[R-390] in rush current limiters

Sun, 22 Dec 2002 21:31:28 -0600 (CST)

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On Sun, 22 Dec 2002 20:38:24 -0500 (Eastern Standard Time), Helmut
Usbeck wrote:

>Put a diode (1N4007 will do)  between pins 2 and 7.  No muss, no fuss, no
>heat.  YOu now have 12 vac for the two 6 volt tubes to fight over.

Oh, I get it now.  Half-wave rectify the filament voltage to accomplish
a reduction in the average voltage.  Average value of a half-wave
output is .318 of peak, according to my reference.  Doing the math, 25
VAC RMS into the rectifier would give 11.21 volts.  Close enough.

What about rectifier hash?

- --
Jim Shorney      -->.<--Put complaints in this box
[email protected]
[email protected]
Ham Radio NU0C
Lincoln, NE, USA
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http://incolor.inetnebr.com/jshorney/
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