3C18P

Russian high-voltage kenotron designed specifically to convert line-scan flyback pulses to DC in television receivers, generating the elevated supply used for CRT accelerating voltage.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: B9A
Base pins: 0
Nominal heater: 3.15 V / -

Description

The 3C18P is a high-voltage kenotron for converting line-scan flyback pulses to DC in television receivers.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: B9A
Base pins: 0
Nominal heater voltage: 3.15 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

1 physical section, each with unique specifications.

Section 1

Rectifier

X-ray radiationInterelectrode capacitances

Plate resistance: 15000 Ω
Rectifier peak inverse voltage: 25000 V
Rectifier nominal output current: 1.5 mA
Rectifier peak forward current: 15 mA
Rectifier warm-up time: 15 s

Electrical values extracted only from the filename-designated tube block; page-edge fragments excluded.

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

195X Russian

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

Anode voltage
100 V
Published test point
Anode current
8 mA
Published test point
Output capacitance
1.5 pF
Published value
Warm-up time
15 s
Published value

Other

Peak reverse anode voltage
25 kV
Pulse
Peak anode current
15 mA
Pulse
Rectified current
1.5 mA
Average
Pulse repetition frequency
10 to 300 kHz
Published range

Data set 02

1981 Russian Tubes Katsnelson and Larionov

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristics

Rectified current
1.1 mA
Выпрямленный ток (при Ооср=35 кВ, {=16 кГц) й 1,1 мА
Anode-cathode capacitance
1.5--0.4 pF
Емкость между анодом и катодом . . . . й 1,5--0,4 пФ
Service life
>750 h
Наработка . . . . . . . . . . .Ё ., 2>750 ч
Plate current
>8.6 mA
ток анода (при (0,=120 В) . . . .. .. >8,6 мА
Rectified current
11 mA
Выпрямленный ток (среднее значение) Кв 11 мА
Plate current
80 mA
Ток анода в импульсе . . . . .. .. .. ‚ 80 мА
Plate current
28 mA
Ток анода . . ‚ 28 мА
Rectified current
1.5 mA
Выпрямленный ток (при иобр—'25 кВ і=16 кГц) ‚ 1,5 мА
Plate resistance
<15 kΩ
Внутреннее сопротивление . . < 15 кОм
Service life
>1250 h
Наработка. ‚ . г ж в вяавево, > 1250 ч
Plate current
16 mA
Ток анода в импульсе . . , . ке 16 мА
Plate current
>4.5 mA
Ток анода . . . МН >4,5 мА
Capacitance
5 pF
Емкость между катодом и анодом ‚ <?,5 пФ
Service life
>1500 h
Наработка . . . К, 2>1500 ч

Other

Reverse voltage
85 kV
Обратное напряжение . . . з ее , 85 кВ
Reverse voltage
95 kV
Обратное напряжение . . . Ф.а 95 кВ