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Ballpark calculating small PP-OPT primary impedance?
Ballpark calculating small PP-OPT primary impedance?
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Old 11th June 2019, 10:55 PM   #11
Windcrest77 is online now Windcrest77  United States
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Thanks! Much appreciated. These kind of documents are "unfindable" on the internet because they are image scanned not text OCR scanned. Thanks again I would have never found these.
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Old 11th June 2019, 11:05 PM   #12
pcan is offline pcan  Italy
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Ballpark calculating small PP-OPT primary impedance?
This is the additional note at the Mullard circuit. It answers your original question: the manufacturer specified impedence for ECL80 push-pull at 170 to 200V is 15k.
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