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AC/P

Sensibly equivalent to:
CV1179 CV2815 ML4 NR57
See also:
1929 Advert - 1931 Advert
    
Extras ▼

 

This example of the AC/P has the classic envelope and is of later production than AC/P with the balloon envelope. It was probably made much later than 1930 and produced for replacement purposes, rather than for new radios.
Although the envelope is partially opaque the internal structure can be seen. The cathode is flat, and the whole electrode structure is smaller than the original.
The carton describes the AC/P for use as an LF amplifier or output valve. The cathode is indirectly heated making it suitable for operation on alternating current supply.
As an output valve the power available was up to 640 mW.
The classic envelope is 42 mm in diameter and, excluding the B5 base pins, is 93 mm tall.
References: Datasheet, 1040 & 1043. Type AC/P was first introduced in 1929.

 

Pin Connections
B5
1
2
3
4
5
a
g1
f
f
k

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
4.0
1.0
200
-12
20.0
2650
3.75
PDF scanned from an original document held by the museum
Updated January 31, 2013.
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