A New Scale-of-Ten Recorder
Raymond D Lowde · Journal of Scientific Instruments · 1947
The special features of the instrument are its compactness and small cost. Its operation is best described as that of scaling by 2 (2 2 +1), pentode `flip-flop' scale-of-two pairs being employed throughout. These units are designed so that buffer stages are not required. In the output stage additional provision is made for a recorder resolving 1/20 sec., with which the statistical loss on random counting becomes 1% at an average rate of some 4000 counts/min. The resolving time of the scaler is less than that of an ordinary Geiger-Müller tube, and although not developed as a high-frequency instrument, the model will scale a regular pulse input up to frequencies of the order of 100 kc/s.