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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: Re: Whatever happend to center tapped chokes?? posted by fatbottle on June 18, 2002 at 02:34:32:
it works quite nicely.... give it a try what do you have to lose???as ken said, just remember that the max AC they will like to see assuming perfect DC balance is 120V @ 60hz, which is 60V @ 30hz, 30V @15hz so i would keep this to low level stages to begin with.... the work up in voltage....
if there is a little DC imbalance between the 1/2's then you will reduce the max AC available before saturation.
i find a 25 ohm ww pot between the cathodes of a pair of 6C45's with the wiper connected to a choke with the proper DCR to bias the tube works very well in this situation.
a simple 20hz sinewave and a voltage meter will allow you to adjust the pot for max output which should happen at perfect balance...
a scope will quickly tell you when the choke is saturating... you start seeing a "kink" in the sinewave near the zero crossing.
dave
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Follow Ups
- Re: Whatever happend to center tapped chokes?? - dave slagle 07:40:01 06/18/02 (2)
- Re: Whatever happend to center tapped chokes?? - fatbottle 15:38:24 06/18/02 (1)
- Re: Whatever happend to center tapped chokes?? - dave slagle 07:49:15 06/19/02 (0)
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