▼ Menu

RG1-240A

Sensibly equivalent to:
2V/301A AU6 CV1072 CV1626 ESU101 GU50 GU51 NU16 VU72
See also:
High Voltage Rectifiers Advert - CV1072 short entry - Audio Power Valves Advert
    
Extras ▼

 

The RG1-240A is a high voltage half wave rectifier. To deliver DC power to medium sized equipment, several would be operated together. Maybe six on a three phase supply.
Mercury vapour rectifiers of the GU1 class were introduced in the mid-1930s but, despite filling a real need, they became unpopular because they were troublesome in service. The RG1-240 was introduced in 1938 and the A variant some time later.
It took valve designers an amazingly long time to learn that the oxide-coated filament had to be shielded from the anode, that the anode-shield gap needed to be uniform and smoothly profiled, and that use of a thermal delay switch (e.g. DLS10) was essential. The RG1-240A is a later rectifier exemplifying these features. It was successful and widely used. Exhibit NU8 (equal to RG1-125) exemplifies an earlier, much less successful design which the Navy nevertheless went on using for years.
The maximum reservoir capacitor had to be limited to 5 µF.
The classic envelope is 44 mm in diameter and, excluding the B4 base pins, is 117 mm tall.
References: Datasheet, 1040 & 1043. Type RG1-240A was first introduced in 1938.

 

Pin Connections
B4
1
2
3
4
-
-
f
f

 

Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
Va
mAa
4.0
2.7
2,220
250
PDF scanned from an original document held by the museum
Updated October 15, 2016.
Return to Main Index