previous: Charlie Re: Power supply cap values and how they effect tone? -- 5/24/2000 3:53 AM

Charlie: Big Cap = Bye Bye Tube Rectifier

5/24/2000 6:48 AM

Gil Ayan

Charlie: Big Cap = Bye Bye Tube Rectifier quote: "I have heard this before, but donot understand why it is a bad idea to use a large amount of filtering with a tube rectifier?     Charlie   "     And the reason is: a large cap represents a lower impedance to anything but DC. So when the rectifier tube tries to charge the cap, it's almost like a short and it may see more current than it can handle. A smaller cap would raise that impedance and slow things down some...     Maximum recommended values, as per the tube specs, are like 40-60uF maximum, depending on the rectifier tube (GZ34 = 40 and 5U4 = 60uF, I believe).     Gil

 

Replies:

Stephen Conner Bigger caps mean higher peak chargi... -- 5/25/2000 11:22 AM