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Re: [Amps] HF2500 Power Supply Caps

To: "Steve" <g8gsq72@gmail.com>, <amps@contesting.com>
Subject: Re: [Amps] HF2500 Power Supply Caps
From: "Carl" <km1h@jeremy.mv.com>
Date: Mon, 7 Apr 2014 13:58:22 -0400
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Insane cap values are not for commercial ham amps, 8 470uF is about a good limit that allows a reasonable size glitch resistor of 20-25 Ohms 25W but should use a step start. 330uF is safer without a step start.

Carl
KM1H



----- Original Message ----- From: "Steve" <g8gsq72@gmail.com>
To: <amps@contesting.com>
Sent: Monday, April 07, 2014 10:54 AM
Subject: Re: [Amps] HF2500 Power Supply Caps


Make sure your transformer is up to it - big caps can mean higher peak currents and more I^2xR in the windings.

Steve


## 600-1000uf caps cost very little these days..so why cheap out ? Caps are
cheap on the surplus market as well.
IMO, 1% ripple is the minimum that you should be aiming for in a HV supply.
 That implies 600 uf caps vs 200 uf caps.
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