How to use high voltage power supply modules?

What to prepare

• High-voltage power supply module (required)
• DC power supply (required)
• Control voltage source or potentiometer (either required)
• Voltmeter (one or more, more than one would be useful)
• High-voltage probe/voltage divider *Not used in this example.

wiring connection

1. Output terminal connection
   First, safety measures should be taken to prevent electric shock or short circuit due to output terminals.
   (Insulation cover or the like should be attached to avoid touching the terminals.)
   If you just want to check the operation of the high-voltage module, do not connect anything.

   To measure output voltage, connect a voltage divider or high-voltage probe to the output terminals and measure with a voltmeter or oscilloscope.

2. Monitor terminal connection
   Connect a voltmeter to the voltage monitor terminal (Vmoni) to monitor the output voltage.

   

3. Control terminal connection
   Understand the output range and control range to prevent the output voltage from rising inadvertently.

   When controlled by a voltage source
   Prepare a DC power supply that can output the input voltage and power of the high-voltage power supply module to be used. This time we have an adjustable regulated DC power supply from 0 to 10V.
   Please prepare a DC power supply with as high a stability as possible. Connect the common of the control terminal (CCW/COM) to the negative output terminal of the power supply for control, and connect the output voltage control terminal (Vcon-in) to the positive output terminal of the DC power supply for control.

   

   When controlled by a potentiometer
   Prepare a 5kΩ potentiometer.
   (The required potentiometer resistance value depends on the specific power supply model.)
   A multi-turn potentiometer (e.g., 10 rpm) is recommended. Before connecting, set the potentiometer to its maximum resistance. Connect Vcc, GND, and Output of the potentiometer to the control terminals respectively.

   

4. output ON/OFF switch connection
   Connect a switch between the Remote ON/OFF (REM) terminal and the Ground (GND) terminal.

   

5. Connect DC power supply for input power
   Check that the output of the DC power supply for input power meets the input power specifications of the high-voltage power supply module.
   (voltage, current, rise time, etc.)

   • Before connecting, check that the DC power supply alone is outputting the correct voltage.
   • In the case of a variable power supply, the CV should be set to the required voltage and the current should be set to the required current value. Connect the power supply for input to Vin and GND of the control terminal. (Refer to the connection diagram.)

   

Energizing Procedure

1. Check that there is no contact between each terminal, enclosure, etc.
   Also, make sure that the terminals are placed in such a way that they do not accidentally touch the terminals, etc.
2. Turn on the voltmeter.
3. When controlling with a potentiometer, make sure that the resistor is set to the maximum. (setting where the output voltage is at its lowest) When controlling with a variable DC power supply, make sure that the output voltage is 0 V.
4. Turn on the DC power supply for input power.
5. Turn ON the switch connected to the external output ON/OFF. (The output is turned on.)
6. Check the voltage at the output monitor terminal.
7. When controlling with a potentiometer, operate the potentiometer and confirm that the value on the output monitor changes. When controlling with a variable DC power supply, operate the output voltage and check that it matches the value on the output monitor. (Be careful not to increase output voltage too much.)

Shutdown Procedure

1. WARNING: Hazardous voltage can remain in the power supply module and any connected circuitry even after the input power is turned off. Exercise extreme caution at all times, even after the operational check is complete.
2. Set the potentiometer or variable power supply so that the output voltage is zero.
3. Confirm that the value of the output voltage monitor is zero.
4. Turn off the input power.
5. Disconnect the input power and control terminals.
   Before touching the high-voltage output terminals, you must safely discharge any residual charge. To do this, short the output terminal to the ground (GND) terminal using an appropriately rated and insulated tool. This is a critical safety step.

Related FAQs:

• This is the first time for me to handle the high voltage power supply. So, I want to know the safety usage of the product.
• The high-voltage power supply module is not working properly. What could be the cause?