ALC60 and PSA12
Verfasst: Do 24 Okt, 2002 9:30 am
I have a problem with my ALC60 system. When I turn up the "power", the beam intensity is not stable. It oscillates. Up to 10A is it no problem, but 10-12A it is oscillating VERY much.
I put my oscilloscope probe on the current measurement connectors (red and black 4mm connectors) on the ALC 60. At full power I got following readings:
2VDC with 0.8VAC peak-to-peak (+/- 0.4V) @100Hz.
This makes a max current of 12A and a min current of 8A during the oscillations. The 100Hz is of course the 4-diode bridge rectification. So the large capacitors can´t seem to stabilize to a good DC voltage.
Is it the tube or the PSA-12?
Best regards,
Magnus Pihl
I put my oscilloscope probe on the current measurement connectors (red and black 4mm connectors) on the ALC 60. At full power I got following readings:
2VDC with 0.8VAC peak-to-peak (+/- 0.4V) @100Hz.
This makes a max current of 12A and a min current of 8A during the oscillations. The 100Hz is of course the 4-diode bridge rectification. So the large capacitors can´t seem to stabilize to a good DC voltage.
Is it the tube or the PSA-12?
Best regards,
Magnus Pihl