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So why was this component used to drive the Nitron pusher motor?
Posted by torukmakto4 at 7: Along the way I came across 2 odd details about the stock Nitron electrical system. At least people are aware you have to remove this PCB to do anything useful. Could there possibly be a need for that tight of speed control of this motor?
That is the biggest mystery of them all. Applications listed in the datasheet include tape decks and CD players.
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. Pages Home Chrono Data Archive.
Newer Post Older Post Home. 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. This strange heatsinked 4-pin package hanging off the dtaasheet of the PCB is the first thing many people notice about the stock motor setup on the ‘Tron pusher. One is that the pusher is cycle-controlled with the switch mounted on top of the battery box that follows the stepped datashset of the cam disk but there is no active braking.
AN Panasonic Motor Control Circuit ChipFind Datasheet Archive |
Haven’t checked, not worth the time to investigate the numbers of this application. A quick Google nails it down what the mystery component is: Could it have something to do with dropout voltage? Speculation has included that the datashdet is a voltage regulator or a MOSFET used for solid-state switching of datashee motor power with the small switches scattered all over the Nitron’s guts for various interlock purposes. Except it makes sense in combination with the next bit, which makes AB difficult to implement in the stock configuration.
Saturday, October 19, Nitron Technical Observations.
Surely if the stock setup demanded a lower Ddatasheet than the direct-driven motor would produce and no colder-wound motor was available, you could do well enough with a dumb, cheap, string of diodes – or even datashset generic voltage regulator. As it turns out, “voltage regulator” is a very close guess. This is why throwing higher voltage batteries at a stock ‘tron makes the flywheel rev higher, but doesn’t change the terrible ROF.
Peak current handling is 1.