AC/TH1 triode/heptode
 |
This valve measures 120x38mm overall and has a B7 base. |
This is a triode/heptode frequency changer designed for use in mains
powered receivers.
| Heater voltage |
4V |
| Heater current |
1.3A |
| Heptode section |
| Max anode voltage |
250V |
| Max screen voltage |
250V |
| Mutual conductance (Va=250, Vg2=100, Vg1=2) |
3.1mA/V |
| Triode section |
| Max anode voltage |
150V |
| Max peak anode current |
15mA |
| Amplification factor |
16 |
| Mutual conductance (Va=100, Vg=0) |
5.3mA/V |
| Pin |
Function |
| 1 |
Oscillator anode |
| 2 |
Oscillator grid |
| 3 |
Screen grid |
| 4 |
Heater |
| 5 |
Heater |
| 6 |
Cathode and metallising |
| 7 |
Heptode anode |
| TC |
Heptode control grid |
|
 |
