Hobby Electronics Basics

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touchplate dimmer switch oddity

In my front room, I have one of those dimmer switches where you touch a metal plate on the front to turn the light up o...
1 comments posted 22yrs
posted by news4
1 comments posted 22yrs posted by news4

reading capacitor value from code printed on it?

I have a circuit board with a capacitor that needs replacing (it got burned when an adjacent triac went out). The capac...
4 comments posted 22yrs
posted by equipoise1
4 comments posted 22yrs posted by equipoise1

DC Motor overvoltage

I want to run a 3.6V DC motor from a 12V battery. The motor will not run continously, only 0.5sec at a time with severa...
8 comments posted 22yrs
posted by nospam.emil.johnsen
8 comments posted 22yrs posted by nospam.emil.johnsen

Need help with a circuit

I have a circuit that requires a 10k pot to function correctly. The problem that the device that has to be used has a 5...
6 comments posted 22yrs
posted by wrightj
6 comments posted 22yrs posted by wrightj

Offset voltage on voltage follower

Hi I need a bit of help on a circuit im trying to build. I will try to explain my problem below. Circuit requirements:...
11 comments posted 22yrs
posted by tuurbo46
11 comments posted 22yrs posted by tuurbo46

Question: EMI Shielding for IDE cables

(Long story) I am having problems with hard drive data corruption. I have recently rebuilt some of my computers in rack...
11 comments posted 22yrs
posted by user
11 comments posted 22yrs posted by user

bps to hex

I have calulated 300 bps as 12c (by calculator) But the answer is 0x0000012c, why does the calculator not give this? I'd...
9 comments posted 22yrs
posted by not_here.5.species8350
9 comments posted 22yrs posted by not_here.5.species8350

aprs watch

Hi, I am interested in a aprs watch ( gps ic based homebrew gps watch ). I am interested in single chip gps circuits ca...
0 comments posted 22yrs
posted by gabriele.betti
0 comments posted 22yrs posted by gabriele.betti

Did low voltage cause the pc to fail?

G'day from a long way away.... I am struggling with an argument about a couple of damaged home computers and I was wond...
21 comments posted 22yrs
posted by xvreddog
21 comments posted 22yrs posted by xvreddog

BGA Flash chip question

I have a 48-ball BGA flash chip that I'd like to read the data off of. Are there other ways of doing this besides buyin...
1 comments posted 22yrs
posted by pj2k4
1 comments posted 22yrs posted by pj2k4

9V Battery Current

I posted a message a week back but never received the answer I was looking for. I have an electromagnet hooked-up to a...
34 comments posted 22yrs
posted by chad.waldman
34 comments posted 22yrs posted by chad.waldman

555 timer cookbook

Does anyone know a good cookbook for 555 timer? Thanks.
2 comments posted 22yrs
posted by parkc23
2 comments posted 22yrs posted by parkc23

Power Supply for a portable audio device

Hi I'm designing the power supply for a portable audio device. It has a SHARC DSP, some interface logic and amplifiers....
1 comments posted 22yrs
posted by user242
1 comments posted 22yrs posted by user242

Solar Lighting

I know it would be easier to buy a new one, but I want to learn about this. We have a box that charges 2 AAs during the...
1 comments posted 22yrs
posted by lhom
1 comments posted 22yrs posted by lhom

Engineering Mathematics

Hi Im about to start my last year at uni and im trying to find a good web site that will consider answering some mind b...
6 comments posted 22yrs
posted by tuurbo46
6 comments posted 22yrs posted by tuurbo46