Hobby Electronics Basics

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Coiling a motor

Hello everyone, I recently bought a 1/4hp motor that i want to recoil differently. The rotor contains four electro magn...
20 comments posted 19yrs
posted by lerameur
20 comments posted 19yrs posted by lerameur

Will too many amps fry my computer?

Hi, I just bought a replacement AC power adapter and the amps are slightly higher than the original (3.4 versus 3.16)....
6 comments posted 19yrs
posted by xilabow
6 comments posted 19yrs posted by xilabow

input impedance output impedance

I'm a newcomer to analog electronics. Currently, what I'm studying is Op-amp circuits. The term I'm confused about is I...
13 comments posted 19yrs
posted by sperelat
13 comments posted 19yrs posted by sperelat

Selectivity (Series Circuits) pointer

Hi, does anyone know of a good online treatment of formula & derivations of formula for Selectivity (esp Series Circuit...
2 comments posted 19yrs
posted by myDublinAddress
2 comments posted 19yrs posted by myDublinAddress

IR USB device (Igor scheme) problem

Hi! I've decided to build an IR USB device, based on Igor Cesko's schematics http://www.cesko.host.sk/IgorPlugUSB/IgorP...
2 comments posted 19yrs
posted by gesaugen
2 comments posted 19yrs posted by gesaugen

basic transistor action

Hi....My name is sunil and im doing my electronics engineering in India. I have a minor query in the basics of transist...
5 comments posted 19yrs
posted by strider014
5 comments posted 19yrs posted by strider014

Scale Model electric train - motor control

My uncle has a 7 1/2" guage train track. He currently has 1 gas and 1 steam engine. We would like to make an electric t...
3 comments posted 19yrs
posted by echinos
3 comments posted 19yrs posted by echinos

problem needing sugestions

any ideas on how to transmit from small speaker on gps device to a head inside a motorbike helmet can not hear gps inst...
4 comments posted 19yrs
posted by haggisz
4 comments posted 19yrs posted by haggisz

how op amp differntial input is zero?

how op amp differntial input is zero? i need basic explanation(how input impedence high?)
2 comments posted 19yrs
posted by munishwaran.m
2 comments posted 19yrs posted by munishwaran.m

Solder Station Recommendations?

I used to have an Edsyn solder station that I bought from Radio Shack about 5 or 6 years ago for around $50.00. It got...
26 comments posted 19yrs
posted by none
26 comments posted 19yrs posted by none

Storing Alkaline Button Cells

I got ahold of a few LED keychains that each have two 1.5V button cells. My guess is that they are alkaline. I want to...
1 comments posted 19yrs
posted by none
1 comments posted 19yrs posted by none

Using a solder pot

I read a great post about using a solder pot, but had a question. I have a board that requires two components to be pla...
1 comments posted 19yrs
posted by mperline
1 comments posted 19yrs posted by mperline

555 monostable setup

Hi group, I encountered a problem when trying to trigger a monostable using 555 chip. My circuit is as follow. VCC VCC...
11 comments posted 19yrs
posted by allenbsf6502
11 comments posted 19yrs posted by allenbsf6502