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80

Sensibly equivalent to:
4274A CV617
See also:
Hytron 80 Box
    
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The type 80 led standard practice it was the landmark full-wave rectifier and (we think) the first mass-produced rectifier to use oxide-coated tape filaments when introduced by RCA.
See 80 for full details of the design of this standard rectifier.
The maximum reservoir capacitor is 32 µF and the minimum series resistance, to limit current, is 30 Ohms.
One of the anodes face view, the filament forms an inverted V within the space.
The Hytron brand is moulded into the Bakelite base shell.
The two vertical rods are the supports for the filament tension springs. The folded and carbonised anodes are stitched together and the flange enclosing the support also helps dissipate heat.
The top mica showing the filament ribbon and the tension springs.
The classic envelope is 45 mm in diameter and, excluding the UX4 base pins, is 100 mm tall.
References: Datasheet, 1040 & 1043. Type 80 was first introduced in 1936.

 

Pin Connections
UX4
1
2
3
4
f+
a(2)
a(1)
f-

 

Absolute Maximum Operating Conditions
Rectifier
Vh
Ah
Va
mAa
5.0
2.0
350
125
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 04, 2013.
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