Original Merrill/AR motor controller, as designed for 12v Merrill motor. This has two outputs, one std and one 90 degrees out of phase to drive both motor coils. This is in the original case, missing original board, but circuit is carbon copy, including layout on perf board. Analog oscillator circuit for 60Hz, 90 degree phase lag circuit and two 65 watt class A/B amplifiers. Unit has been tested and calibrated for 60Hz and 90 degree phase (adjustable on board). Front control allows adjustment of 60Hz to adjust motor speed. Will drive any small 12Vac 60Hz motor. Unit will drive AR 120vac motor with addition of 12/120v step up transformers. I have a copy of schematic and picture of original board to show layout and components. $100.00
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