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CV1787

Sensibly equivalent to:
4C35 FX225 FX2505 ME1503 XH8-100
See also:
English Electric Hydrogen Thyratrons Advert
    
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The CV1787 is a hydrogen thyratron designed for switching in-line modulator circuits of microwave radar with the 4C35 as the prototype. Other uses include induction heating and pulse modulation.
In essence this type of valve acts as a fast switch with low on resistance and momentarily connects a bank of charged capacitors across a magnetron and thus delivers a pulse of a high power for a few micro-seconds.
The anode is a flat disc that is encased in glass from the top cap and through the screening can.
The wide glass tube envelope is 63 mm in diameter, and excluding the base pins is 145 mm tall.
References: Datasheet.

 

Pin Connections
1
2
3
4
tc
g1
h,k
h
k
a

 

Absolute Maximum Operating Conditions
Thyratron
Vh
Ah
Va
6.3
6.0
2,500
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated June 27, 2018.
shape:wide.glass.tube construction:pinch type:thyratron age:1950.1960 base: heater:6.3v pins:4 pin:1.g1 pin:2.h.k pin:3.h pin:4.k pin:tc.a
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