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Re: Question and an interesting site for those that modify CDV700s and more.


Roger Whatley
 

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very kewl!

Sorry I have been unresponsive this evening, been visiting with an old hunting buddy.

rogerw


On 4/4/2022 10:33 PM, peter via groups.io wrote:
Roger:
?back to the circuit you posted in message #300
Simple cascode, with only 1 npn tr + 2 mosfets.
Since I found the 2SK3265, I removed the 2nd mosfet so its very basic circuit.
66Meg, two 1 Meg, 100k+ 2.2M trimmer , 5.1V zener, 2SK3265, 2SC3311
Set trimmer for 900V, Vary input from 950~ 1150, output only varied 5V or less.
Heated the circuit with a hair dryer, got it up from 25C to about 60C, voltage rose may be 5 or 6 volts. Good enough for me!
Time to make it small enough to stuff inside my CDV-700 !
It on the LHS of the attached jpg, circuit in message #300 is on the RHS
P
-- 
rogerw
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