[AMRadio] PW Supply

[John Coleman ARS WA5BXO]

It may be the only path to ground for the power supply and measuring the
voltage across it may be the way to measure current from the power supply.

A 10 ohm resistor with 1 volt measure across it represents 100ma current.
This is common practice for the way I measure power supply current.

BTW I found this really neat site with some good info on power supplies
http://www.qsl.net/i0jx/supply.html
Hats off to Tony, I0JX

John, WA5BXO

-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf Of Jack Schmidling
Sent: Saturday, December 02, 2006 7:12 PM
To: Discussion of AM Radio in the Amateur Service
Subject: [AMRadio] PW Supply


I am having some quality time with my new supply and have lots of 
questions about things I do not understand.

First one is, this is a choke input with a pair of 4mf's across the 
output of the choke and a monster 100k bleeder.

What bothers me is that there is a 10 ohm, many watt resistor between 
the negative side of the caps and ground.

What is this for?

js


-- 
PHOTO OF THE WEEK: http://schmidling.com/pow.htm
Astronomy, Beer, Cheese, Fiber,Gems, Sausage,Silver http://schmidling.com

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