Transistor-Driven Beam Switching Tube Decade Counter

This paper describes an electrical readout decade counter employing the magnetron beam switching tube with transistor drive. Double-pulse resolution is 1 ¿sec. The unit will accept a variety of transistor types, and will tolerate supply voltage variations of ±20 per cent at ambient temperatures up to 60°C. A "Pixie" neon indicator is driven without the use of additional transistors. A readout circuit for printer or punched paper tape is presented.