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In Reply to: True, but it's conceptually simpler than a multicomponent solid state delay circuit.. :-) nt posted by JimL on August 9, 2006 at 17:56:36:
. . . and that's a hybrid bridge. Instead of an all-SS bridge, the best arrangement IMHO is to use TV damper diode tubes in the positive half of the bridge and ultra-fast recovery SS diodes in the negative half.I would have used the hybrid bridge arrangement if I'd had a bit more voltage to spare. It offers more than just the slow start you get from using a thermionic diode as a delay. You also get elimination of hash from the SS diodes (reputedly, anyway; I did try it and it sounded all right but I must admit I didn't actually test for hash).
I really think his is the way to go, with an non-centre-tapped HT secondary winding, unless you can't accommodate the space that a pair of damper diodes will occupy, can't supply the considerable heater current they will consume or absolutley have to have the extremely low forward resistance of an all-SS diode bridge.
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Follow Ups
- I'll tell you what else is conceptually simpler than a multicomponent solid state delay circuit . . . - Ray Moth 19:11:59 08/11/06 (2)
- Hmm, interesting concept - if you need a bridge. nt - JimL 10:11:51 08/12/06 (1)
- Yes, I guess I'm a bit OT here, sorry! (nt) - Ray Moth 16:59:53 08/12/06 (0)
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