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Point One - RC

Sensibly equivalent to:
210RC
See also:
Cossor RC Valves Advert - Cossor Point One and Stentor Valves
    
Extras ▼

 

The Cossor RC is from their Point One series. This series of dull emitter valves took just 100 mA of filament current. The catalogue Type designation of this valve is 610RC but this is not to be found on the valve itself.
The valve is heavily silvered from the magnesium gettering but at the top of the dome the silvering is absent allowing a view into the valve. The anode appears to be tapered at the top and twin tension coils suggest a double inverted V filament. This anode style was introduced as the length of the six volt 0.1 A filament was too long for a single inverted V. No grid supports are visible.
Cossor describe the valve on the label that runs around the base of the envelope as: specially designed for resistance capacity coupling.
The balloon envelope is 43 mm in diameter and, excluding the B4 base pins, is 97 mm tall.
References: 1043. Type Point One - RC was first introduced in 1927.

 

Pin Connections
B4
1
2
3
4
a
g1
f
f

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
6.0
0.1
120
Updated November 26, 2012.
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