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GU-50 = LS50 tube. Audiophile Pentodes

Manufacturers: Ulyanovsk, Russia
In Stock: 0
Price:
$4.00
Out of stock
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

gu-501.jpg

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

gu-50(2)1.jpg
Averaged Anode-Grid 2 Characteristic Curves:
Uf = 12.6V; Ug2 = 250V; Ug3 = 0

gu-50(2)2.jpg
Averaged Grid 2-Anode Characteristic Curves:
Uf = 12.6V; Ug2 = 250V; Ug3 = 0

gu-50(2)3.jpg
Averaged Characteristic Curves:
Uf = 12.6V; Ug2 = 500V; Ug3 = 0
_____ anode-grid;
- - - grid 2

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