Hobby Electronics Basics

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Why not 400 Hz AC?

Reading the post about square wave AC I see that higher frequency AC makes for noisy motors and transformers. Is this t...
14 comments posted 19yrs
posted by etpm
14 comments posted 19yrs posted by etpm

90 degree stepper or oscillator motor

Does anyone make a 90 degree stepper or oscillator motor. Need something that will swing 90 degrees at 90 Hz.
3 comments posted 19yrs
posted by rnscrs
3 comments posted 19yrs posted by rnscrs

question on signal transformation

Hello gurus! I am beginner at electronics and I hope to get some help from you. Suppose, I have the following scheme: x...
0 comments posted 19yrs
posted by kiryazev
0 comments posted 19yrs posted by kiryazev

Fourier Transform

Fourier Transform is difficult for me. How can i practic this?
3 comments posted 19yrs
posted by polian22
3 comments posted 19yrs posted by polian22

Distributed capacitance effects inductor Q?

Does anyone know why the distributed winding capacitance of a loop antenna, or any inductor, degrades the efficiency? I...
3 comments posted 19yrs
posted by wrongaddress
3 comments posted 19yrs posted by wrongaddress

Basic question about LEDs with USB chip

Hi, I'm working on a device that uses a PIC chip to control 6 terminals via USB. The terminals can be signaled on/off i...
12 comments posted 19yrs
posted by onlinefuel
12 comments posted 19yrs posted by onlinefuel

Gain bandwidth product

I have been reading in wikipedia about Gain-bandwidth product and I wanted to ask if anyone knows why the openloop gain...
7 comments posted 19yrs
posted by asdfasfasfertert
7 comments posted 19yrs posted by asdfasfasfertert

Advanced Reluctance Motor

Advanced Reluctance Motor http://www.energeticforum.com/renewable-energy/368-bedini-advanced.html#post1414
0 comments posted 19yrs
posted by qiman13
0 comments posted 19yrs posted by qiman13

feesible idea for soldering ic's?

Teds post gave me an idea to solder in smt ic's using an idea similar to welding. Would it be possible to use a low vol...
21 comments posted 19yrs
posted by Jon_Slaughter
21 comments posted 19yrs posted by Jon_Slaughter

RF to optical converters

I was wondering if someone can help point me towards some information on how RF to optical converters and vice versa ty...
4 comments posted 19yrs
posted by mike7411
4 comments posted 19yrs posted by mike7411

Switching V-reg

Hello, I need to find a v-reg that turns 12 volts to 3.3volts and one that turns 12 volts to 5volts. Does anyone know an...
3 comments posted 19yrs
posted by joe.mckibben
3 comments posted 19yrs posted by joe.mckibben

Undervolt a stepper motor

Is there any reason not too? I've got a load of 24v steppers I've ripped out of dead printers. I'd like to use them in...
2 comments posted 19yrs
posted by richard.rowell
2 comments posted 19yrs posted by richard.rowell

Cursed

A princess walked into Radio Shack holding a frog. And she said to the sales person, "can you help me with this, my prin...
26 comments posted 19yrs
posted by wefles
26 comments posted 19yrs posted by wefles