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Shuguang Electronic Tube 811A FU-811 FU811J New Medical Amps for Ultrashort Wave Apparatus Physiotherapy Instrument
Description:
811 is similar to 811A. Can be used either.
Filament heating:
Uf - 6.3V ; If - 4A
Limit value:
- Anode voltage: 1250V
- Anode current: 125mA
- Heating negative voltage: 40V
- Gate current: 50mA
Operating frequency and positive voltage:
When the frequency is above 300MC, the adjustment between positive voltage and input power is as follows:
| Operating Frequency(MC) | Anode voltage and anode input power |
| 60 | 89% |
| 80 | 70% |
| 100 | 55% |
When working continuously, no light red.
Capacitor:
- Input capacitor : 5.5PF
- Output capacitor: 0.6PF
- Cross circuit capacitor: 5.5PF
Static parameter:
- Ua: 2000V
- Ug: 2V
- Ia: 26mA
- Gm: 1.25mA/V ; 1.6mA/V
- muon: 160
Limit value:
| CCS | ICAS | ||
| Ua | 1250 | 1500 | V |
| Ia(max, sig) | 175 | 175 | mA |
| Pa | 45 | 65 | W |
| Pa (in) (max,sig) | 165 | 235 | W |
Recommended operating state:
| CCS | ICAS | ||
| Ua | 1250 | 1500 | V |
| Ug | 0 | -4.5 | V |
| Ia (0) | 50 | 32 | mA |
| Ia (max, sig) | 260 | 313 | mA |
| Ug (pk) | 145 | 170 | V |
| Pd (max, sig) | 3.8 | 4.4 | W |
| RL (a-a) | 12.4 | 12.4 | kOhm |
| Pout (max, sig) | 235 | 340 | W |
Other working conditions for the ultimate ratings:
Package included:
- 1 x Shuguang Electronic Tube 811A FU-811 FU811J
