The unit consists of two Meters. One to read H.T. Voltage/current and second to read bias voltage.
Output (a) H.T 0-300 volts D.C. at 30 mA
(b) Bias 0-30 volts D.C. at 10 mA
(c) L.T. 6.3 Volts A.C. at 2.5 Amps

Same as above but with Three meters for independent readings

Same as above but with following output and two meter
Output (i) H.T 0-300 volts D.C at 50 mA
(ii) Bias 0-30 volts D.C. at 10mA
(iii) L.T. 6.3 volts A.C. at 2.5 Amps
(iv) L.T. 5 Volts A.C. at 2.5 Amps

Same as above but with Three meter for independent readings of voltages, current and Bias voltage Most suitable to draw the characteristic of Diode Valve and Triode Valve

Power supply consists of TWO METERS to read H.T. Voltage/Current and Bias voltage
Output (a) H.T 0-300 volts D.C. at 30 mA regulation 1%
(b) Bias 0-30 volts D.C. at 10 mA
(c) L.T. 6.3 Volts A.C. at 2.5 Amps
(d) Line regulation : 1% for 10 % change in mains
(e) Ripple and Noise : Less than 0.1 volts RMS

Same as above but with THREE meters independent readings

Dual Power Supplies for Tetrode/Pentrode Valve Characteristics, stablisation is 1%. Unit is enclosed in nicely painted steel cabinet. Input 220 volts A.C. The unit consists of five round meters
Output (a) H.T. 1 0-300 Volts D.C. at 30mA
(b) H.T. 2 0-150 Volts D.C. at 15m A
(c) Bias 0-30 Volts D.C. at 10mA
(d) L.T. 0.5-6.3 Volts A.C.at 2.5 Amps

Solid state and fully protected against short circuit and overload. It consists of two Meters, one for output voltage and second for current
Output 0-30 volts
Stability : 0.1%
Ripple contents : Less than 5mV
A Output Current : 0.5 amp
B 1 amp.
C 2 amps
with Digital Meters add

For Transistor Ch. App. output 0-10 V DC at 20 mA and 0-1.5 V DC at 20 mA
A. with 2 meters
B. without meters

For P.N. Junction Diode Ch. App. Output 0-30 V DC at 20 mA and 0-1.5 V DC at 20 mA
A. with 2 meters
B. without meters