Tube-number record
5HP1-A
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5HP1-A is a tube type in the TubeDatabase archive (class: Cathode-Ray Tube). Recorded specifications: brand RCA, year 1945, construction Electrostatic Focus, Electrostatic Deflection, base Micanol, socket Magnal, and maximum plate voltage 2200 V. The archive does not yet hold a photographed example of this type.
BrandRCA
ClassCathode-Ray Tube
BaseMagnal
Filament6.3 V @ 600 mA
Construction
Primary TypeElectrostatic Focus, Electrostatic Deflection
EnvelopeGlass (5-1/4 Inch Bulb)
Base MaterialMicanol
Sections1
Filament / Heater
Heater NotesUnipotential Cathode
Absolute Maximum Ratings
Plate Voltage2200 V
Grid 2 Voltage2200 V
Grid 1 Voltage-125 V
Audio Performance
Key Features
- Electrostatic Focus
- Electrostatic Deflection
- Micanol Base for low-pressure environments
- Medium-Persistence Screen
- Improved electron gun
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| 1500V Operation | 1500 V | — | — | — | — |
| 2000V Operation | 2000 V | — | — | — | — |
Application Notes
Anode No. 1 takes essentially no current, permitting a smaller filter capacitance in the bleeder system. Avoid damage by ensuring Grid No. 1 voltage is near cutoff before applying anode voltages.
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