[R-390] Re: R-390 Voltage Regulator

Flowertime01 at wmconnect.com Flowertime01 at wmconnect.com
Sat Mar 26 20:07:22 EST 2005


From:    drewmaster813 at hotmail.com (Drew Papanek)

For a voltage reference more in keeping with the theme use a few neon bulbs 
in series to replace the zeners.  The parallel capacitance would have to be 
kept low to prevent relaxation oscillations.  NE-2's would be run at about 
half a milliamp.  Pretty to look at.

Drew,

I really like the Idea of some NE-2 as a reference source.

The series pass transistor would be isolated from ground and the heat sinks.
So the stressing voltage is just what ever the difference is between input 
and out put 
voltage. I thought the 2N3055 would handle 60 or so volts. Do the 6082s drop 
more than that across them? My manual is not at hand and I do not know the 
real voltages.

You are really right there are much better devices than the 2N3055.

Thanks for the input

Roger KC6TRU


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