GM-70 (copper)
249,00 $
A very rare Russian audiophile GM-70 triode output tube with a copper anode. Manufacturer: ULYANOVSK. Excellent sound quality, high power! Almost equivalent to an 845 tube. NOS.
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6 in stock
The tube GM-70 modulator triode is designed to work as an amplifier of low-frequency oscillations in modulator circuits. The location is vertical. Cathode tungsten thoriated carbide direct heating. Anode – graphite.
Closest Equivalent: 845 tube (requires circuit modification as pinout and operating voltages, especially filament voltage (20V), are different from standard 845 tube).
- Stamp of technical control department of the manufacturer ” ОТК “
Technical specifications:
- Glow voltage: 20V
- Filament current: 3A
- Plate voltage: 1.5kV
- Cathode emission current: 800mA (plate voltage and grid potential = 180V)
- Long-dissipated anode power: 125W
- Differential transconductance: 6mA/V (plate voltage 600V and plate currents = 160mA, 260mA)
- Gain: 6.7 (plate voltages 1200V, 1000V and plate current 125mA)
- Dielectric resistance: 20MOhm
- Reverse grid current: 40μA
- Max glow voltage: 20V
- Min glow voltage: 19V
- Max plate voltage: 1.5kV
- Max long-dissipated anode power: 125W
- Max minute-dissipated anode power: 150W
Operating time not less than 1000 hours.
| Weight | 0,34 kg |
|---|---|
| Dimensions | 18,5 × 6,8 × 6,8 cm |
| Brand |
ULYANOVSK |
| Packaging |
Product from factory group packaging |
| Socket type |
4 – Pin PLK GM-70 |
| Condition |
New product |
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