Hobby Electronics Basics

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LED - Basic! - reference that shows wiring

I do "catch up" with newsgroups, so sorry but I can't recall who had asked similar questions as myself re: basic LED wi...
1 comments posted 18yrs
posted by me
1 comments posted 18yrs posted by me

LM380 Amplifier Volume Not Working

I am having trouble with a small battery operated amp based on the LM380 chip. The volume control isn't working, all it...
12 comments posted 18yrs
posted by the1930s
12 comments posted 18yrs posted by the1930s

Electronic Ballast for Fluorescent Light [Hack] ?

I have two identical electronic ballasts that will each power a 20 Watt tubular fluorescent light bulb. Will the two 20...
6 comments posted 18yrs
posted by insula
6 comments posted 18yrs posted by insula

vacuum tube testing

I need some assistance with testing some 6EJ7 vacuum tubes. In the past I have used several tube testers which are inop...
11 comments posted 18yrs
posted by lisdon
11 comments posted 18yrs posted by lisdon

electromagnet power

HI all, I just build two electro magnet with the same Gauss output, They have different iron core with different gauge...
5 comments posted 18yrs
posted by lerameur
5 comments posted 18yrs posted by lerameur

Codewheel Generator for Homebrew Optical Encoders

Howdy, Folks, I just released a freeware Win XP/Vista program that generates codewheel images and prints them to any ho...
29 comments posted 18yrs
posted by abuse
29 comments posted 18yrs posted by abuse

what do I need?!

hello, i'm a programmer who currently have started learning microcontroller programming (arm) using c. one thing that i...
6 comments posted 18yrs
posted by amit.kohan
6 comments posted 18yrs posted by amit.kohan

Block a load supplied by an LDO

Is there a simple method to block a load supplied by an LDO until the LDO reaches its regulated output? The rise time o...
6 comments posted 18yrs
posted by spamme
6 comments posted 18yrs posted by spamme

where use all three terminals on a potentiometer?

I have used two of the three terminals to vary the resistance for controling the gain or amplification for audio. I am...
4 comments posted 18yrs
posted by fordgwf
4 comments posted 18yrs posted by fordgwf

can someone recommend a really TRUE RMS meter?

I have a very noisy square pulse wave that I'm trying to measure the RMS current and RMS votlage of... my pulses can ha...
52 comments posted 18yrs
posted by panfilero
52 comments posted 18yrs posted by panfilero

Good Beginner Electronics Book

I am looking to learn more about electronics and what not. I have looked at a few books and purchased one. However, I d...
13 comments posted 18yrs
posted by danikar
13 comments posted 18yrs posted by danikar

about linearization techniques

Hi, i'm searching infomations about linearization techniques for power amplifiers. In particullary i'm searching pratic...
5 comments posted 18yrs
posted by utente
5 comments posted 18yrs posted by utente

Equipment for Electronics Lab

I'm setting up a hobbyist electronics lab. What kind of equipment should I buy to equip this lab? My budget is $3000.
12 comments posted 18yrs
posted by sodaant
12 comments posted 18yrs posted by sodaant

optocoupler trouble

I'm getting strange results from an optocoupler (aka optoisolator, and this is the kind with transistor output). In bri...
13 comments posted 18yrs
posted by strnbrg59
13 comments posted 18yrs posted by strnbrg59