A suggested multistage high voltage multiplier design utilizing a low duty cycle 10‐kc pulse drive has been built, tested, and found reliably operable at twice the dc voltage gain per rectifier stage of conventional sine wave drive Cockcroft‐Walton multipliers. Low capacitance rf tuned circuits across the ends of similarly tuned filament and anode lines permit simultaneous independent utilization of these lines for conveying pulse drive and rf filament heating current. A novel rf compensating and pulse canceling arrangement substantially eliminates output voltage ripple. The ten‐stage prototype tested utilizes miniature commercial 1AX2 vacuum rectifiers and 20‐kV T.V. doorknob condensers and has been successfully operated at output voltages in excess of 250 kV and at output currents exceeding 500 &mgr;A. Output impedance was 60 M&OHgr;. Voltage gains in excess of 200 kV/ft appear feasible.