Hobby Electronics Basics

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Aluminum Tape

Hi. I recently had to purchase a roll of Aluminum Chimney Tape to fix a hot water heater exhaust. All in all, I needed...
2 comments posted 19yrs
posted by blahbleh666
2 comments posted 19yrs posted by blahbleh666

Ultrasound advertising beamed to shoppers

Seems this idea was discussed by the group recently with the conclusion that it was unlikely to work. Apparently, it is...
1 comments posted 19yrs
posted by no.spam
1 comments posted 19yrs posted by no.spam

Interference with OP circuits

I am working with a LED and Photodiode detector circuit. Im concerned that I am getting electricial intererence. The dr...
0 comments posted 19yrs
posted by graeme.cunningham
0 comments posted 19yrs posted by graeme.cunningham

Long Range Remote Control

Hi all, a friend has asked me for advice to remotely control access to his Farm. the Gate is 2km from the house, he wan...
3 comments posted 19yrs
posted by robert.zeilinga
3 comments posted 19yrs posted by robert.zeilinga

current common in series

What is the subtle distinction between stating current is /constant/ in series and current is /common/ in series? -- con...
3 comments posted 19yrs
posted by conrad
3 comments posted 19yrs posted by conrad

inductive reactance

With inductive reactance, the phase shift that is induced where voltage leads current by 90 degrees or pi/2 radians, is...
5 comments posted 19yrs
posted by conrad
5 comments posted 19yrs posted by conrad

comparing CS and Cascode frequency response

hi all, I calculated the frequency response of the CS and Cascode amplifiers using the time constants method. Here they...
21 comments posted 19yrs
posted by bassi.matteo
21 comments posted 19yrs posted by bassi.matteo

TV Channel Filter Removal - good reason

Hey guys, here's my situation. I called Cox today and upgraded my cable TV to the premium service, which includes all o...
8 comments posted 19yrs
posted by swebster87
8 comments posted 19yrs posted by swebster87

getting started with uProcesors

Hey all; I've been noticing a few posts here and there that refer to PICs and other uProcessors, and was thinking about...
6 comments posted 19yrs
posted by toccata
6 comments posted 19yrs posted by toccata

Capacitor advice

Hi, I'm making a circuit where 100n metal film capacitors are listed as required. This was the nearest I could find on...
19 comments posted 19yrs
posted by downlode
19 comments posted 19yrs posted by downlode

400 Hz thanks

Thanks to everyone who responded to my 400 Hz questions. The answers were much more than I expected and very enlightenin...
1 comments posted 19yrs
posted by etpm
1 comments posted 19yrs posted by etpm

Simple electret "pre-amp"

I am using a Logitech/Labtech USB microphone which is doing an okay job but could benefit from some more gain. I don't...
2 comments posted 19yrs
posted by grubertm
2 comments posted 19yrs posted by grubertm

Power Button

Hi all, I am making a battery powered device that uses a Single board computer running Linux. The problem is that becau...
8 comments posted 19yrs
posted by kitmor
8 comments posted 19yrs posted by kitmor

How do I programmatically send signals to USB?

Hello How do I control voltages to pins of the USB programmatically? For example, I'd like to say send a signal to indi...
6 comments posted 19yrs
posted by unisonharmonics
6 comments posted 19yrs posted by unisonharmonics