Data set 01
1957 Philips Receiving and Amplifying Tubes
Published operating points and test conditions from this source.
SECTION 1
Diode
Application
Application
Signal detection
SECTION 2
Pentode
Application
Application
Audio output
Power - Pentode (NOT beam) ·Diode-Diode-Pentode
UBL1
Double-diode/power-pentode combination for radio detection and final audio-output service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 3
- Base
- -
- Socket code
- IO
- Base pins
- 8
- Nominal heater
- 55 V / 100 mA
Description
Double-diode output pentode for detector and audio-output service.
Socket description
International Octal
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- IO
- Base pins
- 8
- Nominal heater voltage
- 55 V
- Nominal heater current
- 100 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
3 physical sections, each with unique specifications.
Section 1
Diode
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Two identical diode systems; represented once under identical-section compression.
Section 2
Pentode
X-ray radiationInterelectrode capacitances
- Max plate voltage
- 250 V
- Max screen voltage
- 250 V
- Max plate dissipation
- 11 W
Published Philips ratings and characteristics promoted where applicable; additional data retained as parameters.
Section 3
Diode
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.