Abstract
A medium accuracy digital voltmeter which is robust, reliable and inexpensive is described; particular reference is made to the decade counters, which need only be capable of counting at moderate speeds.Various types of counters are discussed, and a comparison made of their costs. The conclusion is reached that the use of a multiple-anode dekatron counting tube in conjunction with a cold cathode number tube provides the most economic method of counting.A detailed description is given of, the counters used in the voltmeter, including the drive circuits, the coupling of the dekatron to the number tube, and the reset and carry arrangements.
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