Hobby Electronics Basics

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What would you call this?

I am in need of a solid state relay that latches upon reception of a positive-going pulse, and holds that state until t...
20 comments posted 18yrs
posted by db5151
20 comments posted 18yrs posted by db5151

understanding car amplifiers and bridging

If one has a 4-ohm speaker and a car battery that puts out 12.6V, an amplifier can produce: P = V^2/R = (12.6V)^2 / 4 =...
4 comments posted 18yrs
posted by mrdarrett
4 comments posted 18yrs posted by mrdarrett

Is this legal?

This is a pic from an app-note from Microchip. http://i29.tinypic.com/5b193d.png They are using a fuse between the neut...
29 comments posted 18yrs
posted by spamme
29 comments posted 18yrs posted by spamme

Science project ideas

My son wants to enter the 4th grade science fair and wants to do something with electronics. As with most science fairs...
6 comments posted 18yrs
posted by jsalzman
6 comments posted 18yrs posted by jsalzman

Regen Radio Ideas Needed

I've been looking on the internet for regenerative radio plans, but haven't found any I like. I was hoping someone here...
24 comments posted 18yrs
posted by the1930s
24 comments posted 18yrs posted by the1930s

Furnace Electronic Air Cleaner

I have an electronic air cleaner on my furnace circa 1971, that doesn't work. When you turn it on - nothing happens. I...
1 comments posted 18yrs
posted by travelover48167
1 comments posted 18yrs posted by travelover48167

Is it safe ?

I dismantled a fuel sensor from the petrol tank in my boat. To my surprise, the sensor made up of a roll of bare resist...
4 comments posted 18yrs
posted by mowhoong
4 comments posted 18yrs posted by mowhoong

Float switch circuitry without floats?

I know very little about electronics though I'm fairly handy and have experimented with some simple circuitry. My objec...
13 comments posted 18yrs
posted by cujo
13 comments posted 18yrs posted by cujo

Why is a Theremin volume antenna a loop?

Does anyone know why the volume antenna on a Theremin is nearly always a loop? Wouldn't a horizontal straight bar work a...
1 comments posted 18yrs
posted by kasterborus
1 comments posted 18yrs posted by kasterborus

load pull with line stretcher

Hi, I am new to circuit design and I would like to do load pull with a VCO. I have a line stretcher. With the line stre...
0 comments posted 18yrs
posted by feilip
0 comments posted 18yrs posted by feilip

looking for a timer circuit

I need a circuit that will read an input voltage once every second, and output that same voltage on the output side unt...
10 comments posted 18yrs
posted by waynelewis
10 comments posted 18yrs posted by waynelewis

Charge amplifier

Hello All, My name is Ahmad. i Am looking to have a charge amplifier chip which contains more than 2 charge amplifiers....
1 comments posted 18yrs
posted by daqamseh2002
1 comments posted 18yrs posted by daqamseh2002

quality circuit board components

Circuit Components Inc. manufactures custom designed bus bars and board stiffeners. Visit us at www.cci-msc.com
2 comments posted 18yrs
posted by hbrecke
2 comments posted 18yrs posted by hbrecke

Will this AC/DC converter adapter work?

I am interested in purchasing an air compressor to inflate my tires, such as this one: http://www.amazon.com/gp/product...
3 comments posted 18yrs
posted by void.no.spam.com
3 comments posted 18yrs posted by void.no.spam.com