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GE10

Sensibly equivalent to:
CV5109
    
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The GE10 is a saturated emission diode primarily for use as a control element in AC stabiliser circuits.
The GE10 has a directly heated tungsten filament and to ensure that it operates with saturated current the anode voltage must be 100 Volts or more. The characteristic that makes it suitable as a control element is the large change in anode current for a small change in filament voltage.
The internal structure is obscured by the gettering. What can be seen is a small cylinder near the base and a wire frame higher up in the envelope.
The base connections marked j indicates a short circuit between pins 3 and 4. This enables the equipment to be designed such that if the valve is removed the equipment will shutdown.
Thanks to R J Sutherland for supplying the information.
The wide glass tube envelope is 27 mm in diameter and, excluding the IO base pins, is 60 mm tall.
References: Private communication & datasheet. Type GE10 was first introduced in 1957.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
-
f
j
j
a
-
f
-

 

Absolute Maximum Operating Conditions
Diode
Vh
Ah
Va
1.8
0.33
500
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 21, 2014.
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