How to control the HV converter with analog voltage signal?

The equipment wiring diagram(2nd version) is as follows:

Use a voltmeter to actually measure the voltages of pin13 and pin11 relative to pin6 are 9.998V and 3.0V respectively

However, the HVA always outputs 63V, no matter what the volatge of pin2 is

100uA is not much.

I used a 1/12 divider between the output and the voltmeter to avoid damaging my voltmeter due to high voltage

It would be worth buying a proper 20kV rated high voltage probe for your meter.

You can use the ppwer supply built in voltage monitoring to check its output.

What is hapenning with power supplyLEDs when you are testing ?

MK

Value of resistors?

You mean the divider? The divider is 0.6325MΩ

The power light is on when the power supply is normal

And the 'high voltage on' led ?

MK

There are only two leds, one is the power and the other one is the enable indicator light. The enable indicator light is on when the pin11 is more than 2.4V, and it works well.

So it looks as if your power supply thinks it is working.

How is you divider working - (diagram) - its a strange co-incidence that 100uA into 0.63M would give excatly 63V.

Your power supply max output current is 100uA.

Are you trying to make it work into a 630k load ?

If you apply a 30mV voltage control signal do you get 30V on the output ?

MK

No matter what voltage I gave for the pin2, the HVA always output 63V, but when I changed the pin13 to 5V, HVA output 31.5V, as if only the current can adjusted HVA output. This voltage divider is a 1/12 resistor divider composed of several hundreds KΩ resistors

No matter what voltage I gave for the pin2, the HVA always output 63V, but when I changed the pin13 to 5V, HVA output 31.5V, as if only the current can adjusted HVA output. This voltage divider is a 1/12 resistor divider composed of several hundreds KΩ resistors

Did you try pin 2 with 30mV ?

UNless you describe the voltage divider accurately no one can help you.

An accurate description is one which would enable the reader to reproduce what you are doing.

Pictures can help.

MK