Data set 01
1953 RFT Rundfunk Technik
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Characteristic
GridCurrentMaximum
0.0000000005 mA
Application
Application
Electrometer text
Voltage Pentode or Tetrode (under 100V) ·Tetrode
T113
Directly heated electrometer tetrode using a space-charge grid for extremely low-current measurement, with very low grid current and explicit precautions concerning insulation, vibration, and ionization.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 3 V / 100 mA
Description
The T113 is a directly heated electrometer tube using a space-charge grid. Its normal operating point is around 10 V plate and space-charge-grid voltage, with very small grid current and explicit precautions for insulation, vibration and ionization effects.
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
- 3 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
1 physical section, each with unique specifications.
Section 1
Tetrode
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.00017 S
- Amplification factor
- 2.5
- Max plate voltage
- 12 V
- Max screen voltage
- 12 V
Electrometer tetrode with control and space-charge grids.
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.
Data set 02
1959 Telefunken
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Other
Plate voltage
10 V
NormalOperatingPoint
Space-charge-grid voltage
10 V
NormalOperatingPoint
Control-grid bias
-3 V
NormalOperatingPoint
Plate current
0.24 mA
NormalOperatingPoint
Maximum space-charge-grid voltage
12 V
Characteristics
Penetration factor
55 %
NormalOperatingPoint
Grid current
<6e-8 A
NormalOperatingPoint