The only thing I see missing is a series resistor on your Zener diode
chain, between D30 and the HV supply.
On 5/26/16 1:20 PM, SWISSNIXIE - Jonathan F. wrote:
Attached i have my first idea of the drive concept, i take much from the
datasheet, but with modern parts.
The top two HV513 are set to polarity "1", what means a logic 1 will
source voltage, a 0 will tie the output to GND, to avoid short circuit,
i added diodes. When one Anode is off, it will be at about 105V clamped
through diodes.
For the bottom one, the two HV51 are set to polarity "0", what means a
logic 1 will tie the output to GND, a 0 will source voltage from VPP,
which is connected to the 75V Voltage. XA15 will be the screen which is
permanently at 75V.
--
David Forbes, Tucson AZ
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