Hobby Electronics Basics

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Basic questions

I cut in half a twin-lead antenna wire, typical 300 ohm wire. I inserted a Balun transformer on the first cut end to ma...
0 comments posted 21yrs
posted by treeline12345
0 comments posted 21yrs posted by treeline12345

Really easy question

Sorry for the really easy question but I am clueless when it come to this stuff. Problem: I am in the UK and I have an...
3 comments posted 21yrs
posted by arifshah1
3 comments posted 21yrs posted by arifshah1

Doubt about decoupling capacitors in high-freq PCBs

Hi, Im a total newbie to PCB design, i have to build a high-speed PCB for a board containing an Atmel At91 microcontrol...
12 comments posted 21yrs
posted by prehistorictoad2k
12 comments posted 21yrs posted by prehistorictoad2k

Adjusting Max current fault on APC UPS 280

I have an older APC Backups Pro 280 that is hooked up to my TiVo and big screen T.V. During scenes with a lot of white,...
0 comments posted 21yrs
posted by ray.straub
0 comments posted 21yrs posted by ray.straub

light up your wallet with 6 watts

A little while back, I was browsing some newsgroups and came across an article similar to this that said you could make...
2 comments posted 21yrs
posted by ednagarcialeon
2 comments posted 21yrs posted by ednagarcialeon

lighting circuit help

Hello, I was wondering if any here could help with a bit of info. I've been asked to help wire up a kinda chandelier "f...
1 comments posted 21yrs
posted by digitalhillbilly
1 comments posted 21yrs posted by digitalhillbilly

24 volt regulator

Hello. I want to build a simple DC voltage regulator circuit. I don't care about ripple because the voltage is from bat...
3 comments posted 21yrs
posted by asdas
3 comments posted 21yrs posted by asdas

small circuit help needed

To All, I have an interesting problem that I need to solve. I have an older electronic blackjack machine that has blown...
4 comments posted 21yrs
posted by rbelisle1
4 comments posted 21yrs posted by rbelisle1

Looking for STAMP consultant

How do I find somebody to do build a small STAMP project? I want to build a small timer safe.
0 comments posted 21yrs
posted by sammytaylor
0 comments posted 21yrs posted by sammytaylor

Quantum Physics and transistor action

Greetings, I wonder if anyone can help explain the use of Quantum Physics in explaining transistor action. IMO the flow...
3 comments posted 21yrs
posted by padmow_69
3 comments posted 21yrs posted by padmow_69

Is 50 MHz doable for a complete newbie?

Hello all, I'm a newbie when it comes to actually designing circuits at much of anything above about 1MHz or so. And at...
6 comments posted 21yrs
posted by weingart
6 comments posted 21yrs posted by weingart

USB Cable Soldering

My bunny chewed through my USB cable on my Wacom tablet, is it possible to solder it back together so that it will work...
3 comments posted 21yrs
posted by kimberly.shaffer
3 comments posted 21yrs posted by kimberly.shaffer

Chip Identification

I'm going through all these chips I got with a brad board on ebay, trying to find out what they all are. Instead of jus...
5 comments posted 21yrs
posted by 1qazse4
5 comments posted 21yrs posted by 1qazse4

MCM6290 datasheet

I'm looking for data sheet for Motorola 16K x 4 static RAM part number MCM6290 No luck on google search. However, I do h...
0 comments posted 21yrs
posted by Nospam
0 comments posted 21yrs posted by Nospam

Leaded or Unleaded Solder?

In the opinion or study of this ng, how much of a concern is lead-based solder to the health of the hobbyist in normal...
12 comments posted 21yrs
posted by blahbleh666
12 comments posted 21yrs posted by blahbleh666