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Vintage threads from the first ten years
| previous: Tracy Lion |
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Re: Dropping B+ problem!
 2/13/2000 4:25 PM |
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lion | Re: Dropping B+ problem! Thanks for the replies! Ken! >lion, are you telling me you got MORE voltage out of your power supply with the x-istor and zener in place??? that would be a neat trick, i must say...< Your are right that would really be something! But I’ll have to disapoint you  I made a mistake (again!)
The thing is, that it turned out that the PT in this amp has 2 (two) taps grounded??? I haven’t noticed that before wiring in the zener and the transistor. Moving the zener and the transistor to the other tap did the trick – the voltage dropped. So, just to make sure that I wasn’t kidding myself in the first place, I moved back to the first tap again , and – the voltage increased, approx. 50V! Is it normal to have two grounded taps on a PT? Tracy! I use a 30V zener a the drop is excactly 30V. Re-biased after the drop, of course! Regards Lion |
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| Replies: |
| Don Symes What would happen if you had wired ... -- 2/13/2000 9:12 PM Bruce You might have accidentaly grounded... -- 2/14/2000 8:29 AM |