Sensibly equivalent¶ to:
The EM85E tuning indicator uses the closing of two bars to indicate tuning or voltage level. The grid voltage change for full deflection is from -14 to 0 volts. Pin 7 is defined as a deflection electrode and the anode of the indicator is called the target. The grid of the indicator is strapped to the cathode. The first half of the valve is a triode amplifier as is usual.
The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 62 mm tall.
References: Datasheet & 3002. Type EM85E was first introduced in 1959.
Absolute Maximum Operating Conditions¶
Updated February 20, 2013. shape:thin.glass.tube construction:all.glass type:tuning.indicator age:1950.1960 base:b9a heater:6.3v pins:9 pin:1.g1 pin:2.ic pin:3.k.g pin:4.h pin:5.h pin:6.t pin:7.defl pin:8.ic pin:9.a