Alternatives & variations Download PDF datasheet

Specialized - Thyratron ·Thyratron

CV797

Gas-filled grid-controlled thyratron for switching, controlled rectification, industrial control, timing, relay, or pulse service.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: B7G
Socket code: -
Base pins: 7
Nominal heater: 6.3 V / 600 mA

Description

4G280K miniature thyratron. Technical characteristics, ratings, and operating information are provided in the approved Standard Valves datasheet.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: B7G
Socket code: -
Base pins: 7
Nominal heater voltage: 6.3 V
Nominal heater current: 600 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

B7G - 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

Thyratron

X-ray radiationInterelectrode capacitances

Max cathode current: 500 mA
Rectifier peak inverse voltage: 1300 V

Ratings and characteristics extracted from 4G280K.pdf.

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

1946 Standard Telephone and Cables

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

Heater voltage
6.3 v
Nominal curren
600 mA
Cathode heating time, minimum
10 sec
Grid to anode
0.026 pF
Inpu
2.4 pF
Outpu
1.6 pF
conduction
-100 v
before conduction
-100 v
Maximum peak cathode curren
500 mA
Maximum average cathode curren
100 mA
Maximum fault curren
10 A
Maximum duration of fault curren
0.1 sec
Maximum average screen curren
10 mA
Maximum average control grid curren
10 mA
cathode
25 v
Anode voltage (r.m.s.) 117
400 v
Direct screen grid voltage 0
0 v
Direct control grid voltage —
-6 A
Peak control grid signal voltage 5
3 v
~ 2021 AVERAGE GRID CHARACTERISTICS |Vh=
6.3 V
< BEFORE ANODE CONOUCTION. Ve
0 V
E B
300 V
Y_0-02
400 V
2D 2 AVERAGE GRID CHARACTERISTICS|Vh=
6.3 V
HIT Vh
63 V
life for heater voltage range of 5.7 to
6.9 Volts

Characteristic

Deionization . {v 125M\735u\;Ed
100 v
me, approx Rg; 1000 0
10.1 A
Va 125V1 Vg, —
10 V
Rg11000Q I
100 mA
Critical grid With V,
460 V
current, max. la av
100 mA
Voltage drop, approx
8 v