Tube DIY Asylum

Posted by Ray Moth (A) on May 06, 2007 at 02:04:20

In Reply to: Re: Low Hy? How about no Hy? posted by Eli Duttman on May 5, 2007 at 20:29:11:

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.