Hobby Electronics Basics

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Troubleshooting guide

Hello! Thanks to everyone who gave me help a few weeks ago regarding the bass amplifier that was doused in soda. I ende...
5 comments posted 19yrs
posted by blahbleh666
5 comments posted 19yrs posted by blahbleh666

I need to share this with you!

I need to share this with you! It worked miracles for me!! Try it today!. Picking your nose and eating it is one of the...
1 comments posted 19yrs
posted by andrealephus
1 comments posted 19yrs posted by andrealephus

Impedance Calculation

Hello, I have a quick question. I have an RC low pass filter and I need to calculate the impedance so I can match it to...
3 comments posted 19yrs
posted by robd
3 comments posted 19yrs posted by robd

Convert output to input

Hi i was wondering if there was any way to convert a output connection on a laptop to a input connection? is there any d...
4 comments posted 19yrs
posted by Imbronyev_j08
4 comments posted 19yrs posted by Imbronyev_j08

Charging 2*SLA battery from Solar

I have an application that requires 2 12V 7.5 AHr lead acid batteries to be charged from 2 nominally 12V but actually n...
4 comments posted 19yrs
posted by nospam
4 comments posted 19yrs posted by nospam

USB powered desk fan

It is hot in my office and for some reason I don't have any available power outlets near me to power a desk fan so I wa...
20 comments posted 19yrs
posted by japroto
20 comments posted 19yrs posted by japroto

General purpose single-supply op-amp?

Can anyone recommend a good general purpose single-supply op-amp? Something better than the old LM324 (which has high i...
3 comments posted 19yrs
posted by NoSpam
3 comments posted 19yrs posted by NoSpam

blowing bulbs- revisited !

hi all, please could anyone who is bored enough have a look at these 2 wiring diagrams for me... they are both for the...
13 comments posted 19yrs
posted by a
13 comments posted 19yrs posted by a

How did they communicat ?

During my school days about 35 years ago, we were taught in our physics lessons, the radio wave only travels or reflect...
6 comments posted 19yrs
posted by mowhoong
6 comments posted 19yrs posted by mowhoong

Danfoss autopsy

Recently I dissected a danfoss variable speed a.c. moter drive. I found what looked like two transformers with only to...
13 comments posted 19yrs
posted by jpbrown
13 comments posted 19yrs posted by jpbrown

Toggle power with menbrane switch

Will this work to toggle power using a membrane switch? http://www.flickr.com/photos/7598811@N04/441030617/ To power up...
7 comments posted 19yrs
posted by none
7 comments posted 19yrs posted by none

Volt-amps BS

Some of these industrial ratings want to make me pull my hair out.....horsepower....volt/amps.....I've never bothered t...
16 comments posted 19yrs
posted by newszz10
16 comments posted 19yrs posted by newszz10

Issues with my monitor

I bought a new monitor and all worked after I blew the inside of my computer out with a dustbuster, as it was LOADED wi...
2 comments posted 19yrs
posted by john.doggett
2 comments posted 19yrs posted by john.doggett

OrCAD/PSPICE

Hi.. Please tell if anybody knows something about PSPICE/OrCAD . How to get it (free) & to use it.. I would be extremely...
4 comments posted 19yrs
posted by jaikorpal
4 comments posted 19yrs posted by jaikorpal