|
BEAM TETRODE
used for output
stages in power audio frequency amplifier.
Cathode: indirectly heated, oxide-coated.
| Uh, V | Ua, V | Ug1, V | Ug1true, V | Ug2, V | Uc-h | Ra, MOhm | Rg1, MOhm | |||
| Reverse 1st grid current | Ig1 | < 0.7 µA | 6.3 | 400 | -16.5 | - | 225 | - | - | 0.05 |
| Transconductance | S | > 8.5 mA/V | 6.3 | 400 | -16.5 | - | 225 | - | - | |
| Heater current | Ih | 1.5-1.7 A | 6.3 | - | - | - | - | - | - | |
| Anode current | Ia | 70-115 mA | 6.3 | 400 | -16.5 | - | 225 | - | - | |
| Second grid current | Ig2 | 2-4 mA | 6.3 | 400 | -16.5 | - | 225 | - | - | |
| Signal output power | Poutput | > 14 W | - | 400 | -16.5 | 11.7 | 225 | - | 3.0 | |
| Leakage current Cathode to Heater | Ic-h | < 30 µA | 6.3 | - | - | - | - | - | - | |
| Cut-off tension (on first grid, negative) | Ug1cut | 58 V max | 400 | # | - | 225 | - | - |