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VP133

Sensibly equivalent to:
CV1457
    
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The VP133 is a variable-mu pentode for RF and IF amplification in broadcast superhet receivers. The 200 mA heater requirement and low anode voltage places the design use for this valve as universal mains receivers without a mains transformer. The variable-mu characteristic is designed so that the stage gain can be altered by virtue of altering the bias on the control grid. AGC systems would provide this variable bias according to the strength of the received signal.
The classic envelope is 32 mm in diameter and, excluding the MO base pins, is 89 mm tall.
References: Datasheet, 1040 & 1043. Type VP133 was first introduced in 1938.

 

Pin Connections
MO
1
2
3
4
5
6
7
8
tc
h
k
a
g2
g3
m
-
h
g1

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
13.0
0.2
150
150
-2.7
8.0
2.2
0.7M
2.1
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 02, 2013.
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