Voltage - Triode (with diode, heptode or hexode) ·Diode-Triode
DAC21
Battery diode-triode combining signal detection with subsequent audio-frequency amplification. The diode performs detector action while the triode amplifies the recovered signal within the same envelope.
- Sections
- 2
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 1.4 V / 50 mA
Description
DAC21 is a battery diode-triode for detector and af service. The supplied datasheet was read across its ratings, characteristics, operating information, and capacitance/deflection data where legible.
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater voltage
- 1.4 V
- Nominal heater current
- 50 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
2 physical sections, each with unique specifications.
Section 1
Diode
No fixed ratings are recorded for this section.
Battery diode-triode for detector and AF service
Section 2
Triode
No fixed ratings are recorded for this section.
Battery diode-triode for detector and AF service
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.