CV1581 / VR99A / 10E/757
triode/hexode
 |
This valve measures 106x35mm
overall and has an octal base. |
This is an unmetallised version
of the ECH35.
| Heater voltage |
6.3V |
| Heater current |
300mA |
| Hexode section |
| Max anode voltage |
300V |
| Max screen voltage |
100V |
| Max anode dissipation |
1.2W |
| Anode current (see note
A) |
2.2mA |
| Conversion conductance
(see note A) |
650µA/V |
| Triode section |
| Max anode voltage |
150V |
| Max anode dissipation |
1.5W |
| Capacitances |
| Hexode Cag |
0.0035pF |
| Hexode Cae |
10.0pF |
| Hexode Cge |
4.8pF |
| Triode Cge |
8.4pF |
(Data from ECH35)
A: Measured at Va=300V, Vg2/4=100V,
Vg1=-4V, Vao=150V, Vgo=-3V
| Pin |
Function |
| 1 |
n/c |
| 2 |
Heater |
| 3 |
Hexode anode |
| 4 |
Screen grid (G2, 4) |
| 5 |
Oscillator grid (G0, 3) |
| 6 |
Oscillator anode (A0) |
| 7 |
Heater |
| 8 |
Cathode |
| TC |
Signal grid (G1) |
|
|
