Main technical characteristics of 6Zh49P-DRU:

Rated electrical data:

Heating voltage, V …… 6.3 ±0.3

Glow current, mA …… 300

Anode voltage, V …… 150

Voltage on the second grid, V …… 150

Resistance in the cathode circuit, Ohm …… 80

Current in the anode circuit, mA …… 15 ±4

Current in the circuit of the second grid, mA ...... no more than 2.5

Slope, mA/V …… 17.5 ±3.5

Input resistance, kOhm ….. 5

Internal resistance, kOhm ….. 100

Equivalent noise resistance, kOhm ….. 0.35

Maximum allowable electrical values:

The highest voltage at the anode, V ……. 150

The highest voltage on the second grid, V ……. 150

The highest power dissipated on the anode, W ...... 2.85

The highest power dissipated on the second grid, W ...... 0.52

The highest current in the cathode circuit, mA ...... 22.5

The highest voltage of the cathode-heater, V ... .. 100

The highest voltage on the anode with the lamp locked, V ……. 300

The greatest resistance in the circuit of the first grid, mOhm ...... 0.5