Power Supply TO220 vs TO3?

[Robert Donker]

With this much work on the line I'd go to a discrete power supply w/ crowbar
to provide ovp. Don't mess with this unless you're "very" into PS design.



I have about this much on a Serge system and use three discrete supplies
(one for each panel).



You might also put a current meter in-line with a couple modules and get a
better idea of auctual loads, I've seen from 50 to 550 ma / mod.



> Design and planning 

> continues for my modular (mostly based on EFM's stuff).

> 

> An engineer friend dropped by and said my +/-12v PS design 

> would simply 

> catch fire because I'd used TO220 7812 & 7912 regulators 

> instead of going 

> with TO3 packages.

> 

> Should I be concerned?  What would the expected current draw 

> be from (let's 

> say) 18 modules of the VCA5b and deg2a sort?  Can I get away 

> with TO220's or 

> do I need to do a (third) redesign using TO3's?

> 

> dave

> 

> ______________________________________________________________

> ___________

> Get Your Private, Free E-mail from MSN Hotmail at 

http://www.hotmail.com.



Share information about yourself, create your own public profile at 

http://profiles.msn.com.