| CV172 noise diode
 |
The valve measures 70x36mm
overall and has a B9G base |
The prototype for this valve
is E1468.
| Normal filament voltage |
6V |
| Mean filament current |
1A |
| Mean saturated anode current |
18mA |
| Max permissible filament
voltage |
7V |
| Approx spread of Vf over
a number of valves for Ia (saturated) |
6.25 to 6.75V |
Saturation occurs with an anode
voltage not greater than 50V. At a filament voltage of 7V the life of
the valve is reduced to 100 hours. The value of the saturated anode current is
normally regulated by variation of filament voltage.
| Pin |
Function |
| 1 |
Filament |
| 2 |
Anode |
| 3 |
Anode |
| 4 |
n/c |
| 5 |
(filament spring) |
| 6 |
n/c |
| 7 |
Anode |
| 8 |
Anode |
| 9 |
Filament |
|
