Hobby Electronics Basics

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LED help

hey if this posted twice sorry had a problem but i build modle cars for a hobby and was wondering what i would need and...
2 comments posted 21yrs
posted by hall_hair
2 comments posted 21yrs posted by hall_hair

Diode with very low reverse leakage current?

What's a good diode (preferably some jelly bean part) to use when one needs an extremely low reverse leakage current? T...
11 comments posted 21yrs
posted by smpowell55
11 comments posted 21yrs posted by smpowell55

Bonding from a different circuit

Hi. I have a house wiring question. I have noticed that there's an old 2 wire with no bare copper bonding(?) in a ceili...
6 comments posted 21yrs
posted by yaleh.paxton.harding
6 comments posted 21yrs posted by yaleh.paxton.harding

Current swing in bridge amp

Can someone please confirm or modify the following, given a bridged audio amp outputting a sinewave to an inductive loa...
5 comments posted 21yrs
posted by timshannon
5 comments posted 21yrs posted by timshannon

Why fuse in computer power cables(leads)

In India power leads for computers do not have any fuse in them, 5amp or 13amp. Do not know about USA but in UK these l...
12 comments posted 21yrs
posted by nagesh_pandher
12 comments posted 21yrs posted by nagesh_pandher

200 M ohm resistor ?

I notic a 200M ohm resistor was connected to the axia of the rubber platen of the high speed printer. I belive the purp...
2 comments posted 21yrs
posted by mowhoong
2 comments posted 21yrs posted by mowhoong

MOSFET/circuit troubleshotting :-\

Things just aren't going that well *sigh* :( I've got a simple circuit with an IC controlling a motor via a MOSFET. The...
63 comments posted 21yrs
posted by danny
63 comments posted 21yrs posted by danny

How to install a big condenser?

I have this small compressor that I use with an airbrush. Its a medical surplus of some kind. Its somewhat round with a...
1 comments posted 21yrs
posted by robgagnon1
1 comments posted 21yrs posted by robgagnon1

PICs and Weak pull-ups

As I understood, weak pull-ups meant unconnected input pins would read as 1... It's taken me nearly 8 hours to figure o...
3 comments posted 21yrs
posted by danny
3 comments posted 21yrs posted by danny

Kinks and Maxwell's Equations--EM Wave Radiation

In some more advanced physics books, the idea of how waves form and detach from an oscillating electric dipole is shown...
0 comments posted 21yrs
posted by wolf_tracks
0 comments posted 21yrs posted by wolf_tracks

Temic semiconductor

Hi, Why I cannot find Temic Semiconductor Homepage by search engines? Thanks!
2 comments posted 21yrs
posted by dereklai2k
2 comments posted 21yrs posted by dereklai2k

Building a serial remote

I'm trying to build a remote control that works over serial. I've never tried anything like this before so I don't know...
1 comments posted 21yrs
posted by darren.wardle50NOSPAM
1 comments posted 21yrs posted by darren.wardle50NOSPAM

lights

If ive got two small lights, both 1.5v each, does that mean i need 3v to power them both? Are there different ways I can...
1 comments posted 21yrs
posted by fiveskin
1 comments posted 21yrs posted by fiveskin

simple beginer question on amps

Hi everyone, As you can see, Ive purchased a very cheap multimetre. Can anyone tell me how to measure amps using this t...
1 comments posted 21yrs
posted by fiveskin
1 comments posted 21yrs posted by fiveskin