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ACV/P1

Sensibly equivalent to:
A50M AC/VP1 CV518 MVS-Pen VP4A VP4 VPT4B
See also:
Murphy Radio
    
Extras ▼

 

The ACV/P1 is also given in the literature as ACVP1 as Mazda write the Type designation of this vari-μ amplifier pentode in both ways. The AC/VP1 appearing on the earlier version with the screw top cap.
The zinc paint covers all but a small circle around the top cap.
The classic envelope is 39 mm in diameter, and excluding the B7 base pins is 105 mm tall.
References: 1040 & 1043. Type ACV/P1 was first introduced in 1934. See also 1934 adverts.

 

Pin Connections
B7
1
2
3
4
5
6
7
tc
m
g1
g3
h
h
k
g2
a

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
4.0
0.65
250
250
-2.8
8.8
2.2
1M
2.0
Updated August 01, 2025.
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