HM34S series

Output up to 2kV 0.25W, EN 61010-1 safe


High-Voltage-Supply HM34S
  • Output Protected According to EN 61010-1:2010
  • Ultra Low Ripple, High Stability
  • Lowest Noise to Below 1Hz
  • Very Compact Package, PCB Mountable
  • 6-sided Metal Shielding
  • Analog Programmable
  • Remote ON, Voltage Monitor
  • High Performance, Low Cost
  • Made in Germany


  • APD / Photodetector Bias
  • Radiation Detectors, Sensor Supply
  • Mass Spectrometry

The HM34S Series is a family of high performance high voltage DC to DC converters.
The converters' outputs feature protection against electric shock according to EN 61010-1:2010 / IEC 61010-1:2010-06 Edition 3.0 when connected to accessible parts. The short circuit output current is being limited to <2mA under normal condition and <15mA under single fault condition. The stored charge is <45┬ÁC.

Designed for detector supply applications these converters are equally suitable for other applications requiring ultra low ripple, lowest noise and high stability. They are encapsulated in a metal package providing 6-sided shielding. These compact converters are ideal for applications requiring small size, high performance, low cost and ease of use.
The devices are available for 5VDC or 12-15VDC input voltage. The output voltage is programmable via an analog voltage, such as the output from a DAC or by a potentiometer connected locally to the converter's reference voltage output (VREF). The output voltage is directly proportional to the programming voltage. It features excellent linearity.
The output can be enabled via the /ON input by means of a TTL level signal or just by an external contact (internal pull-up). A voltage monitor output is provided. Load regulation is excellent and the output voltage is independent from the input supply voltage. The output is not isolated. High voltage return is internally connected to ground (GND).

Model Overview

Output Voltage Max. Output Current Positive Polarity Output Model Negative Polarity Output Model Ripple / Noise
0 – 0.2 kV 1000 µA HM34S-0.2P- *1 HM34S-0.2N- *1 5 mVp-p
0 – 0.5 kV 500 µA HM34S-0.5P- *1 HM34S-0.5N- *1 5 mVp-p
0 – 1 kV 200 µA HM34S-1P- *1 HM34S-1N- *1 5 mVp-p
0 – 1.5 kV 150 µA HM34S-1.5P- *1 HM34S-1.5N- *1 10 mVp-p
0 – 2 kV 100 µA HM34S-2P- *1 HM34S-2N- *1 20 mVp-p

*1 - Input voltage designator: "5" for 5VDC, "12" for 12-15VDC


The information given here is technical data, not assured product characteristics. It has been carefully checked and is believed to be accurate; however, no responsibility is assumed for inaccuracies. The user has to ensure by adequate tests that the product is suitable for his application regarding safety and technical aspects. GmbH & Co. KG does not assume any liability arising out of the application or use of any product described.

Safety Advice

Design, installation and inspection of machinery and devices carrying high voltage require accordingly trained and qualified personnel. Appropriate safety rules and directives must be complied with.
Improper handling of high voltage can mean severe injuries or death and may cause serious collateral damage!