Triode Valve on Base

SKU: GP0939

For investigations into the behavior of triode valves, showing ionisation and excitation potentials in different gases. Comprises a box, 90 x 90 x 35 mm, on the top panel of which are mounted an octal and a B7G valve holder. Connections for heater, cathode, grid and anode are provided and are brought out to colour-coded 4 mm sockets.