VHS tape that introduced HAM to an absolute beginner. It used to be on Youtube, but it got set to private and the copy I downloaded has gone missing.

 No.943

File: f26b5fe886e1408⋯.jpg (83.54 KB, 634x454, 317:227, 100v-220v.jpg)

Seconding!




File: c9ee7dc65086699⋯.jpeg (137.05 KB, 576x461, 576:461, tmp1LsVMr.jpeg)

 No.865[Reply]

What's to keep someone from shitting up all the radio airwaves by broadcasting "Rick Astley Never Gonna Give You Up" on every frequency, at maximum volume, indefinitely? I mean on the internet they could just find who you are because of IP addresses, but the radio waves are anonymous and there would be no way for the radio police to ever find you.

I don't know anything about ham radio by the way, but this is a question I wonder frequently.

3 posts omitted. Click reply to view.

 No.871

File: 7a990bdfa174ec0⋯.jpg (48.12 KB, 492x376, 123:94, diplomat.jpg)

>>868

oh…okay \-:


 No.872

>>871

you probably get the same fine as everyone else. Good luck on paying off fines greater than a liberal arts Major's debt.


 No.873


 No.875

>>873

>Mr Guernsey’s violations included the deliberate playing of music on top of the transmissions of other amateur operators in order to obstruct their ability to communicate on the frequency,” the FCC recounted in the July 22 Forfeiture Order. “Mr Guernsey further used various animal noises to prevent the communications of other stations with whom he had a longstanding and well-documented dispute.”

that's pretty funny.


 No.937

The issue is that the radio waves aren't just populated by HAMS but by the Military, Emergency Services, and Local Law Enforcement, as well as old Boomers who have the righteous fury of a thousand suns.




File: 7568d8e1968384d⋯.jpeg (96.12 KB, 1476x1038, 246:173, download.jpeg)

 No.858[Reply]

Can someone list the pros and cons of

Straight Keys

Bug Keys

Iambic Paddles

4 posts omitted. Click reply to view.

 No.930

File: 2d70b61a2275c2b⋯.jpg (195.81 KB, 967x800, 967:800, 20170512-223808-morsekeys2.jpg)

File: ab9f6c23990d2bc⋯.jpg (288.79 KB, 1315x800, 263:160, 20170512-223814-morsekeys1.jpg)

File: d894f7eb9add04c⋯.jpg (213.8 KB, 1126x800, 563:400, 20170512-230349-vibroplex.jpg)

Some photos of keys I blogged about 6 months ago..


 No.931

File: a26c680794ed314⋯.jpg (124.58 KB, 1200x488, 150:61, 20170512-225738-czec.jpg)

File: 44916bdc02640ff⋯.jpg (177.7 KB, 778x800, 389:400, 20170512-224312-training-r….jpg)

File: 11ba6920f976e45⋯.jpg (179.45 KB, 1141x729, 1141:729, 20170512-230411-marconi-cl….jpg)


 No.932

File: 4f5c90789c71d1a⋯.jpg (49.17 KB, 800x800, 1:1, 50300_orig.jpg)

>>929

Ameco bakelite $12 USD. All a straight key is doing is completing a circuit. You can build one yourself if you wanted to.


 No.933

>>932

I have built a few, all are shit.

I'll take a look if I can source that.

Thanks for the suggestion.


 No.934

>>933

I expect the big part of learning Morse is getting the rhythm down, which a properly balanced key helps with, and a thrown-together switch doesn't.

Note also how the 'British'? keys have a spark-guard, and the American-style ones don't. Apparently the subtle difference in key grip and action is what gives the Yanks RSI and had them invent Bugs and the like…




File: b3503356785a44e⋯.png (21.46 KB, 373x263, 373:263, serveimage.png)

 No.918[Reply]

recently licensed technician here, I need help figuring out just what I want for my home base upgrade.

locally, I have about 4-7 repeaters I can reach on VHF/UHF. I live in a rural area, so I don't think I get much simplex activity on those bands.

HF is starting to interest me, I've been mostly listening on my sony, but I'm having trouble deciding what I want.

I want to upgrade my base station, I've currently got a leixen VV-898S w. a 12w power supply, but I want to be able to prepare myself for HF listening and transmitting. I'm leaning more towards yaesu models since I've got a VX-6R, and the cables needed for programming with CHIRP.

my point is, I want to upgrade from my cheap chinese crap transceiver, but I'm afraid of tossing my money away.

 No.919

More or less all the modern big-3 (Icom, Yaesu, Kenwood) HF transceivers are decent these days.

No absolute garbage.

So it's more of a question about features and ergonomics. Imo.

I'd suggest just getting a relatively modern 100W HF rig with good reviews.

Read the reviews and look at videos to see how they are operated.

Most of the "cheaper" rigs (1000-1500usd) have tons of menus.

If the rig does not have a built in tuner, get an external one. Be it manual or an autotuner.

If you want to invest on something right away, get a decent power supply that can supply around 40Amps of 13.8V. You can likely get away with less. Most cheaper rigs don't come with internal powersupplies, instead they accept 13.8V (the nominal 12V you encounter in cars).

That means that you can easily run them off batteries or in your car for mobile use.

>> but I'm afraid of tossing my money away.

That I cannot really fix.

What do you want to do?

I like building things and hackign things. Operation is secondary to building.

Some folks chase DX.

Some folks contest.

Some folks contest on 10GHz on a hilltop.

Some folks QSO via LEO satellites.

My first bough HF rig was an Icom IC-735. It was fine and all. Sold it to a friend and bought a Yaesu FT-897, as it had 6m, 2m and 70cm SSB and used it for 2m and 70cm contesting.

I still have it and feel that it's good enough of a base rig for myself.

But I operate quite little HF.

My current most used radio is my AR-8200 scanner and Wouxun kg-uvd2p 70MHz/435Mhz dualbander.

Building a mcHF by M0NKA. It's a small portable HF rig that's SDR based. and a kit.

Also working on my own versiPost too long. Click here to view the full text.


 No.923

I have a UHF-VHF handheld and have been looking into getting a base transceiver. The two models I'm interested in are the icom IC-718 which you can get for around $500-$600 USD and Yeasu FT-450D for $600-700 USD. The icom is pure HF and doesn't support FM. The Yeasu is HF+6m with FM. Kenwood has some nice base transceivers as well, but they're all expensive as fuck.


 No.928

>>923

Unless you are interested in 10m FM repeaters or chasing 6m sporadic-E in the summer. I see no need for 6m or FM.

But I do hear good things about FT-450D, none of my friends have gotten annoyed with it and it's a good solid radio.

The built in antenna tuner is also nice, which the IC-718 lacks.

When you count in possibly getting an external antenna tuner (even if external antenna tuners are much more capable than the built in units) the difference starts to evaporate.

If you are planing on getting a multiband antenna like G5RV then the built in antenna tuner will benefit you.




File: 8ec7e0bbfc7149f⋯.jpg (78.29 KB, 458x371, 458:371, hamcar.jpg)

 No.897[Reply]

What kind of radio receiver can I mount in my truck so I can listen to ham radio?

Do I still need a license to listen even if I dont have any intent or installed hardware for broadcasting?

1 post omitted. Click reply to view.

 No.899

You will find that most mobile and hand held transceivers do VHF and UHF, but not HF. If you do a lot of driving, a mobile transceiver might be the best option.

A held held made more sense to me. My Yaesu has a DC port that I can connect to car cigarette lighter and SMA port for the antenna. You will definitely want an external antenna as reception inside a car isn't spectacular. You don't need a license if you're only receiving, but you must know it is illegal to listen to the cops if you are in transit. Most of them have moved on to P25 trunked systems which aren't supported on cheaper transceivers anyway.

If you want to get into radio, a technicians and general license really aren't that difficult to get. It costs all of $15 USD and you can retake the tests as many times as you want. If you pass one you can take the next up free of charge if its in one sitting.

As the other poster suggested, the repeater frequencies are where it's at. Repeaterbook.com will give you a listing of repeaters in your area.


 No.900

>>899

>most mobile and hand held transceivers do VHF and UHF, but not HF

I realized the retardedness of this statement. CB is on the ass end of HF. I'm not counting this.


 No.921

>>900

CB handhelds are quite rare, so it's ok.

Then there are also the Tokyo Hy-Power 15m/10m/6m HT, the MIzuho HT's from 80m and up. KX2 is the size of a HT from 1979 and has built in mic and speaker.

But yea. HF HT's are rare.


 No.922

>>921

My local shop has some Uniden models with CB, but I don't think they go past 70cm. Not that there's much need to.


 No.926

>>922

Maybe handheld scanners. but not transceivers.

It's quite common for scanners to go down to 20MHz or 25MHz.

Many handhelds from japanese manufacturers also have wideband receive from 0.5MHz to 999MHz or 1300MHz.

Btw most CB handhelds can be opened up to cover 12m and 10m.

Or vice versa 10m handhelds can be opened up to cover 11m.

Done that to a friends albrecht HT.




File: 0c986cbc86e7c3e⋯.jpeg (10.2 KB, 291x197, 291:197, 1.jpeg)

 No.829[Reply]

>FM radio station

нет

>ATSC broadcast

нет

>slowscan porn

нет

>shit talking

нет

>Advancing skills in the technical and communication phases of the radio art

>Spreading international goodwill

¯\_(ツ)_/¯

13 posts and 2 image replies omitted. Click reply to view.

 No.878

>>857

The VE sounds a bit like a crusty old fart who hates everything new.

So don't be discouraged if they consider everything that's not DX:ing CW and SSB rag chewing "not ham radio".


 No.879

>>878

I'd put it down to the conservative attitude that Amateurs have had to play to protect The Nice Things that need only a couple of ignorant legislators to take away. SDRs are somewhat dangerous in that they're available over Interwebs relatively cheaply to non-Ham filthy peasants and don't have much of the safeguards to stay legal, so the guy's gut instinct is kicking in (they do a bit for me, too..)

"Oh hey Facebook's150 million drugcuck degenerates, I'm using this SDR from eBay to listen-in to 950Mhz Cellphone traffic!"

FCC: "OH SNAP. SDRS NOW NEED A COMMERCIAL LICENSE TO OPERATE!"

Hams: "…but-but I just bought a $6000 SDR Rig for 3.4GHz…"


 No.882

>>879

Yep. The pessimists consider that just a matter of time.

Amusingly most transmit capable low cost SDR's are sold as laboratory equipment. As they have a snowballs chance in hell to pass any FCC regulations.

Flex & Co. are licenced as traditional amateur transceivers.


 No.890

What can you get away with in canada?


 No.895

>>890

http://www.ve7kfm.com/happymeal.mp3

I once had a good qso with him. Then there was a flood of abuse directed to him.

https://www.youtube.com/watch?v=BGwwIJ6sQao

http://www.ve7kfm.com/




File: 1433789238399.jpg (86.4 KB, 1266x760, 633:380, DipoleConst_A.jpg)

 No.358[Reply]

Hey guys, general class ham here. I've been trying to into HF for a while but I've been lost in what I should do when it comes to the antenna setup.

Obviously the size of the antenna should be based around the primary working band, but my problem is I'm not sure what band I want to work. I have an HF rig, a tuner (does balanced but requires me to buy a balun kit) and an external SWR meter. For making the antenna I have a bunch of new PL259 connectors and insulators.

My questions are: for someone who doesn't have a lot of money to spend on the hobby and hasn't been on HF basically ever, what would be a suggested band and antenna (inb4 dipole- there's a fuck-ton of variations) setup? What about station grounding and lightning protection?

Should I buy the balun kit and use ladder line to feed between the station and antenna, or just coax? What kind of coax should I use? I need to buy some for feeding between the radio and the other pieces of equipment at the very least.

Any help would be appreciated.

4 posts omitted. Click reply to view.

 No.451

Look into fan dipoles. You basically put 10, 20, 40/15, and 80 meter dipoles all on the same coax.

As far as baluns go , and actual balun is preferred.

What you can do instead though, is take a good long length of coax, and make a nice neat coil on something about like a #10 can. This is just an RF choke that will keep the shield from radiating. You can also use clip on ferrites, but you are more likely to have extra coax than to have clip on ferrites lying around.


 No.891

File: 96db2e1ed70b56c⋯.mp4 (2.77 MB, 640x360, 16:9, treetenna.mp4)

Fuck dipoles.

f u c k d i p o l e s


 No.892

Here's what I did with HD/Lowes stuff.

1 x 1 1/2ft long section of 3" wide PVC

Drill a coax sized hole near the top and bottom

1 x 4 screw-down terminal with holes on either side so you can fasten it to the inside of the PVC

You will only use two of the screws, but 2 screw terminals are hard to find

Insert coax into the bottom hole and coil it around the PVC until you get to the top hole

Insert it in there, then connect the shield to one terminal screw and the core to another.

Place 1 x 3" PVC cap on top and drill two small holes on either side for bolts. This is what you will fasten the elements to. This works best if you have a crimper and some eye hole connectors to feed the bolts through on the underside. Connect the eye hole wires to the shield and core terminal screws on the inside. Nut the bolts down on the top. You can use those eyehole connectors for the elements too, or place washers between the bare wire wrapped around the bolt. You will nut the elements down to the nuts already holding the bolts in place on the PVC cap.

From there, you can grab a coil of insulated copper wire for either element

300MM/MHz=Meters/2(halfwave)/2(element length) in Meters/0.3048 = Feet

You'll need an insulator between the elements and whatever you tie them to.

You will need a lightening arrestor between the coax and your gear. The lightening arrestor must be grounded with 10 gauge copper wire or thicker.

RG58/U is cheap and fine for HF

Thank me Reddit


 No.893

>>891

Is that cobalt dysprosium yttrium?


 No.894

>>893

*cobalt dysprosium




File: 1448302293194.jpg (83.75 KB, 562x441, 562:441, QRP-Pixie-CW-DIY-Kit-a-sim….jpg)

 No.566[Reply]

Well, I'm deciding to take a dive into making my own radio, I figured I start with a kit. Not only that, but I'm going to attempt to learn Morse. I have a General ticket, with I'm planning on upgrading once I get the hang of it.

Now, does anyone have any experience with with Pixie kits? Any tips on construction? Common problems to watch out for?

Also, what are some good resources for learning Morse? Anything including audio or even written based learning. Any tips for learning? Maybe even key building resources?

I may be a no-code ham, but at least I'm willing to try.

23 posts and 1 image reply omitted. Click reply to view.

 No.885

>>883

60/40 Rosin core?


 No.886

>>885

The help guide suggested silver bearing 0.015 solder, but it was like $40 - $60 USD on Amazon. I went with 63/37 0.015 rosin core instead. I have it all put together, then I realized I'll be using the speed and volume mods so I'll have to remove a few resistors.


 No.887

>>885

Why ever use 60/40 when 63/37 is readily available?


 No.888

>>887

What ever is cheaper and more available.

I use 63/37 mostly these days having eutectic tin is nice.

but 60/40 is fine, especially if it's cheaper.


 No.889

>>880

>>886

I completed the basic unit sans keyer speed, volume, and 9v battery mods. I went in to add the volume and grabbed the wrong pot thinking they were both the same. Half of the wires went up in smoke when I powered it on. One pot is 1M and the other 50k. Thankfully the wires are super thin and I don't think I fried any of the onboard components. It was a really dumb mistake.




File: 1445482990136.jpg (99.22 KB, 1410x985, 282:197, 1444965726686.jpg)

 No.530[Reply]

Are you brave enough to dox yourself and give out your call sign?

14 posts and 1 image reply omitted. Click reply to view.

 No.837

Romeo-Two-Sierra-Fuck-You :^).

Older one is United-Delta-Three-Sierra-haha-nope :^)


 No.864

VE4LRP is my call sign


 No.876

File: 59e8cd57200ac35⋯.mp4 (3.6 MB, 1280x720, 16:9, CrazySmallCPU doing Morse-….mp4)

VK2FJDA …which is a Novice call in VKland.

Got guys asking me regularly about upgrading, but I've been very busy with other projects to really give adequate time for studying.


 No.877

>>876

Should've mentioned, that's a CPU made out of just a half-dozen 74-series chips and some EPROMs.


 No.884

Kilo Golf Fiver Whiskey Alpha Romeo




File: ed8bb69d0fe5ee5⋯.png (31.65 KB, 862x300, 431:150, Screenshot_2017-11-10_06-4….png)

 No.870[Reply]

I've noticed Install Gentoo Wiki has a page for Software Radio, but nothing for HAM radio. I'm not a Wiki editing expert and there are some topics that I'm a little fuzzy on like polarization and ionospheric layering as it effects different frequencies. Moon bouncing RF is another interesting topic of which I know nothing about. Someone should definitely double check the formulas. I was hoping other cunts would add cunt specific info for their cunts as well. Nothing on transceiver hardware either. This shits exhausting.

https://wiki.installgentoo.com/index.php/HAM_Radio



File: 2f5434a3cd40153⋯.png (1.25 MB, 1920x1080, 16:9, 1.png)

 No.772[Reply]

This is what you guys look like

2 posts omitted. Click reply to view.

 No.854

Current Regulator

$ 1 0.000005 16.817414165184545 50 5 43

s 384 80 448 80 0 1 false

v 176 288 176 128 0 0 40 10 0 0 0.5

z 272 192 224 192 1 0.805904783 3.3

t 272 192 272 128 1 -1 5.963479268110467 -0.6446217076683265 100

r 256 128 176 128 0 400

w 224 192 176 128 0

r 272 192 272 288 0 320

w 272 288 176 288 0

w 288 128 416 128 0

w 416 128 416 176 0

r 416 176 416 208 0 100

174 368 208 432 272 0 1000 0.005 Resistance

w 416 272 416 288 0

w 416 288 272 288 0

w 368 208 416 208 0

w 416 272 432 272 0

w 432 272 432 240 0

p 288 128 320 160 1 0

o 10 64 0 4097 2.5 0.025 0 2 10 3


 No.855

These circuits can be simulated online using:

http://www.falstad.com/circuit/

Full wave bridge rectifier:

$ 1 0.000005 7.619785657297057 57 5 43

v 128 144 128 256 0 1 40 5 0 0 0.5

169 160 160 240 160 0 4 1 0.007993310524277415 2.1503284374467524e-9 2.1503284374467524e-9 0.99

w 160 160 160 144 0

w 160 144 128 144 0

w 160 224 160 256 0

w 160 256 128 256 0

d 304 128 336 96 1 0.805904783

d 368 128 336 96 1 0.805904783

d 336 160 368 128 1 0.805904783

d 336 160 304 128 1 0.805904783

w 304 128 288 128 0

w 288 128 288 160 0

s 240 160 288 160 0 0 false

s 240 224 288 224 0 0 false

w 288 224 384 224 0

w 384 224 384 128 0

w 384 128 368 128 0

w 336 96 400 96 0

w 336 160 400 160 0

s 416 96 416 128 0 1 false

r 416 128 416 160 0 1000

209 464 128 464 160 0 0.00001 0.7359536019008166 1

209 512 128 512 160 0 0.00001 2.1709234249548275 1

r 576 128 576 160 0 100000

r 624 128 624 160 0 1000

s 624 128 624 96 0 0 false

s 576 128 576 96 0 1 false

s 512 128 512 96 0 0 false

s 464 128 464 96 0 1 false

w 400 96 416 96 0

w 416 96 464 96 0

w 464 96 512 96 0

w 512 96 576 96 0

w 576 96 608 96 0

w 608 160 576 160 0

w 576 160 512 160 0

w 464 160 416 160 0Post too long. Click here to view the full text.


 No.856

Positive Half Wave Rectifier

$ 1 0.000005 7.619785657297057 57 5 43

v 128 144 128 256 0 1 40 5 0 0 0.5

w 160 144 128 144 0

d 160 144 240 144 1 0.805904783

r 240 144 240 256 0 1000

g 128 256 128 272 0

g 240 256 240 272 0

x 95 70 298 125 4 10 Current\sonly\sflows\sduring\spositive\s\\n\salternations\sand\scurrent\sis\sunidirectional.\\n\sAlso,\sthe\sdiode\sconducts\sslightly\s\\n\sless\sthan\s180\sdegrees\sof\sthe\swaveform\s\\n\sdue\sto\sthe\sforward\svoltage\sdrop.

x 20 324 351 327 6 24 Positive\sHalf\sWave\sRectifier

o 3 64 0 4099 5 0.00625 0 2 3 3

o 0 64 0 4099 5 0.0125 1 2 0 3


 No.862

Voltage Regulator With Over Current Protection

$ 1 0.000005 1.700203994009402 56 5 43

w 80 80 128 80 0

t 144 144 144 80 1 1 -4.030042144264638 0.6614583383656978 100

w 160 80 176 80 0

r 176 80 240 80 0 47

r 176 80 176 128 0 180

r 176 128 176 176 0 820

g 176 176 176 192 0

w 176 128 208 128 0

t 208 128 240 128 1 1 -1.6259882514769997 -0.6098593581498717 100

w 240 112 240 80 0

w 144 224 240 224 0

w 240 224 240 144 0

w 144 224 128 224 0

r 128 224 80 224 0 2700

r 80 224 80 320 0 330

w 80 320 144 320 0

t 192 272 144 272 0 1 -2.078360663046981 0.6036085941418285 100

w 144 256 144 224 0

w 144 320 144 288 0

172 80 80 80 48 0 6 10.05 15 0 0 0.5 Voltage

w 80 400 144 400 0

g 80 400 80 416 0

z 144 400 144 320 1 0.805904783 3.3

w 144 400 272 400 0

w 272 400 368 400 0

w 368 400 432 400 0

174 368 304 336 256 0 500 0.47030000000000005 Resistance

r 368 304 368 400 0 1200

w 336 272 192 272 0

w 368 240 368 208 0

r 368 208 368 128 0 120

w 368 128 368 80 0

w 368 80 240 80 0

w 368 80 416 80 0

209 416 80 416 128 0 0.00001 5.003828962408234 1

g 416 128 416 144 0

w 416 80 512 80 0

w 512 208 464 208 0

w 512 208 544 208 0

w 544 208 544 240 0

w 464 208 464 240 0

s 464 240 464 288 0 1 false

Post too long. Click here to view the full text.

 No.863

Another voltage regulator:

$ 1 0.000005 10.20027730826997 50 5 43

r 96 160 96 224 0 1000

t 192 208 192 144 1 1 -6.091479456546223 0.5975028208723145 100

t 208 128 208 80 1 1 -6.688982277418537 0.7168729130429448 100

t 288 176 288 224 1 1 -1.3143757339152593 0.051677456773031594 100

r 352 96 432 96 0 0.47

r 432 128 432 208 0 1000

174 432 208 464 288 0 5000 0.5693 Resistance

w 464 256 464 208 0

w 464 208 432 208 0

r 432 336 432 400 0 1000

209 144 352 144 416 0 0.00009999999999999999 0.5424616241489055 1

d 96 352 96 416 1 0.805904783

t 192 320 144 320 0 1 -5.293805857000706 0.6422530623041662 100

w 208 144 208 128 0

w 176 144 96 144 0

w 352 80 352 96 0

w 432 96 432 128 0

w 288 176 288 112 0

w 224 80 272 80 0

w 272 80 288 80 0

w 288 80 352 80 0

w 288 112 288 80 0

w 304 224 352 224 0

w 352 224 352 128 0

w 352 128 432 128 0

w 432 96 496 96 0

w 496 96 512 96 0

w 192 320 416 320 0

w 416 320 432 320 0

w 432 320 432 304 0

w 432 320 432 336 0

w 432 400 432 416 0

g 432 416 432 432 0

w 144 352 144 336 0

w 144 352 96 352 0

g 96 416 96 432 0

g 144 416 144 432 0

w 144 304 144 240 0

w 144 240 192 240 0

w 144 240 96 240 0

w 96 240 96 224 0

w 96 160 96 144 0

w 96 80 192 80 0

Post too long. Click here to view the full text.



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