High vacuum pentode switching circuit - generates two time symmetrical high voltage output signals using control and supply voltages

摘要

The high vacuum pentode switching circuit is used to generate time symmetrical output signals. In particular, with a control voltage of 100V and a supply of 1500V, two symmetrical saw tooh waveform voltages of 1200V peak are produced. The anode (20) is coupled to one reference voltage (25) and the cathode (12) to a second reference (32). The screen grid (16) is coupled to an independent supply (36) with an isolating transformer (38) the control grid (14) is supplied over a step signal generator (46) coupled to a control voltage source (36'). Two capacitors (22, 28) exhibit similar charge characteristics to provide similar output signals.