Voltage - Triode (with diode, heptode or hexode) ·Diode-Diode-Triode
13DHA
Double-diode very-high-mu triode for radio detection and voltage amplification. The paired diodes perform signal and control-voltage rectification while the high-gain triode provides substantial amplification of the recovered signal.
- Sections
- 3
- Base
- -
- Socket code
- B7
- Base pins
- 7
- Nominal heater
- 13 V / 200 mA
Description
Indirectly heated double-diode triode for detection and automatic volume control.
Socket description
Medium 7-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B7
- Base pins
- 7
- Nominal heater voltage
- 13 V
- Nominal heater current
- 200 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
Triode
- Plate resistance
- 83300 Ω
- Transconductance
- 0.0015 S
- Amplification factor
- 125
- Max plate voltage
- 250 V
Published ratings and characteristics promoted from approved datasheet.
Section 2
Diode
No fixed ratings are recorded for this section.
Added approved missing physical diode section row.
Section 3
Diode
No fixed ratings are recorded for this section.
Added approved missing physical diode section row.
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.