[Amps] Peter Dahl transformers

Bill Turner dezrat1242 at yahoo.com
Tue Feb 19 19:49:44 EST 2013


ORIGINAL MESSAGE: 
On Sat, 16 Feb 2013 00:59:39 +0000, Manfred wrote:

>I would say that intelligent design is to get rid of big, heavy, 
>expensive power transformers, and instead use switching power supplies. 
>They are FAR more complex, sure, but they cost far less, weigh one tenth 
>as much, provide tightly regulated output voltage, and short circuit 
>protection.

REPLY: 
I recall a saying from the early days of switching power supplies:

"A switching power supply is always one microsecond ahead of disaster".

Pig iron, properly run, lasts forever. Everything is a tradeoff. 

Bill, W6WRT


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