Hobby Electronics Basics

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Transformer

I am preparing Audio amp using, TBA810, this PCB require 12-0-12 V and 1-Amp Transformer, I have purchased 2-Amp 12-0-1...
3 comments posted 20yrs
posted by wazdesign
3 comments posted 20yrs posted by wazdesign

Question regarding the photodiode model

Question regarding the photodiode model. Just to clarify in my mind, if a photodiode has no biasing voltage across it,...
1 comments posted 20yrs
posted by charlesg77
1 comments posted 20yrs posted by charlesg77

What is Continuous Audio?

In this spec sheet: http://www.cde.com/mpdf/wwaudio.pdf , I dont get the 15W of Continuous Audio. Does it mean the power...
4 comments posted 20yrs
posted by quanghoc
4 comments posted 20yrs posted by quanghoc

Adjustable Carbon Attenuator

I looked at this Attenuator: http://www.vishay.com/docs/32025/m2001h.pdf And there are some specification I don't under...
6 comments posted 20yrs
posted by quanghoc
6 comments posted 20yrs posted by quanghoc

Will this DC motor control work?

Greetings All, I have been trying all sorts of designs out in my head for controlling wire feed speed. The goal is to h...
3 comments posted 20yrs
posted by etpm
3 comments posted 20yrs posted by etpm

pls help me identify this chip

its an smt small chip with 28 pins , it has the microchip logo (M) , it has to serial numbers on it the first is : GAA3...
0 comments posted 20yrs
posted by elrefaie
0 comments posted 20yrs posted by elrefaie

BALUN transformer for capacitive loads

Hi, I need to drive 2 capacitive electrodes with out of phase RF (0-100 Vp-p, 10KHz - 1MHz). For this purpose i got mys...
18 comments posted 20yrs
posted by archiees
18 comments posted 20yrs posted by archiees

Self-Resonant Frequency and Resonant Frequency

I searched both terms on Wiki http://en.wikipedia.org/wiki/Self-Resonant_Frequency and http://en.wikipedia.org/wiki/Res...
7 comments posted 20yrs
posted by quanghoc
7 comments posted 20yrs posted by quanghoc

Will a Gas Operated Generator Work?

Concerning the use of the macerator, would a gas-powered generator work? There is a receptacle for 12 VDC, and on the b...
2 comments posted 20yrs
posted by mea305
2 comments posted 20yrs posted by mea305

240V relay contact suppression

Hi I'm using a relay with 240VAC coil and 240VAC contacts. From what I've been advised before with relays (not 240VAC),...
11 comments posted 20yrs
posted by mmcnospam
11 comments posted 20yrs posted by mmcnospam

Scooter Batteries: Revisited

Just to keep things separate, I would like to pose this question concerning my scooter. I have a "Three-Step," 12VDC, 4...
1 comments posted 20yrs
posted by mea305
1 comments posted 20yrs posted by mea305

transistor help

Hello, I have a home irrigation controller hat has gone faulty on one of the zones, I have opened it up and have found...
2 comments posted 20yrs
posted by messenger_boy_2005
2 comments posted 20yrs posted by messenger_boy_2005

Perf board types

Hiya, I've been looking at different types of perf boards, for use with small/medium sized projects, but it seems most...
3 comments posted 20yrs
posted by fyberoptic
3 comments posted 20yrs posted by fyberoptic