Hobby Electronics Basics

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Need an adhesive for a CRT coil

I have a CRT monitor that has a dodgy Vertical deflection coil - the thin copper wire seems loose in places and far too...
7 comments posted 20yrs
posted by mark
7 comments posted 20yrs posted by mark

Noise and osci in audio amp

Hello! Maybe you can help me with this: My audio amplifier sounds bad: it sounds like it is overdriven, but not always,...
39 comments posted 20yrs
posted by 13thmonkey
39 comments posted 20yrs posted by 13thmonkey

color organ for bass

Ok so i been lookin all over the net for a lot of stuff related to this. This is what im tryin to do: Hook a light bulb...
2 comments posted 20yrs
posted by bungarian
2 comments posted 20yrs posted by bungarian

Broke ferrite core

Hello; I was disassembling a small power supply transformer that used one "E" and one "I" ferrite cores; it needed to b...
1 comments posted 20yrs
posted by Ejohnson1486
1 comments posted 20yrs posted by Ejohnson1486

Better Reception ?

I have seen radio tower when i dove. An idea struck me, i would like to connect my FM antenna to the lightning conducto...
9 comments posted 20yrs
posted by mowhoong
9 comments posted 20yrs posted by mowhoong

Help please with stepper driver step buffer

Greetings All, I'm trying to build a stepper motor driven indexer. The goal is to use the inherent accuracy of a steppe...
7 comments posted 20yrs
posted by etpm
7 comments posted 20yrs posted by etpm

5 volt supply straight from 240v AC mains

Hi, Please may I ask what the arrangement is when you see a single LED powered straight off of a mains power supply wit...
35 comments posted 20yrs
posted by retro
35 comments posted 20yrs posted by retro

making a fm transmitter

hello, i have seen alot of products that allow you to listen to your ipod or mp3 player through ur car stero, Im lookin...
2 comments posted 20yrs
posted by callumginty
2 comments posted 20yrs posted by callumginty

Filter USB power?

I have a set of LTB headphones. These headphones are designed for use with a PC. They have an amplifier that is powered...
2 comments posted 20yrs
posted by dont.spam
2 comments posted 20yrs posted by dont.spam

Broadcasts picked up from Guitar Amp

I was playing my guitar amp(digital) today and noticed after turning my guitars volumn down all the way that I heard so...
19 comments posted 20yrs
posted by Abstract.Dissonance
19 comments posted 20yrs posted by Abstract.Dissonance

Fuse for 24V Transformer

I'm wiring a remote ON/OFF switch for a large room (window mount) air conditioner which is otherwise accessible only vi...
5 comments posted 20yrs
posted by whatelse
5 comments posted 20yrs posted by whatelse

dental burrs for drilling holes in pc board

I hear dental burrs are superb for hand drilling holes in circuit board material. I went to a local dentist's office th...
9 comments posted 20yrs
posted by kellrobinson
9 comments posted 20yrs posted by kellrobinson

Simple DC circuit design help

Hi, I am building a trail camera where space (lack of) is a consideration in the case I an using. So I would like to el...
4 comments posted 20yrs
posted by Iam74Gibson
4 comments posted 20yrs posted by Iam74Gibson

HF welders or RF welders

What's the proper use of abreviation: HF welders or RF welders? http://www.hf-welders.com
0 comments posted 20yrs
posted by praca_dhz
0 comments posted 20yrs posted by praca_dhz

Fictional "Intercom System" Over City Power Lines

You guys all read books like "The Mad Scientist's Club" when you were kids, right? I recall that in this book they (the...
11 comments posted 20yrs
posted by blahbleh666
11 comments posted 20yrs posted by blahbleh666