as many as I need.. have a drawer full of them at the shop.. mostly for newer cars so there just the headlight bulbs instead of the older big square glass ones.. I believe I have some fake hid types that are between 70 watt and 95 watt for the bright side.You will need some loads. How many 12V automotive headlamps can you get your hands on?
I've fixed (and seen inside) hundreds of Marantz units. Based on the transformer dimensions and appearance it's about 100 W (total for all windings). Maybe 120 but 100 is a safer guess.heres a couple pics.. I measured it and its 4 inches tall 2.5 inches deep on the frame and 4 inches deep to the very edge.. and its 5 inches wide.
That is the main winding, which was used for the power amp rails. It will be about 80% of the total coil area so is about +/- 24v DC at approx 80W.... the center tapped coil measures 22.5 on each leg from the center. after I put the recitifier on it and 10kuf 50v filter caps it measured 30.04vdc.
Maybe good for 1 amp. 500mA is safer. Was probably used for the HiFi/display microcontroller and 5v logic etc....
the second coil measures 8.1vac, I was going to use this one for a 5v regulated supply.
That was probably used for the VFD display which need a low current rail of about 50v. That winding will not be good for any significant current. Maybe 200mA tops(?) but maybe as low as 50-100mA....
the 3rd one measures 38.5vac, im not sure what im using this one for, I was thinking a regulated 12vdc supply ...
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by John Koon
by Jake Hertz