[time-nuts] Thunderbolt - any negatives ?

[SAIDJACK at aol.com]

Hi Robert,
 
very good point, one more issue is the number of components  used.
 
On switchers, this is easily 10x to 15x the number of components  used on a 
simple linear supply.
 
Every component and it's solder-joints are a statistical sources of  
failure.
 
bye,
Said
 
 
In a message dated 6/1/2009 12:46:36 Pacific Daylight Time,  
robert8rpi at yahoo.co.uk writes:


Most  switch mode power supplies actually run a voltage doubler on the 
input when  running on 110V. This puts over 300V across the transformer and 
switch. Also  the regulation loop crosses the isolation barrier introducing more 
failure  points that can result in overvoltage.

Robert  G8RPI.