The instrument is designed to draw
the characteristic of the pentode valve. It has two built in power supplies.
Four 65mm dia meters are provided to read different electrode volt/current.
The pentode valve is fitted on board. The student have to make the
connection. Input:- 230 volts AC, H.T.1 (stabilised):- 0-300volts at
30mA, H.T.2:- 0-250 volts at 25mA, Bias:- 0-15 volts at 100mA, L.T:- 6.3
volts at 2 amps, Built in a nicely box with on/off switch. jewel light etc.