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Re: [Amps] Re: Step-start calculation

To: "Joe Subich, K4IK" <k4ik@subich.com>
Subject: Re: [Amps] Re: Step-start calculation
From: jeff millar <wa1hco@adelphia.net>
Date: Sat, 20 Nov 2004 16:11:11 -0500
List-post: <mailto:amps@contesting.com>
Ok...re-running for full wave doubler
Vout = 9010V with bleeders
Vout = 7615 to 7395V at 4K load (220V ripple)
Ipk turnon = 58 Amps

Still a nice power supply

Joe Subich, K4IK wrote:



Thanks for the numbers, its educational. The program assumes mains resistance of zero. Since you know the value, it adds to primary winding resistance.

Results at 240V in, 2.2M RL, parallel 2 x 93 uFd= 186 uFD
   Vout = 4435V
   Ipk turnon = 70A

Loading the output (knowing what you like to run)
RL = 2K Vout = 4050 to 3985V (65V ripple)
RL=1.5K Vout = 3960 to 3878V (82V ripple)
That's a nice supply.



Problem is the rectifier is a Full Wave Doubler - not a Full Wave Bridge. Effective capacitance is 93/2 = 46.5 uF.


73,

... Joe, K4IK






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