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Old 7th July 2003, 12:26 AM   #1
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Default Power supply help

Can anyone tell me what I will end up with voltage wise if I use a 300-0-300 100MA transformer, a 6X4 rectifier, 20H choke, 50mfd cap, 20H choke, and a 50mfd cap?

Thanks in advance

Joe
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Old 7th July 2003, 12:32 AM   #2
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Hey-Hey!!!,
With no load yo will still get root2 times the unloaded RMS ac voltage. I suggest a run through the Duncanamps PSUDII, power suply design software for a good answer.

Choke input will start you with .9x rms value. the DCR fo the choke will drop this further, and so wil the 6X5. This assumes the load draws more that critical current through the choke.
regards,
Douglas
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Old 7th July 2003, 12:44 AM   #3
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Will I end up with about 230V B+ ?
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Old 7th July 2003, 01:29 AM   #4
Colt45 is offline Colt45  Serbia
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depends on the DCR of the L's, and the load..
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Old 7th July 2003, 02:49 AM   #5
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The chokes are 595 ohms each. The load will be a 5687 tube.
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Old 7th July 2003, 02:35 PM   #6
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Assuming a 14mA load you will get 242,6 volts dc as calculated with PSU2 designer.
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