Data set 01
1940 RCA
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Application
Application
PulseModulator text
Power - Beam (NOT sweep) ·BeamPower
6293
Pulse-rated beam-power tube intended for high-current pulse amplifier or switching service, emphasizing short-duration peak voltage and current rather than continuous output.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 7CK
- Socket code
- IO
- Base pins
- 8
- Nominal heater
- 6.3 V / 1.25 A
Description
The RCA 6293 is a beam power tube intended for rectangular-wave pulse-modulator service, with pulse plate voltages up to 4 kV.
Socket description
International Octal
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 7CK
- Socket code
- IO
- Base pins
- 8
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 1.25 A
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
7CK - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1G3 | A | G3 — Suppressor GridGroup 7CK1 Source label G3; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7CK |
| PIN1K | A | K — CathodeGroup 7CK1 Source label K; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7CK |
| PIN2H | — | H — Heater Source label H; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7CK |
| PIN3G2 | A | G2 — Screen Grid Source label G2; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7CK |
| PIN4G3 | A | G3 — Suppressor GridGroup 7CK4 Source label G3; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7CK |
| PIN4K | A | K — CathodeGroup 7CK4 Source label K; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7CK |
| PIN5G1 | A | G1 — Control Grid Source label G1; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7CK |
| PIN6G3 | A | G3 — Suppressor GridGroup 7CK6 Source label G3; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7CK |
| PIN6K | A | K — CathodeGroup 7CK6 Source label K; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7CK |
| PIN7H | — | H — Heater Source label H; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7CK |
| PIN8SH | A | SH — Internal Shield Source label SH; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7CK |
| CAP1P | A | P — Plate (Anode) Source label P; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7CK |
Section ratings
1 physical section, each with unique specifications.
Section 1
Beam Power
X-ray radiationInterelectrode capacitances
- Transconductance
- 0.007 S
- Amplification factor
- 4.5
- Max plate voltage
- 3500 V
- Max screen voltage
- 500 V
- Max plate dissipation
- 10 W
Representative electrical section from supplied RCA data sheet.
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
1956 RCA Transmitting Tubes
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
DC Plate Supply Voltage Maximum
3500 V
DutyFactor<=0.003
Instantaneous Plate Voltage Maximum
4000 V
DutyFactor<=0.003
Peak Plate Current Maximum
3.5 A
DutyFactor<=0.003
Plate Dissipation Maximum
10 W
Duty Factor Maximum
1 ratio
Reduced peak-current operation
Data set 03
1971 RCA HB3 Binder 6 of 7
Published operating points and test conditions from this source.
SECTION 1
Beam Power
Other
Heater/filament voltage nominal
6.3 V
WholeTube
Heater/filament current
1.25 A
WholeTube
Voltage (AC or DC)
6.3 %
Published source row
Voltage (AC or DC) (value 2)
10 %
Published source row
Current at heater volts =
6.3 V
Published source row
Current at heater volts = (value 2)
1.25 V
Published source row
Transconductance, for plate volts =
200 V
Published source row
grid-No
2 V
Published source row
grid-No (value 2)
200 V
Published source row
Mu-Factor, Grid No
2
Published source row
Mu-Factor, Grid No (value 2)
1
Published source row
plate volts =
200 V
Published source row
plate volts = (value 2)
2 V
Published source row
INSTANTANEOUS PLATE VOLTAGE i1
5 V
Published source row
DC GRID—No
2 V
Published source row
DC GRID—No (value 2)
500 V
Published source row
DC GRID—No
1 V
Published source row
DC GRID—No (value 2)
300 V
Published source row
GRID—N o
1
Published source row
PEAK GRID—No
2 A
Published source row
PEAK GRID—No (value 2)
750 mA
Published source row
PEAK GRID—No.l CURRENT
500 mA
Published source row
Heater negative with respect to cathode
135 V
Published source row
Heater positive with respect to cathode
135 V
Published source row
DC Plate Supply Voltage
3000 V
Published source row
DC Grid—No
2 V
Published source row
DC Grid—No (value 2)
300 V
Published source row
DC Grid—No.l Supply Voltage —
175 V
Published source row
Peak Positive Grid—No
1 V
Published source row
Peak Positive Grid—No (value 2)
65 V
Published source row
DC Grid—N o
2 A
Published source row
DC Grid—N o (value 2)
0 mA
Published source row
DC Grid—N o (value 3)
4 A
Published source row
DC Grid—No
1 A
Published source row
DC Grid—No (value 2)
2.5 mA
Published source row
Load Resistance (RL),
100 W
Published source row
Grid—N o.l—Circuit Resistance
30000 ohm
Published source row
used in the plate suDD1y circuit, the grid-No
2
Published source row
Characteristic
Grid No
1 pF
Published source row
Grid No (value 2)
0.24 pF
Published source row
internal shield, grid No
2
Published source row
sleeve, and heater
13 pF
Published source row
ternal shield, grid No
2
Published source row
sleeve, and heater
8.5 pF
Published source row
Heater Current
1 A
Published source row
Heater Current (value 2)
1.175 A
Published source row
Heater Current (value 3)
1.325 A
Published source row
Grid No
1 pF
Published source row
Grid No (value 2)
2 pF
Published source row
Grid No (value 3)
0.24 pF
Published source row
& internal shield, grid No
2
Published source row
base sleeve, and heater
2 pF
Published source row
base sleeve, and heater (value 2)
12 pF
Published source row
base sleeve, and heater (value 3)
15 pF
Published source row
internal shield, grid No
2
Published source row
base sleeve, and heater
2 pF
Published source row
base sleeve, and heater (value 2)
7.3 pF
Published source row
base sleeve, and heater (value 3)
9.5 pF
Published source row
Plate Current
3 mA
Published source row
Plate Current (value 2)
46 mA
Published source row
Plate Current (value 3)
94 mA
Published source row
Grid—No
2 mA
Published source row
Grid—No (value 2)
3 mA
Published source row
Grid—No (value 3)
0 mA
Published source row
Grid—No (value 4)
5.5 mA
Published source row
Peak Plate Current
1.4 A
Published source row
Peak Plate Current (value 2)
2.4 A
Published source row
Note
3 V
Published source row
Note (value 2)
6.3 V
Published source row
Note (value 3)
300 V
Published source row
g n tl-N o
2
Published source row
g n tl-N o (value 2)
200
Published source row
g n tl-N o (value 3)
-33
Published source row
conditions: rectangular-wave modulation applied to grid No
1
Published source row
pulse duration of
1
Published source row
of
3000 V
Published source row
of (value 2)
2000 V
Published source row
grid No
2
Published source row
grid No (value 2)
500
Published source row
age of
-300 V
Published source row
age of (value 2)
1 V
Published source row
age of (value 3)
100 V
Published source row
Ecc2: Grid-No
2 V
Published source row
Ecc2: Grid-No (value 2)
5 V
Published source row
Ecc2: Grid-No (value 3)
1000 V
Published source row
Eb h: Plate Supply Voltage R
6 ohm
Published source row
Eb h: Plate Supply Voltage R (value 2)
10000 ohm
Published source row
Eb h: Plate Supply Voltage R (value 3)
50 ohm
Published source row