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DAC32

Sensibly equivalent to:
1H5 1H5GT CV1820 HD14
    
Extras ▼

 

The mid 1940's DAC32 is a dry battery diode triode that was designed for AM broadcast radio reception. Mullard describe this valve as a medium gain triode for use as an AF voltage amplifier combined with a single diode for signal or AVC (AGC) rectification.
The filament power is very low and consequently the valve is rated for a very low current.
The triode section is at the top and the diode is the rectangular box below. The single thread filament passes centrally between the two sections.
The wide glass tube envelope is 30 mm in diameter and excluding the IO base pins it is 85 mm tall.
References: Datasheet, 1040 & 1043.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
tc
m
f+
a
-
a(d)
-
f-
-
g1

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
mAa
ra
gm
1.4
0.05
90
0.15
240k
0.275
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 27, 2013.
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