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Construction of High Voltage Power Supply Unit for GM Counter
- High Voltage Power Supply Unit is essential for nuclear radiation detection or counting system. A high voltage power supply unit that is suitable to use with GM (Geiger Muller) counter is constructed with locally available components. The constructed high voltage unit is based on push-pull mode and it is acceptable for low-level primary voltage (2V to 10.19V) and delivers it at high-level secondary voltage (105V to 514V) of transformer. To avoid the insulation problem at the transformer secondary coil, a voltage multiplying circuit is used. The desired voltage is rectified and multiplied by voltage multiplier unit provides 3055V (-3 kV) DC at approximately 1mA output current.
Khin Kyu Kyu Hlaing