Tube DIY Asylum

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Re: Low Hy? How about no Hy?

Posted by Ray Moth on May 6, 2007 at 02:04:20:
Yes, Eli, I must admit that I prefer a fairly small smoothing cap (directly following the rectifier) and a much larger reservoir cap (after the filter). I'm talking about 50uF and 470uF respectively. Also, I would prefer to ramp up the voltage slowly by using a high value resistor, between the reference zeners and the MOSFET gate, to charge up a cap from the gate to ground, rather than the delay relay in Satoru-san's design. 2.2Meg and 2uF should do it.