E.H.T.-0 to 5 kV d.c., continuously variable. Terminal output voltage indicated by meter. Max short circuit current is safely at 3 mA. A heater supply 6.3 V a.c. at 4 A is fully isolated & insulated for 5 kV.
Mains 500 mA antisurge fuse, Output overload protected, E.H.T. max current limited to 3 mA.