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Old 8th March 2009, 05:47 AM   #1
trans is offline trans  United States
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Default HV transformer replacement

One of the HV DC supply transformers in my 1990s era Electrostatic Research speakers went out. The input is AC Mains, and one secondary connects across a leg of a 2200m 6kv cap to the diaphragm, the other one connects to a series of resistors and a rectifier to the audio signal transformer. The only marking on the transformer is TDS 9629B. How can I determine the DC voltage and find a replacement. I donít have a HV probe to check the other transformer. Are there any other options?

trans
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Old 12th March 2009, 03:33 AM   #2
Bazukaz is offline Bazukaz  Lithuania
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Can you post a good quality photo or try to re-draw schamatic diagram of your EHT supply?

Regards,
Lukas.
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Old 14th March 2009, 01:29 PM   #3
trans is offline trans  United States
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Lukas,

Thanks for replying. I solved the problem by running DC voltage from the secondaries to the primaries, in effect reversing the transformer to a stepdown. The ratio is the same either direction.

trans
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