Stereomour Power Transformer

ebag4 · 2919

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Offline ebag4

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on: August 04, 2011, 06:30:17 AM
Would there happen to be a spare 12-0-12 output rated at 5VA available on the power transformer of the stereomour?

Best,
Ed

GO CARDS!!!


Offline Paul Joppa

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Reply #1 on: August 04, 2011, 07:26:09 AM
No.

The 12-volt CT winding (6-0-6v) can deliver about 0.5 amps RMS current; the 12AT7 consumes 0.15 amps so there is 0.35 amps to spare. That's about 4.4 volt-amps.

The center tap must be grounded since this winding serves as an electrostatic shield for the 2.5v windings. Are you thinking perhaps of generating a +/-12vDC supply for some other circuit? If so, that could possibly be done.
« Last Edit: August 04, 2011, 07:30:49 AM by Paul Joppa »

Paul Joppa


Offline ebag4

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Reply #2 on: August 04, 2011, 12:01:14 PM
No.

The 12-volt CT winding (6-0-6v) can deliver about 0.5 amps RMS current; the 12AT7 consumes 0.15 amps so there is 0.35 amps to spare. That's about 4.4 volt-amps.

The center tap must be grounded since this winding serves as an electrostatic shield for the 2.5v windings. Are you thinking perhaps of generating a +/-12vDC supply for some other circuit? If so, that could possibly be done.

Thanks for the info Paul.  I am going to install a LDR volume control in my Stereomour chassis, if the current transformer could handle it that would save me a small transformer, since it can't I will simply purchase the transformer as well.

Best,
Ed

GO CARDS!!!