An SCR Marx circuit which is characterized as inexpensive and reliable, with no warm‐up or heater power has been constructed, tested, and utilized in a pulsed discharge experiment. The specific circuit design produced an output pulse of 13 kV with a risetime of 0.12 &mgr;s and a FWHM of 0.16 &mgr;s. With a 500 V self‐enclosed battery power supply, the pulse generator was insensitive to triggering by stray signals, with an observed jitter of ±50 ns in triggering a spark gap of 18 kV.