[Milsurplus] More on the Search for the Stable BC-375 Oscillator.

[David Stinson]

Progress report:
Here's prototype driver #2.
IRF-510 driven by a 7.027 MC programmable oscillator.
http://home.netcom.com/~arc5/oscproto2.jpg

This is the waveform at the gate.  5 V PTP
(my scope trace doesn't focus really sharp).
http://home.netcom.com/~arc5/gatewaveform.jpg

This is the waveform across the 5K dummy load.
About 60 V PTP.
The 211 grid resistor to ground is 7.5K:
http://home.netcom.com/~arc5/Outwaveform.jpg
Look at the tops of the waveform.
Is this thing "jittering" in amplitude or is it just 
noise on my test leads?

Given the 375 is going to run at reduced plate B+,
this may be just enough drive. We'll see.

I did try a new type programmable oscillator.
They are all fragile, but these new ones are very 
easy to "pop."  Blown two of them so far from minor
Vdd transients.  Going to go back to the old type.

73 DE Dave AB5S