Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: Circuits for Dummies



At 08:04 AM 2/14/02, you wrote:
Hi
Does anyone know a good basic electronics reference book? I need so=
me more background info on electronic circuits.

I also need some more practical practice. I can do the theory but watchin
me wire one of these things is distressing.

Tina

Tina Fanetti

When I was a kid, I had a science kit with a battery, some wire and a
trembler bell,
a light bulb holder and several small bulbs.
Before long, I was wiring up commutator motors stripped from vacuum
cleaners.

On one memorable occasion, I wanted to step down the house supply for some
low voltage component - and I worked out the appropriate resistance which
would drop the
necessary volts. It might have been a supply for a 12 volt one amp device.
I set up the appropriate resistance on an audio taper potentiometer, but I
was quite surprised when I switched the mains supply on though this dropper.
It disassembled in smoke with a startling blue flash.

It was about then that I found that a desired resistance value is not
enough of a specification - sometimes the power dissipation rating matters too.


Brian Whatcott
Altus OK Eureka!