Motor DC Sony JJN4B PM Tachometer Assembly Flywheel Bronze Bearings Double Pulley

This is a precisely made, miniature Permanent Magnet (PM) DC motor with an integral flywheel, a double brass pulley, and bronze bearings. The small PC board has two high quality expensive capacitors and two toroidal inductors in a filter configuration. It looks like this motor has a built in tachometer to allow very precise RPM control. The tachometer winding provides RPM information to allow very precise rotational control and it would make a classy but simple precision, low distortion sine-wave generator. The motor begins to rotate at 1 Volt, while it's no-load current is around 50-100 milliamperes no load. Motor resistance between yellow and blue wire is 750 Ohms. Resistance between red and white wires is 5 Ohms. It runs super quiet with very low power. It makes a precision drive motor, a nice generator with a small windmill or some other great science project. First come first serve. Only one available.
Sony JJN4B precision PM DC motor flywheel bronze bearings double pulley assembly [10 KB]

Motor Sony JJN4B - Precision assembly
Integral flywheel and brass double pulley
Motor begins to rotate: 1 VDC
Motor current: approx. 50-100 mAmp no load
PC board has 2 capacitors, 2 toroid coils, connector
Bronze sleeve bearings Made in Japan
Size: 40 Dia, 72 L (with pulley) [mm]
Shaft size: 3 mm Dia, 14 L [mm]
Weight: 275 Grams (assembly)

Used Price: $50 One available
S/H included within continental US
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