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RE: effect of AC heating on 45 DHT filaments ...w/graph

I am no EE (obviously!);can you help me interpret the results from what you have provided?

What level of 50Hz hum do you currently have on your breadboard? Do/how much the sidebands change in level in when the hum level changes?

Regards,
91.

"Confusion of goals and perfection of means seems to characterise our age." Albert Einstein



Edits: 06/18/15

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