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DDR100

Special double diode with elastically supported anodes whose impedance changes with acceleration, designed as an electrical accelerometer transducer for bridge measurement.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / -

Description

The Mullard DDR100 is a special double diode whose elastically supported anodes vary impedance with acceleration, allowing bridge-circuit acceleration measurement.

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: 6.3 V
Nominal heater current: -
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

X-ray radiationInterelectrode capacitances

Rectifier nominal output current: 60 mA

Representative of two mechanically responsive diode sections.

Section 2

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Physical diode section added during approved section-structure reconciliation.

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 01

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristics

Heater Voltage
6.3 V
Warmup Time
15 min
Resonant Frequency
1 kHz
Approximate
Sensitivity
7.5 mV/g
BridgeCircuit
Flat Response Frequency Minimum
0 Hz
Flat Response Frequency Maximum
250 Hz

Other

Maximum Bridge Supply Voltage
10 V
Maximum Diode Current
60 mA
Maximum Acceleration
100 g