Hobby Electronics Basics

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ANN: Open Instrumentation Project

This announces the Open Instrumentation Project (OIP), which has been formed to support open-source software and low co...
0 comments posted 20yrs
posted by phiscock
0 comments posted 20yrs posted by phiscock

Looking for some ideas for DC motor control

Greetings All, I'm working on a device to pull wire for welding. The mechanical part is done and now I'm trying to figu...
3 comments posted 20yrs
posted by etpm
3 comments posted 20yrs posted by etpm

any book or web resource out there?

is there any book or website out there dealing with the basics of electronics. i am a complete newbie to this area and d...
6 comments posted 20yrs
posted by ros060
6 comments posted 20yrs posted by ros060

PWM lighting quest!

Hi! i'v got two 12v halogen lamps connected to a single supply, not strong enough to drive both together. It's heard th...
14 comments posted 20yrs
posted by acorreya
14 comments posted 20yrs posted by acorreya

diode question

What am I missing here? Current flows from negative to positive, yet the schematic for a diode points from positive to n...
32 comments posted 20yrs
posted by randomname12345
32 comments posted 20yrs posted by randomname12345

Creating a higer wattage resistor

1) This is all hypothetical, and I'm not about to actually do this. 2) I realize that doing this will be ugly, immoral,...
39 comments posted 20yrs
posted by blahbleh666
39 comments posted 20yrs posted by blahbleh666

soldering problem

Hi everyone, I hope this counts as electronics as it's definitely a problem I'm having with an electronic circuit, but...
7 comments posted 20yrs
posted by mnrsiat
7 comments posted 20yrs posted by mnrsiat

Is it possible to multiply resistance?

I know resistors in series simply add up... but is there any way to mulitply resistance? eg: can I take a 10k pot and ma...
7 comments posted 20yrs
posted by randomname12345
7 comments posted 20yrs posted by randomname12345

Op-amp basic circuits questions

I've been reading about some basic op-amp circuits. The book has the circuit and then it gives the analysis. The analys...
3 comments posted 20yrs
posted by qwerty
3 comments posted 20yrs posted by qwerty

Size of Resistors

I'm a digital disginer who is having to some some pesky analog stuff. I've been desiging some circuits using pen and pa...
5 comments posted 20yrs
posted by graeme.cunningham
5 comments posted 20yrs posted by graeme.cunningham

timed igniter for metal halide lamps

Hello, Could anyone help me with designing a timed igniter for metal halide lamp which stops providing pulses to the la...
12 comments posted 20yrs
posted by kfel
12 comments posted 20yrs posted by kfel

fading red eyes

Hi all, I'm moderately knowledgable about electronics but have forgotten a lot ;) I am trying to use the fading red eye...
8 comments posted 20yrs
posted by stardockmagic
8 comments posted 20yrs posted by stardockmagic

powerPC simulation

Hello, am New to PCB board design cycle. Working on circuit having powerPC interfaced with nand flash,FPGA,DDR and ethe...
0 comments posted 20yrs
posted by santoshkadam
0 comments posted 20yrs posted by santoshkadam

my failure

recently ive made a few posts asking some beginner questions. well, here is a summary of my project from start to now:...
11 comments posted 20yrs
posted by randomname12345
11 comments posted 20yrs posted by randomname12345