Automatic range-changing of a linear ratemeter
S Lovett · Journal of Scientific Instruments · 1960
A circuit is described which automatically changes the range of a linear ratemeter as the count rate from a flow Geiger counter increases or descreases. The counter voltage is switched off when the count rate exceeds the maximum that the counter is designed to accept and is switched on at intervals to sample the count rate and remains on when the rate has diminished to an acceptable level.