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Old 10-31-2021, 04:55 PM   #7
Solder Sloth
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Join Date: Nov 2012
City & State: CO
My Country: USA
Line Voltage: 120VAC 60Hz
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Posts: 7,193
Default Re: Motor control board

Odd both regulators are TO-3P and the board silkscreen says out-in(tab)-G which is typical for the negative rail regulator (should be in-G(tab)-out for positive). Make sure the "in" is the right voltage in any case.

These regulators are probably NOT for the motor but rather for the zillion op amps on the board that may control the motor drivers.
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