N
Nick
Guest
My Gould scope has died, it seems that the EHT supply has died. This is a
2.5kV rail supplied from a 950V secondary and a charge pump. The diodes
appear to be blown (I set my variable PSU current limit to 20mA then wound
up the voltage to measure Vf - the PSU goes up to 30V, there can't be THAT
many junctions in a package 10mm long!)
The scope manual lists them as "IJK60TR 6kV"
Some Googling suggests FM50 or SL1200, but I can't find them either. In fact
diodes with this voltage rating seem quite rare. I know I could stack some
lower voltage diodes (and bleed resistors) but space is a bit limited.
Can anyone suggest a replacement, or supplier in the UK?
Thanks
Nick
2.5kV rail supplied from a 950V secondary and a charge pump. The diodes
appear to be blown (I set my variable PSU current limit to 20mA then wound
up the voltage to measure Vf - the PSU goes up to 30V, there can't be THAT
many junctions in a package 10mm long!)
The scope manual lists them as "IJK60TR 6kV"
Some Googling suggests FM50 or SL1200, but I can't find them either. In fact
diodes with this voltage rating seem quite rare. I know I could stack some
lower voltage diodes (and bleed resistors) but space is a bit limited.
Can anyone suggest a replacement, or supplier in the UK?
Thanks
Nick