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6X5G

Sensibly equivalent to:
CV572 EZ35 U147 U70 VT-126A
See also:
CV572 short entry
    
Extras ▼

 

The 6X5G full wave rectifier for use in equipment with an HT requirement of up to 70 mA. The valve is also rated for pulse operation. In the latter case the maximum peak inverse volts is 1.25 kV.
Rob comments that the main advantage of the 6X5G rectifier is the heater/cathode insulation that allows the heater to be run from the same winding as the rest of the valves, whereas most HT rectifiers require a separate winding.
This exhibit was originally located in an Air Ministry VHF Wavemeter and re-purposed for audio amplifier service.
The stacked anodes.
Each anode is formed as a cross with the short arms going to the support rods and the longer arms being made into open cylinders. The cathode runs vertically through the centre.
The Crown and AM for the UK Air Ministry.
In normal use the maximum reservoir capacitor is limited to 4 µF and the minimum series resistance has to be 150 Ohms. The maximum value of reservoir capacitor is given as 32 μF and the peak cathode current is 210 mA.
See also 6X5 and 6X5GT.
The classic envelope is 38 mm in diameter and, excluding the IO base pins, is 89 mm tall.
References: Datasheet, 1040 & 1043. Type 6X5G was first introduced in 1936.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
m
h
a(2)
-
a(1)
-
h
k

 

Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
Va
mAa
6.3
0.6
325
70
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 16, 2018.
shape:classic construction:pinch type:rectifier.fw age:1930.1940 base:io heater:6.3v pins:8 pin:1.m pin:2.h pin:3.a(2) pin:4.- pin:5.a(1) pin:6.- pin:7.h pin:8.k
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