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TYPE 2J55\ 3 Stage Marx PFN Pulse Modulator
HV Pulse OUT connects to 2J55 cathode
DIY Current viewing transformer
Note: pulse transformer is NOT connected
Current viewing transformer
HV probe\ monitor magnetron cathode
Pulsed magnetron current (12 AMPs);Current viewing transformer
Pulsed cathode voltage; HV probe
Pulsed cathode voltage; HV probe
RF envelope of magnetron output using a 1N23 microwave crystal detector
DIY 6.3 vac 2J55 heater transformer; constructed from a small microwave oven transformer; winding removed; replaced with 300turns
# 22 magnet wire (black winding above) and about 16 turns # 18 well insulated (white above)
Note tha the secondary output is shunted with four Panasonic 3KV 2700pF ceramic capacitors in parallel
See video of Marx in operation; note that the sparks are barely visible for 1K ohm impedance
See video of pulse to pulse repitition smoothness