7233
The 7233 is a low-mu triode vacuum tube with a B9A (Noval) miniature 9-pin base, intended for use as series regulator in power supplies.
It is used in the 132 power supply.
Tek part number: 154-0307-00
Specifications
- 140 mA max, 7.5 W plate dissipation, -300V to +300V between heater and cathode
- Heater 6.3 V, 1 A