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DU10

 
See also:
Mullard DU10 Box
    
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The DU10 is a directly heated half wave rectifier from Mullard that was introduced in 1929. The valve has only three pins. The base pattern is the British four pin B4 and the control grid pin (pin 2) is omitted.
The envelope markings are etched. The rear shows the requirement for a four Volt filament supply.
The base: the anode pin is marked with an A.
The balloon envelope is 51 mm in diameter, and excluding the B4 base pins is 115 mm tall.
References: Datasheet & 1004. Type DU10 was first introduced in 1929.

 

Pin Connections
B4
1
2
3
4
a
-
f
f

 

Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
Va
mAa
4.0
1.0
250
75
PDF scanned from an original document held by the museum
Updated January 07, 2013.
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