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GU-50 = LS50 tube. Audiophile Pentodes |
Product description
Datasheets
Other Info
Description
The GU-50 pentode is used as a RF oscillator and power amplifier in the metric wavelength range in RF equipment
GENERAL
Cathode: indirectly heated, oxide-coated.
Envelope: glass, no-base.
Height: at most 93.5 mm.
Diameter: at most 45.3 mm.
Mass: at most 100 g
| OPERATING ENVIRONMENTAL CONDITIONS | |
| Ambient temperature, °C | -10 to +55 |
| Relative humidity at up to +25 °C, % | 98 |
| BASIC DATA Electrical Parameters |
|
| Heater voltage, V | 12.6 |
| Heater current, A | 0.6-0.85 |
| Mutual conductance (at anode voltage 800 V, grid 2 voltage 250 V, grid 1 voltage increment 5 V, anode current 50 mA), mA/V |
3-5.5 |
| Bias voltage at operating point, V | 25-55 |
| Penetration factor of grid 1 relative to grid 2, % | 16-26 |
| Interelectrode capacitance, pF: | |
| input, at most | 13-15 |
| output, at most | 10.3 |
| transfer, at most | 0.1 |
| Output power, W, max.: | |
| at anode voltage 800 V, grid 2 voltage 250 V, grid 1 voltage -100 V, anode current, at most 150 mA | 55 |
| over 1,750 h of service | 40 |
| Limit Operating Values | |
| Heater voltage, V | 11.3-13.9 |
| Anode voltage at different wavelengths, V: | |
| 6.5 m or longer | 1,000 |
| 6.5-4.5 m | 800 |
| 4.5-3.5 m | 700 |
| 3.5-2.5 m | 600 |
| Grid 2 voltage, V | 250 |
| Voltage between cathode and heater, V | 200 |
| Dissipation, W: | |
| anode | 40 |
| grid 2 | 5 |
| grid 1 | 1 |
| Envelope temperature, °C | 200 |
1.jpg)
Averaged Anode-Grid 2 Characteristic Curves:
Uf = 12.6V; Ug2 = 250V; Ug3 = 0
2.jpg)
Averaged Grid 2-Anode Characteristic Curves:
Uf = 12.6V; Ug2 = 250V; Ug3 = 0
3.jpg)
Averaged Characteristic Curves:
Uf = 12.6V; Ug2 = 500V; Ug3 = 0
_____ anode-grid;
- - - grid 2
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