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unknown output trannie
unknown output trannie
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Old 12th September 2007, 10:59 AM   #1
gja is offline gja  Spain
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Default unknown output trannie

Attached youŽll find a picture of a transformer pulled from a mono amp with 2x 6j7g tubes + 2 6v6g.anyone got a clue about the transormer make?Or te specs?I would like to build the psu for the amp...IŽll keep the same tube lineup,a schematic of something equivalent would also help.dimensions of trafo are 9cm wide,7cm deep and 12cm high (aprox).has letters on the input side and numbers on the output.thanks for the help.
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Old 12th September 2007, 01:49 PM   #2
Tom Bavis is offline Tom Bavis
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Location: Macedon NY
First take resistance measurements. High resistance winding is primary. Measure voltage ratio by applying 50/60 Hz AC to primary and measuring secondary. Impedance ratio is voltage ratio squared. So for example, 30: 1 voltage is 900: 1 or 8100 : 8 Ohms. There might be another secondary for feedback - there certainly are enough terminals!
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