Hobby Electronics Basics

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Cap Idnetification

I went to the store to get a .01u Capacitor 500v. They said they didnt have 500v but had 630v Ok Fine. But then when I...
2 comments posted 21yrs
posted by stacy
2 comments posted 21yrs posted by stacy

Regulating High Voltage

Hi, I'm trying to design a high voltage DC power supply, which will be used for charging up a capacitor. To start with...
18 comments posted 21yrs
posted by mike
18 comments posted 21yrs posted by mike

Radio Antennes

What is the reason ? the antenna of FM radio all way adjust to 45 degrees for better reception, whereas 90 degrees for A...
1 comments posted 21yrs
posted by mowhoong
1 comments posted 21yrs posted by mowhoong

Electronic Parts Site

Can someone tell me if there is a place on the net that is good to but electronic parts from? I'm looking at buying some...
3 comments posted 21yrs
posted by palmerhudson
3 comments posted 21yrs posted by palmerhudson

Driving 555 IC with a pulse stream

I have a decade counter (NTE4017B) that generates a pulse stream on each decoded output, a couple of which I will use....
17 comments posted 21yrs
posted by Jag_Man653R-E-MOVE
17 comments posted 21yrs posted by Jag_Man653R-E-MOVE

Sandwich Rectifiers ?

I am corious to know a 20A battery charger for commercial,it use sandwich rectifier, it make no sense as standard axial...
2 comments posted 21yrs
posted by mowhoong
2 comments posted 21yrs posted by mowhoong

What is 16(4)@250V OF A SWITCH ?

What does that mean? the specification mark on the toggle switch is 16(4)A@250V I do not know it mean for 16A or just 4A...
4 comments posted 21yrs
posted by mowhoong
4 comments posted 21yrs posted by mowhoong

Transformer Current

Hey Everyone I have a mains transformer which has several taps on the secondary coil. The primary coil runs off 240V an...
1 comments posted 21yrs
posted by mike
1 comments posted 21yrs posted by mike

Problems with NTE 4017B IC

I am implementing a circuit proposed by Chris in which a 555 IC feeds its output to a decade counter, 4017B IC. The out...
4 comments posted 22yrs
posted by Jag_Man653R-E-MOVE
4 comments posted 22yrs posted by Jag_Man653R-E-MOVE

Will this kind of electrical generator work?

Here is a copy of the writing that I originally posted "Science Hobbyist - General Science Forum" (www.amasci.com). ***...
4 comments posted 22yrs
posted by antti.hyvari
4 comments posted 22yrs posted by antti.hyvari

LED's and AC

Need some help please. 12v 5mm LED, what size cap and resister do I need to use with a 230V AC supply. Thanks. john.
1 comments posted 22yrs
posted by Reeferjon
1 comments posted 22yrs posted by Reeferjon

mho conductance

When is the unit of the mho used in practical applications ??? I know what a mho is but I have never seen any real worl...
2 comments posted 22yrs
posted by cornytheclown
2 comments posted 22yrs posted by cornytheclown

Fuse as low-value resistor

Many years ago, it was not uncommon to see fuses in the emitters of power amp output stages. I recall an instructor exp...
0 comments posted 22yrs
posted by NoSpam
0 comments posted 22yrs posted by NoSpam

Glue or varnish for air coil windings?

I want to glue or varnish the windings of an air coil. The coil is made of coated (polyurethan) copper wire. Which is th...
2 comments posted 22yrs
posted by w.p.m.heijnen
2 comments posted 22yrs posted by w.p.m.heijnen