▼ Menu

EL35

Sensibly equivalent to:
6L6G CV1286 NR77
See also:
CV1286 short entry
    
Extras ▼

 

The EL35 is a larger more powerful audio pentode than the small receiver types and was intended for use in class AB. The EL35 was used for audio amplifiers and modulators for small Amplitude Modulated transmitters. As a single ended audio stage the valve would deliver 6 Watts and in push pull a pair would form an amplifier capable of generating 21 Watts in class AB. The design dates to the early 1940's.
This is another EL35 but with less internal shielding allowing the electrodes to be seen.
The central cathode has three inverted V's of insulated heater inside. The control grid is wound on copper supports and topped off with heat sink fins. The top mica has its fingers bent down showing the interferance fit into the envelope bulb.
The classic envelope is 41 mm in diameter, and excluding the IO base pins is 105 mm tall.
References: Datasheet, 1040 & 1043. Type EL35 was first introduced in 1945.

 

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

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
Pout
D
6.3
1.35
250
250
-15.5
72
8.0
15,500
5.0
6W
10%
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated November 03, 2016.
Return to Main Index