Soft start voltage check

[vetmed]

Got my replacement parts today (thanks Eileen!). The board that worked before reads 348Vdc, 303 once it starts to regulate so I guess my meter is reading a few volts too high. The new board reads 355Vdc and even allowing for the inaccuracy of my meter that is higher than the "allowable" 350 volts. Both readings of course taken at B6. Any thoughts regarding the discrepancy would be greatly appreciated, don't want to screw up this board after all the hardships experienced so far.

 

[Paul Joppa]

I think that's OK. Does it pull down to 300v in less than 20 seconds?

 

[vetmed]

Yep, seems to take less than 20 seconds. Guess I can adjust the plate voltage on the driver. Thanks Paul.