Hobby Electronics Basics

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How to Calculate an AC Watt?

Hi, This design says it uses 6V min and 400mA max. It says it outputs 1-2 watts. Can anyone tell me how they calculated...
17 comments posted 20yrs
posted by Rcvr
17 comments posted 20yrs posted by Rcvr

conducted EMI measurement

for conducted emi measurement, does the power suppplied for the spectrum analyzer/reciever should be from a isolated su...
0 comments posted 20yrs
posted by krishmaniac
0 comments posted 20yrs posted by krishmaniac

Impedance

Does a capacitor in an AC circuit heat up as would a resistor offering an equivalent resistance? R
6 comments posted 20yrs
posted by dewhurst
6 comments posted 20yrs posted by dewhurst

Amplify clock signal?

I bought some ECS -100 i MHz clock oscillators to use as an external clock to set a cutoff frequency in a Maxim lowpass...
3 comments posted 20yrs
posted by amanderr
3 comments posted 20yrs posted by amanderr

Power supply 3

Hi, Automatic shut off. I was considering two method for an automatic shut off of a battery charger. I was looking atth...
8 comments posted 20yrs
posted by lera
8 comments posted 20yrs posted by lera

1 phase - use a starter?

Application is a 40s Craftsman belt-drive table saw upon which I have just recently completed a "rebuild" - complete di...
0 comments posted 20yrs
posted by WestCoastJagLTD
0 comments posted 20yrs posted by WestCoastJagLTD

TV signal line converter

Hi all, I'm looking to convert UK TV signal resolution down from 625 lines to 32 lines. Does anyone know of some off the...
5 comments posted 20yrs
posted by andrew.whitelaw
5 comments posted 20yrs posted by andrew.whitelaw

Help Identifying three IC's

Hi All, Is there a machine which you can plug in a 16 pin IC and it will tell you what it is/number is? I have a circui...
19 comments posted 20yrs
posted by timharris01
19 comments posted 20yrs posted by timharris01

A/D for end of charge detection for NIMHs & NICADs

Is a 10bit A/D be adequate for detecting the end charge condition for NIMH & NICAD battery packs? Mike ----------------...
32 comments posted 20yrs
posted by nomtrxspam
32 comments posted 20yrs posted by nomtrxspam

small current

I'm trying to measure some small current (probably 25 mA) using a Fluke 75 Series II multimeter. I have the black probe...
4 comments posted 20yrs
posted by mike7411
4 comments posted 20yrs posted by mike7411

question using the op482?

Hi, i have a square signal, with positive at 15V, and negative with -15V, and i will like to convert this signal so tha...
1 comments posted 20yrs
posted by overgeo
1 comments posted 20yrs posted by overgeo

A portable 220 volt recepticle

There was a past letter on Goggle regarding one's idea of making a 220 volt portable recepticle. Single phase yet this...
3 comments posted 20yrs
posted by ludfisk
3 comments posted 20yrs posted by ludfisk