General Electronics

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Running a motor in a vacuum

I got into a debate recently regarding motors and the need for air cooling, can somebody confirm wether or not a normal...
7 comments posted 21yrs
posted by scorsi
7 comments posted 21yrs posted by scorsi

Noise leaking from PSU to mic amp

Hi, I have just built a PCB which holds a switched power supply and a microphone amplifier. The power supply runs a cam...
11 comments posted 21yrs
posted by d.kellyNOSPAM
11 comments posted 21yrs posted by d.kellyNOSPAM

Luxeonic Star - Cheap Malaysian Ripoff??

Weird. I dunno what to think. http://www.luxeonics.com/ -- @@F@r@o@m@@O@r@a@n@g@e@@C@o@u@n@t@y@,@@C@a@l@,@@w@h@e@r@e@@...
7 comments posted 21yrs
posted by NOSPAM
7 comments posted 21yrs posted by NOSPAM

Tektronix plug-in interchangeability

Does anyone have a URL for, or direct knowledge of, information on the interchangeability of various Tektronix plug-in...
14 comments posted 21yrs
posted by ndrez
14 comments posted 21yrs posted by ndrez

Al Williams' book on PCBs

I was looking through Al Williams' TAB book on making your own printed circuit boards this evening in a bookstore. One...
14 comments posted 21yrs
posted by ara
14 comments posted 21yrs posted by ara

Wanted: Simple Sensitive Light Detector Circuit

I need a sensitive light detector that i can place in front of the eyepiece of a binocular. This detector should sound...
0 comments posted 21yrs
posted by puns
0 comments posted 21yrs posted by puns

Beware "Catch-22" at Guru.com

Read the fine print. Basically, the paid membership isn't anything near worth paying for unless you have a paying contr...
0 comments posted 21yrs
posted by sporkedUNDERLINEagainMUNGE
0 comments posted 21yrs posted by sporkedUNDERLINEagainMUNGE

bedbugs

I realize that discarded electronics found on the street can be useful, if only for parts. However, I was told recently...
4 comments posted 21yrs
posted by ara
4 comments posted 21yrs posted by ara

D-Cell mAh: lithium vs NiMH vs regular alkaline

Questions. 1. I've found online a NiMH D-Cell boasting 11,000 mAh for $9. Can that be true? 2. The few Li-ion in D-Cell...
8 comments posted 21yrs
posted by tgm2tothe10thpower
8 comments posted 21yrs posted by tgm2tothe10thpower

motorola v60gi and hf car kit

I own a Cingular v60 and when I hook it up to my hf carkit, the backlight gives off an irritating feedback (kinda maybe...
3 comments posted 21yrs
posted by knairad
3 comments posted 21yrs posted by knairad