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EF36

Sensibly equivalent to:
CV1056 CV1404 NR49 OM5 VR56
See also:
Evolution from EF36 & EF37 to EF37A - Stabilized Power Supplies - CV1056 short entry
    
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The EF36 is receiving pentode. Mullard specify this device as for general purpose voltage amplification and for use in phase inverters etc. This valve was obsolete by the 1960s, and our data sheets show that the EF36 had identical characteristics and pin connections to the EF37 and EF37A. The EF37A was particularly successful as a low noise low microphony AF voltage amplifier for high quality or Hi Fi use. These were all high gain low current audio frequency and intermediate frequency amplifiers in superhet receivers. With low capacitances they were useful at radio frequencies as well.
The classic envelope is 29 mm in diameter and, excluding the IO base pins, is 85 mm tall.
References: Datasheet, 1040 & 1043. Type EF36 was first introduced in 1940.

 

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

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.2
250
100
-2
3
0.8
2.5M
1.8
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 03, 2015.
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