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Surely if the stock setup demanded a lower ROF than the direct-driven motor would produce and no colder-wound motor was datashset, you could do well enough with a dumb, cheap, string of diodes – or even a generic voltage regulator. At least people are aware you have to remove this PCB to do anything useful.
Newer Post Older Post Home. So why was this component used to drive the Nitron pusher motor? Peak current handling is 1. This is why throwing higher voltage batteries at a stock ‘tron makes the flywheel rev higher, but doesn’t change the terrible ROF.
AN6651 Datasheet PDF
Could it have something to do with dropout voltage? That is the biggest mystery of them all.
Haven’t checked, not worth the time to investigate the numbers of this application. Saturday, October 19, Nitron Technical Observations.
(PDF) AN Datasheet PDF Download – Motor Control Circuit
Pages Home Chrono Data Archive. This strange heatsinked 4-pin package hanging off the side of the PCB is the first thing many people notice about the stock motor setup on the ‘Tron pusher. A quick Google nails it down what the mystery component is: More or less ann6651 fancy linear voltage regulator that allows taking into account the motor IR and Kv in the selection of datawheet external resistor values to get a very stable constant-speed, governor-like behavior.
This is probably a Part 1 since this is an ongoing project, but I am working occasionally but steadily on a ‘Tron overhaul for an HvZ player at a nearby campus.
Could there possibly be a need for that tight of speed control of this motor? Except it makes sense in combination with the next bit, which makes AB difficult to implement in the stock configuration.
As it turns out, “voltage regulator” is a very close guess. Along the way I came across 2 odd details about the stock Nitron electrical system. Qn6651 has included that the device is a voltage regulator or a MOSFET used for solid-state switching of the motor power with the small switches scattered all over the Nitron’s guts for various interlock purposes.
Applications listed in the datasheet include tape decks and CD players. One is that the pusher is cycle-controlled with the switch mounted on top of the battery box that follows the stepped edge of the cam disk but there is no active braking. Posted by torukmakto4 at 7: