General Electronics

Help With A Schematic

I've just completed this device and it does what it's supposed to(distort a guitars output signal) but has no gain... C...

3 comments posted 20yrs

posted by william_gallagher

3 comments posted 20yrs posted by william_gallagher

MOSFET question: Drive voltage vs. Vgs(th)

Can anyone tell me the difference between the drive voltage and the gate-to-source threshold voltage (Vgs,th) of a MOSF...

3 comments posted 20yrs

posted by accolade

3 comments posted 20yrs posted by accolade

Detecting down to 25mA-150mA on 0-20A line?

I'd like to use a 20A CC/CV power supply to charge LiPo cells and want to terminate the charge when the charging curren...

45 comments posted 20yrs

posted by jmuchow

45 comments posted 20yrs posted by jmuchow

A Non-friction bicycle lights generator (dynamo)

In this new generation bicycle light system, no battery is needed, no friction on any parts of the bicycle. The lights...

2 comments posted 20yrs

posted by iwicom

2 comments posted 20yrs posted by iwicom

Microphone (3.5mm plug) to an ADC (phono interface)

Basically I want to connect a microphone which has a 3.5mm end and connect this into a phono input. I was told I need t...

4 comments posted 20yrs

posted by binodbista

4 comments posted 20yrs posted by binodbista

Power supplies in parallel for more current/same voltage?

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi everyone! I am trying to find a cheap way I can increase the current c...

16 comments posted 20yrs

posted by videoman

16 comments posted 20yrs posted by videoman

FS: AT GBIP Cards

I have 3 ISA GPIB Cards for sale 2) National AT-GBIP /TNT $25.00 each (shipping included) 1 ) CEC PC 488 $15.00 (shippin...

2 comments posted 20yrs

posted by spamnot

2 comments posted 20yrs posted by spamnot

On the Effectiveness of Aluminium Foil Helmets...

Just nominated this for an ignobel... http://people.csail.mit.edu/rahimi/helmet/ On the Effectiveness of Aluminium Foil...

4 comments posted 20yrs

posted by colin.watters

4 comments posted 20yrs posted by colin.watters

UK / USA Tool Terminology Translator

I can never find a translation file for converting commonly used terms for technical tools and equipment etc in the UK...

8 comments posted 20yrs

posted by diverse

8 comments posted 20yrs posted by diverse

Shareware O-scope for use with National Instrmt DAQs?

I need to work with audio signals, down to and *including* DC (so sound-cards are out). Have found a relatively low cos...

3 comments posted 20yrs

posted by scottk

3 comments posted 20yrs posted by scottk

Simple LED circuit.. HELP!

I am having problems with this one, and it shouldnt be that hard... I have a 9v battery, and I want an LED to be on abo...

7 comments posted 20yrs

posted by gordonjs

7 comments posted 20yrs posted by gordonjs

Vibrator motor internals.

A hamfest dealer had some really small cellphone/pager vibrator motors for $.25 each. Curious to see how they were cons...

2 comments posted 20yrs

posted by dwarner22

2 comments posted 20yrs posted by dwarner22

Commercial mains wiring: 12ga wire for 30 amp load?

NEC reference says that 12ga THHN wire can carry 30A max current. Motor load is currently drawing constant 20A (230v 1p...

27 comments posted 20yrs

posted by anon

27 comments posted 20yrs posted by anon

PCB Supplies in Atlanta?

Hey all-- I'm looking to start learning to make PCBs. I bought the book "Build Your Own Printed Circuit Board" by Al Wi...

10 comments posted 20yrs

posted by mehaase

10 comments posted 20yrs posted by mehaase

cps parts clearout

cps electronics in the uk are clearing out a lot of stock at apparently they are closing down parts section early next y...

0 comments posted 20yrs

posted by exxos

0 comments posted 20yrs posted by exxos