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150C3

Sensibly equivalent to:
0D3 CV216 QS150/40 VR150/30
    
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The 150C3 is also called the 0D3 and is a gas filled voltage stabiliser. As a gas discharge discharge valve it is possible for it to have a near constant voltage drop characteristic when currents through the tube vary from 5 mA to 40 mA. In fact the regulation is 150 plus or minus 5.5 Volts.
Gas filled regulators of this type were made by all the major manufacturers and followed very similar construction patterns.
Such stabilisers are fed via a resistor from a higher voltage. For a stabilised voltage supply the stabiliser would be run at a near constant current as a reference for a valve amplifier and series pass valve. For low consumption applications such as a local oscillator the stabiliser alone would be used to supply the oscillator HT line.
The construction is of a central cold cathode within a cylindrical anode.
The wide glass tube envelope is 30 mm in diameter and, excluding the IO base pins, is 89 mm tall.
References: Datasheet & 1040. Type 150C3 was first introduced in 1939.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
nc
k
7
nc
a
nc
3
nc

 

Absolute Maximum Operating Conditions
Stabiliser
Va
Vstab
mAa
180
150
5-40
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 31, 2013.
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