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U5

Sensibly equivalent to:
CV3743
See also:
Pioneers of HT Rectifiers
    
Extras ▼

 

The U5 has the distinction of being the first full wave rectifier. The U5 was introduced by the Marconi-Osram Valve company in 1926.
From the picture it can be seen that each filament is an inverted V and that the two filaments are connected in parallel. Each anode cavity is a flattened cylinder without any coating.
The balloon envelope is 52 mm in diameter and, excluding the B4 base pins, is 93 mm tall.
References: 1005 & 1043. Type U5 was first introduced in 1926.

 

Pin Connections
B4
1
2
3
4
a1
a2
f
f

 

Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
Va
mAa
5.0
1.6
400
60
Updated May 30, 2014.
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