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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Nice catch posted by kurt s on September 18, 2009 at 12:11:44:
Why use doublers? so you can use old scope transformers to power tube amps of course!"Of course there are two kinds of doublers as I think you know: full wave and half wave. Full wave doublers keeps the DC rectified voltage fed with each phase. This is not too far off from full wave center-tapped rectification."
Not too far off indeed, assuming cap input (choke input is different). By tuning the capacitor values, you can get the same ripple, regulation, and response time out of each (given the same transformer and inductor) as shown above. Series windings with FWB and parallel windings with the doubler are nearly identical. Nearly identical peak charging current per winding of about 750mA also.
Edits: 09/18/09
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Follow Ups
- RE: Nice catch - Michael Koster 14:27:12 09/18/09 (4)
- RE: Nice catch - PakProtector 15:33:45 09/18/09 (3)
- RE: Nice catch - Michael Koster 15:54:31 09/18/09 (2)
- Choke-Input - Triode_Kingdom 10:11:07 09/21/09 (0)
- Excellent analysis! nt - kurt s 17:06:35 09/18/09 (0)
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