The U147 is a standard full wave HT rectifier for low power AC mains driven equipment. The output of a centre tapped transformer would be applied to the anodes, the rating given is 325-0-325, the common cathode would be the output for the rectified voltage. A effective series resistance of 350 Ohms was required to limit surges and the reservoir capacitor had to be restricted to 16 µF. The valve has two anodes stacked vertically on a common cathode tube.
The wide glass tube envelope is 29 mm in diameter and excluding the IO base pins the valve is 77 mm tall.
Pin Connections
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
|
m |
h |
a(2) |
- |
a(1) |
- |
h |
k |
Absolute Maximum Operating Conditions
|
Vh |
Ah |
Va |
mAa |
|
6.3 |
0.6 |
325 |
70 |
This exhibit was last updated on 13 August 2005 |
|
