Posted on Feb 6, 2014

The GM Counter Accessory is shown below. It can generate a DC voltage upto 1 KV using the 5V pulse generated on PWG. The duty cycle of the pulse is varied to control the voltage. The high voltage applied to the GM tube is divided by 200 and connected to CH0 for monitoring. The pulse generated by the GM counter when radiation passes through it is p

Click here to download the full size of the above Circuit.

rocessed and given to CNTR input of Phoenix for counting. Click here for the circuit schematic.

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