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Rectifier - Half Wave ·Rectifier

1C7S

Russian directly heated high-voltage pulse rectifier.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
1.25 V / 200 mA

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
1.25 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

1 physical section, each with unique specifications.

Section 0

Rectifier

X-ray radiationInterelectrode capacitances
Rectifier peak inverse voltage
30000 V

HF pulse rectification; anode 100 V, current 4 mA; filament current range 0.18–0.22 A.

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

2026 Russian Receiving

Published operating points and test conditions from this source.

SECTION 0

Rectifier

Other

  • Peak inverse plate voltage total DC plus peak

    30000 V

    Maximum reverse anode voltage

  • Heater/filament voltage

    1.25 V

    Nominal filament voltage

  • Heater/filament current

    200 mA

    Filament current nominal; 0.18–0.22 A

Characteristic

  • Average plate current

    4 mA

    Anode current (not nominal rectifier output rating)