Hobby Electronics Basics

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Definition of AC vs DC power

If I have an AC power supply alternating between -1V and +1V and I add to it (in series) a DC supply of 10V, is the res...
9 comments posted 17yrs
posted by nicgrande
9 comments posted 17yrs posted by nicgrande

native cad file in ASCII

Dear all I have developed a binary circuit using ultiboard and how can i generate Gerber files and native cad file in AS...
3 comments posted 17yrs
posted by josegidayfin
3 comments posted 17yrs posted by josegidayfin

SMT de-soldering

I have an SMT board with a jumper in the form of a 0 ohm resistor. I need to remove it, but I've never done anything wi...
35 comments posted 17yrs
posted by bobengelhardt
35 comments posted 17yrs posted by bobengelhardt

Help

Hello...first of all,sorry for my bad english...I need help. I am using a program Micro-cap, i have one sheme (BBB4 VLF...
0 comments posted 17yrs
posted by killerinstinct9999
0 comments posted 17yrs posted by killerinstinct9999

Mold in old electronics

I have several old tube-based organs. The repairman wouldn't work on them as he tried, claiming he has Chlamidya and wa...
10 comments posted 17yrs
posted by mike
10 comments posted 17yrs posted by mike

hiii

hiiiiiiii i want to join your group please responce me
1 comments posted 17yrs
posted by sdevraj56
1 comments posted 17yrs posted by sdevraj56

OT: Ever carry a 9 volt battery in your pocket?

Bad idea. Without thinking, I put a 9 volt battery in my pocket. Soon, either I noticed it getting warm or maybe my bra...
20 comments posted 17yrs
posted by jdoe
20 comments posted 17yrs posted by jdoe

Problem with a motor starter- 3phase 480 Volts

We are moving a hoist from a location in Pe. to our Ar shop. It was supposedly in working order and when we tried to wi...
4 comments posted 17yrs
posted by clannorm
4 comments posted 17yrs posted by clannorm

555 timer

I read somewhere that the #5 pin can be used to vary the oscillation rate. How please? R
2 comments posted 17yrs
posted by dewhurst
2 comments posted 17yrs posted by dewhurst

Current probe compatibility question

Hi, I have the tektronix oscilloscope TD1002, I find the Tektronix current probe a little bit expensive (A622). I am se...
4 comments posted 17yrs
posted by lerameur
4 comments posted 17yrs posted by lerameur

Altera EPLD problem

Hi, I have a problem with bringing out the INIT_DONE puls out of an Altera Flex 10k EPLD. I use Quartus II software on...
1 comments posted 17yrs
posted by bmw318
1 comments posted 17yrs posted by bmw318

flipping of earth's poles

Supposedly, the earth's magnetic poles have reversed several times. A permanent magnet implies a DC current. That means...
171 comments posted 17yrs
posted by r_delaney2001
171 comments posted 17yrs posted by r_delaney2001

Stereo-to-momo summing Y adapter?

Does anyone know of an off-the-shelf Y adapter that's got the summing resistors embedded? My DTV box has stereo out, an...
15 comments posted 17yrs
posted by richgrise
15 comments posted 17yrs posted by richgrise

radio reception oddity

I have an armband digital FM radio, for running. The earphone cord is the antenna. Reception is very sensitive to anten...
10 comments posted 17yrs
posted by r_delaney2001
10 comments posted 17yrs posted by r_delaney2001