The current image smps is rectified to about 315v and is used as the B + voltage of the tube amplifier
HER 508 4 diodes are used by bridge rectification.
Applied Trans: ETD49
Primary: 0.85mm X 1 - 40 TURN
Secondary: 0.32mm X 3 - 86 TURN : 315 V
When applied to the above specifications, the output waveform has a lot of ringing and noise.
I am making a new transformer to apply the center tap method.
Excellent -SMPS Transfomer Tool Data
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Thank you for your quick reply.
The above specs were first attempted and have problems.
Currently in production
The problem is trying to apply the center tap method rather than the bridge rectification method
Primary: (0.45x5) x 22 turn
Secondary: # 18wirre 1 turn: Normal output waveform (6.73V)
It is confirmed to be normal for testing
There is no problem in applying 420V winding to 80 turns
Further winding of 80turn will cause the coil to heat up even though there is no load
test: # 18 Wire 1turn: Output Waveform Distortion (5.8V)
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