68kMLA Classic Interface
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| Click here to select a new forum. | | Macintosh Classic Analog board blowing fuse and mosfet IRFBC40 | Posted by: techknight on 2017-04-26 14:56:44
yes as well as having built-in circuitry for dead-time control, under-voltage/over-voltage/over-current lockout, and the oscillator.
| Posted by: bibilit on 2017-04-27 02:39:45
Ok, many thanks, from the information collected, supply voltage should be around 10 volts ?
| Posted by: Ferrix97 on 2017-04-27 10:34:52
Yes, there's a slight dip at around 9V when the IC starts working (if you measure while connected to a variac).
But before staring to measure the IC, I'll change the poly cap and the fusible resistor first
| Posted by: bibilit on 2017-04-27 23:28:03
Ok, thanks, will order parts this week, don't have any spare except for the TDA4605.
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