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Well there's your problem right there. Transformers only work for AC. It's inductive coupling. As the primary's voltage goes up and down, a magnetic field expands and collapses. This magnetic

Oh yeah -- I also got a few IC's in the package. Is there a directory (online or otherwise) that can identify their function, and (hopefully!) indicate what the pins do? Thanks -- Z

Greetings all, I won a small box of assorted electronic components on eBay, which arrived today. I'm still trying to evaluate + test all of them, but I have a question regarding transformers. The box

The audio bandwidth over telephone connections is too low to support full-motion video. However, amateur radio operators have been sending color pictures over the airwaves using the small audio

Well, first you should learn a bit about the nature of a video signal, and the frequency response of telephone systems. The audio in telephones is of a very limited band. Something like 500-3000 Hz

oh, btw, they sell things for old tv's that have a coax to a two wire split forked piece that you screw down... I've got one for an old console that's not cable ready. They're real common. Considering

what's wrong with using a coax?! Joshua ---- "A meow massages the heart." nKode / Pulse 8 - aim:jkerseyVCSO http://www.goodtimetribe.com http://www.mp3.com/stations/d-r-e-a-m

I want to send a video by telephone line, but i dont know how to start im lookin for a circuit that modulate the telephone line with a viedo sinal and at the other end it demodulate to see this

Well, you could do some experiments with pulse width modulation. I hear that is used quite a bit for pulse DC motor control. You can make this with a 555 timer circuit like

Can Any one give me Any info on how to mod DVD players so they are multi code????? )O( )O( )O( )O( )O( )O( )O( )O( )O( )O( )O( )O( )O( )O( The Sinister Dragon Hey, Just because

Hello. I'm trying to run a 24v D/C gear motor with the ability to control RPM between 20 - 35. Continuous operation, 9 hours per day. 50 inch oz. of torque. Looking at the Molon C15, or other type

I have a large quantity of used Futaba M202SD08 standard character display modules (vacuum flourescent displays or VFDs) for sale for $15.00 each, with free shipping. (Free shipping applies to US

I have a large quantity of used Futaba M202SD08 standard character display modules (vacuum flourescent displays or VFDs) for sale for $15.00 each, with free shipping. (US only). On my VFD page at

Yup. It's a Law. As far as I know, voltage controls current, but it doesn't work the other way around. There are transistor circuits in which input current will control output voltage, but that's

Hey, when you're not up against a deadline, I'd like to hear more about this project. I dream of doing similar things :) -- Z

right.. i *did* previously realise that in the v=ir equation, smaller values of r would mathematically increase v, and larger would increase :) i'm waay shagged out, and haven't got any results any

okay, v=ir, right. i've tried using resistors rated at a fraction than an ohm, but i'm not getting any increase in voltage, and all the amplifier info i can find uses a 'signal' voltage and a

I recall a book called 'Electronics 101'. Is it still availalbe? Where can it be found (online store?)?

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Cool. Glad to have been of help, even if I barely had a clue :) Anyone know how to quieten a switching power supply for use in audio circuitry? I have a cheapy power supply laying around, and am