Philips AC Konstanter 7776? (Techniek Radio/TV)

door Ad Zijlmans , Made, 01.02.2013, 22:30 (4315 dagen geleden) @ Maarten Bakker

Hello Martin,

As Maarten already suggested, this stabilizer is based on a saturated core transformer. Long time ago (late seventies) I got a similar device from surplus stock of Eindhoven University. The transformer has a large coil with many windings of very thin wire. Therefor it is possible to use a relatively small current (notice the EL34 that drives this coil) to control the 10A output current.

As the equipment was already outdated by then, I guess it originated somewhere from the late fifties. In my case the driving coil was intermittent so I had no other option than to discard the device. I hope yours is still ok; it would be nice to get it working again.

Wish you succes,
Ad