[Amps] Filtering capacitor in a HV PS: How low can you get

[George]

Interesting  information Will,   Can you tell me what C is typical for a
choke input?

Geo W7LFD

|Behalf Of Will Matney
|Sent: Tuesday, August 17, 2004 3:37 AM
|To: amps at contesting.com
|Subject: [Amps] Filtering capacitor in a HV PS: How low can you get
||Angel,
|About 20 to 25 uF is about a minimum used by all amp manufacturers on
|the B+ supply. Most circuits are at least sized X2 when considering the
|voltage. However, I've seen a bunch by manufacturers such as Alpha, QRO,
|etc use Qty. (8) 220 uF @ 450V in series giving a 27.5 uF @ 3600 Vdc
|rating. This is on a 2500 Vdc supply. I have also seen some use just
|slightly over the B+ voltage in lower voltage amps around 900-1500 Vdc
|range, maybe 100 to 450 Vdc over.
<SNIP>