Tube-number record
3QP1
0 archive entries
3QP1 is a tube type in the TubeDatabase archive (class: Oscilloscope Cathode Ray Tube). Recorded specifications: brand North American Philips Co., Inc., construction Display / CRT, socket Loctal, and maximum plate voltage 1500 V. The archive does not yet hold a photographed example of this type.
BrandNorth American Philips Co., Inc.
ClassOscilloscope Cathode Ray Tube
BaseLoctal
Filament6.3 V @ 300 mA
Construction
Primary TypeDisplay / CRT
EnvelopeGlass
Sections1
Filament / Heater
Heater NotesHeater current extracted as 0.3A from OCR text (standard is often 0.6A)
Absolute Maximum Ratings
Plate Voltage1500 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Eb2 = 1000V | 1000 V | — | — | — | 0.25 mA |
| Eb2 = 1200V | 1200 V | — | — | — | 0.25 mA |
Application Notes
Positive voltage on D1 deflects beam toward Pin 7; positive voltage on D3 deflects beam toward Pin 5.
Datasheets
Datasheet: 3QP1.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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