Type | Substitutes | Base Diagram |
---|---|---|
1G3GT | 1G3-GTA, 1K3-A | |
Web References | 1G3GT (RCA (HB3)) @ Franks Electron Tubes 1G3GT (General Electric) @ Franks Electron Tubes 1G3GT (Tung-Sol) @ Franks Electron Tubes 1G3GT @ RadioMuseum.org |
Bulb | T-9 |
Base1 | B5-82 B5-85 Short Intermediate Shell Octal 5-Pin B6-8 Intermediate Shell Octal 6-Pin B6-60 Short Intermediate Shell Octal 6-Pin B7-47 Short Intermediate Shell Octal 7-Pin B7-166 Intermediate Shell Octal 7-Pin |
Cap | C1-34 |
Outline | 9-51 9-52 |
Basing2 | 3C |
Cathode | Coated Filament |
Mounting Position | Any |
Filament Voltage3 | 1.25 | Volts |
Filament Current | 200 | Ma |
Plate to Filament and Internal Shield | 1.3 | ��f |
Inverse Plate Voltage Total DC & Peak (Absolute Value) | 26,000 | Volts |
Inverse Plate Voltage DC | 21,000 | Volts |
Peak Plate Current | 50 | Ma |
Average Plate Current | 0.5 | Ma |
Peak-Inverse Plate Voltage (Absolute Value) | 33,000 | Volts |
Peak Plate Current | 30 | Ma |
Average Plate Current | 1.0 | Ma |
Minimum Frequency of Supply Voltage | 1.5 | Kc |
Maximum Frequency of Supply Voltage | 100 | Kc |
Tube Drop for Ib = 7 Ma (approx.) | 100 | Volts |
1 | On the 5-Pin bases, Pin 1 is omitted On the 5, 6 and 7-Pin bases JETEC B7-166, Pin 4 is Omitted On the 5, 6 and 7-Pin bases JETEC B7-47, Pin 6 is Omitted |
2 | Socket Terminals 1, 3, 4, 5, 6 and 8 may be connected to terminal 7 or to a corona shield which connects to terminal 7. Terminals 4 and 6 may be used as tie points for components at or near filament potential. |
3 | Under no circumstances should the filament voltage be less than 1.05 volts or more than 1.45 volts. |
4 | For operation in a 525-line, 30-frame system as described in "Standards of Good Engineering Practice for Television Broadcast Stations; Federal Communications Commission," the duty cycle of the voltage pulse must not exceed 15% of one scanning cycle. |