Mike, those crystal ovens are usually dirt simple - just a thermostatic switch
(set to open when the temperature exceeds the desired operating temp) connected
in series with a heater. You apply the rated voltage, the heater turns on
until the temperature goes above the set temp and then the switch opens, heater
turns off, oven cools down, thermal switch closes, etc, etc. Should be easy to
eyeball and to use a VOM to figure out what is going on. Or maybe not.
Bob Groh, WA2CKY
On Saturday, June 18, 2016 1:49 PM, Michael Tortorella <[email protected]>
wrote:
Greetings to the list, I am looking for a schematic and base pinout for a
Northern Engineering Labs NE-71 crystal oven. Can anyone help?
Thanks and 73
Mike W2IY
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