Hobby Electronics Basics

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10nJ100 Capacitor ?

I need to figure out a replacement part for a board. Seaching Digikey, I cannot find any caps called "10nJ100" It has n...
4 comments posted 21yrs
posted by tim
4 comments posted 21yrs posted by tim

Finding probes for my cheapy o-scope

I got a BP Precision 1403A on ebay for almost nothing but there were no probes with it. I saw what appeared to be gener...
4 comments posted 21yrs
posted by clannorm
4 comments posted 21yrs posted by clannorm

telephone receiver as audio recording device

so i've seen people do this and want to know if its a simple thing or will take me some time and effort (which is total...
6 comments posted 21yrs
posted by aaagropus
6 comments posted 21yrs posted by aaagropus

Ultrafast recovery diodes

Currently designing something for which an ultrafast recovery diode is recommended but on checking the specs and packag...
5 comments posted 21yrs
posted by oparr
5 comments posted 21yrs posted by oparr

cdrom drive as stand-alone cd player?

Hi, anyone know how to make a normal PC CDROM drive play a standard audio CD (CD-DA), when only a power supply and no I...
8 comments posted 21yrs
posted by nospam
8 comments posted 21yrs posted by nospam

PWM control of a DC motor

Hi All, I have a basic question about PWM control of DC motors: Can all DC brush and brushless vibration motors, even s...
2 comments posted 21yrs
posted by a7b98208
2 comments posted 21yrs posted by a7b98208

Graphic LCD display

Someone knows where to buy 320x240 LCD graphic display with integrated controller? DL
1 comments posted 21yrs
posted by dan.lavoie
1 comments posted 21yrs posted by dan.lavoie

How do I make an automatic dog door?

The wife is getting a job that will not allow her to let the chahuahua out at noon. Is there a schematic that I can use...
3 comments posted 21yrs
posted by rmeadows3
3 comments posted 21yrs posted by rmeadows3

definition

Googled my brains out and can't find this. Looking at transformer specs, I sometimes see "output 24V (TC)" or VTC. The V...
4 comments posted 21yrs
posted by junker
4 comments posted 21yrs posted by junker

Estimating Temperature by Touch

I vaguely remember an engineer mentioning an old rule of thumb for quickly estimating temperatures on circuit boards: y...
11 comments posted 21yrs
posted by woody_brison
11 comments posted 21yrs posted by woody_brison

extend life

Is it better for the life of the electronics, HDD bearing, and/or monitor to turn all off or put into standby if I will...
6 comments posted 21yrs
posted by paul.marsREMOVE
6 comments posted 21yrs posted by paul.marsREMOVE