A Simple, Valve Curve Plotter

[pwdrive]

You might or might not want to consider an LR8 regulator, the differential voltage rating is well within so far as I can tell, the drawback as it stands is the current rating, but for most screen grid supplies it should be ok unless your into heavy PA valves, over current protection is apparently 20 ma but from what I understand the protection starts to kick in at a lower value but I reckon you should be able to get 10 ma out of it which should do most valves.

It might be possible to use it as a driver some how for say a MOSFET used as a series pass so as to increase the current capability for anode current supplies.

Here's a link to the data sheet with some apps:

http://ww1.microchip.com/downloads/en/De...080113.pdf

Here's a link to a basic curve tracer where the LR8 is used for the screen voltage supply:

http://www.valvewizard.co.uk/curvetracer.html

Lawrence.