[Milsurplus] P/S Filter

[B. Smith]

Pete

"Download Power Supply Designer" by Duncan Amplification,(free) and you can 
try out different filter configurations for the ART-13 high voltage power 
supply. I personally just use a bridge rectifier and a capacitor input of 25 
uF on the 1200 volt HV side and use a well filtered low voltage  and let er 
rip. Where do you find a 25 uF cap? Ans: use  4  100 uf in series with 
resistors. etc
See:
http://www.duncanamps.com/psud2/index.html



----- Original Message ----- 
From: "Pete Williams" <jupete at bigpond.net.au>
To: <milsurplus at mailman.qth.net>
Sent: Tuesday, December 11, 2007 11:13 PM
Subject: [Milsurplus] P/S Filter


|
|
| G;day... I'm in process of building a 1000V P/S for the ART-13 tx .
| Conventional wisdom and literature  shows choke input filtering.
| Since  suitable  component not  available and I'm not  able to get a
| suitable  item, what level of ripple might one expect if choke not used 
and
| how obvious would it be on a rx  Assume AM being used .
| The balance of the full wave supply has 8mfd capacitor  and  bleeder of 
80K
|
| Thanks for  any comment
| Pete VK 3IZ
| jupete at bigpond.net.au
|
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