AN6651 DATASHEET PDF
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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.
That is the biggest mystery of them all. Speculation 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.
Newer Post Older Post Home. A quick Google nails it down what the mystery component is: Pages Home Chrono Data Archive.
Along the way I came across 2 odd details about the stock Nitron electrical system. As it turns out, “voltage regulator” is a very close guess. Posted by torukmakto4 at 7: So why was this component used to drive the Nitron pusher motor? Except it makes sense in combination with the next bit, which makes AB difficult to implement in the stock ab6651.
AN Datasheet, PDF – Alldatasheet
Could it have something to do with dropout voltage? 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.
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.
AN Panasonic Motor Control Circuit ChipFind Datasheet Archive |
Surely if the stock setup demanded a lower ROF datasheeg the direct-driven motor would produce and no colder-wound motor was available, you could do well ann6651 with a dumb, cheap, string of diodes – or even a generic voltage regulator. Haven’t checked, not worth the time to investigate the numbers of this application. At least people are aware you have to remove this PCB to do anything useful.
Saturday, October 19, Nitron Technical Observations.
More or less a fancy linear voltage regulator that allows taking into account the motor IR and Kv in the selection of 2 external resistor values to get a very stable constant-speed, governor-like behavior. Could there possibly be a need for that tight of speed control of this motor?
This strange heatsinked 4-pin package hanging off the side of the PCB is the first thing dagasheet people notice about the stock motor setup on the ‘Tron pusher.
Applications listed in the datasheet include tape decks and CD players.