Data set 01
1962 Eimac
Published operating points and test conditions from this source.
Triode
Characteristics
The Eimac 3C24 is a medium-mu, power triode intended for use as an amplifier, oscillator or
3 a
| The Eimac 3C24 is a medium-mu, power triode intended for use as an amplifier, oscillator or
modulator. It has a maximum plate dissipation rating of 25 watts and can be opsrated at its maximum
25 a
| modulator. It has a maximum plate dissipation rating of 25 watts and can be opsrated at its maximum
Voltage
63 volts
GeneralCharacteristics | Voltage - - - - - - - . - 63 volts
Current
3 amperes
GeneralCharacteristics | Current - - - - R - - - - 3.0 amperes
Amplification Factor (Average)
24
GeneralCharacteristics | Amplification Factor (Average) . - - - - - - - 24
Grid-Plate
1.6 ppuf
GeneralCharacteristics | Grid-Plate - - - - . . - - 1.6 ppuf
Transconductance (i, =25 ma., E,=1000v.]
25 ma
GeneralCharacteristics | Transconductance (i, =25 ma., E,=1000v.] - . N - 2500 umhos
Other
Length
4.38 inches
| Length - - - - - - - - - - - - - - - - - - - - - 4.38 inches
Diameter
1.44 inches
| Diameter - - - - - - - - - - - - - - - - - - - - 1.44 inches
Net Weight
1.5 ounces
| Net Weight - - - - - - - - - - - - - - - - - - - - - - 1.5 ounces
Shipping Weight [Average}
1 pound
| Shipping Weight [Average} - - - - - - - - - - - - - - - - - - - 1.0 pound
AND MODULATOR D-C Plate Volfaqc
750 Volts
TYPICAL OPERATION, CLASS AB, | AND MODULATOR D-C Plate Volfaqc - - 750 1000 1250 Volts
D-C Grid Yoltage (approx ) o
20 Volts
TYPICAL OPERATION, CLASS AB, | D-C Grid Yoltage (approx ) o - - —20 —30 —42 Volts
Class-B and AB Zero-Signal D-C Plate Current
4 ma
TYPICAL OPERATION, CLASS AB, | Class-B and AB Zero-Signal D-C Plate Current - - 4 ;Z 24 ma.
Max-Signal D-C Plate Current
127 Ma
TYPICAL OPERATION, CLASS AB, | Max-Signal D-C Plate Current - - 127 127 130 Ma.
A N N R _ Peak A-F Grid Input Yoltage (per fubo) 10 120 135 Volts
10 A
MaximumRatings | A N N R _ Peak A-F Grid Input Yoltage (per fubo) 10 120 135 Volts
D-C PLATE VOLTAGE 2000 MAX. VOLTS Max-Signal Peak Driving Power
2000 VOLTS
MaximumRatings | D-C PLATE VOLTAGE 2000 MAX. VOLTS Max-Signal Peak Driving Power - 5.5 60 6.8 Watts
MAX-SIGNAL D-C PLATE CURRENT
75 MA
MaximumRatings | MAX-SIGNAL D-C PLATE CURRENT - - 75 MAX. MA, Max-Signal Nominal Drlvmq Power 28 10 R w
PLATE DISSIPATION
25 WATTS
MaximumRatings | PLATE DISSIPATION - - . - . . 25 MAX. WATTS Max- S|gnal Plate Power Output - - 0 85 12 Watts
GRID DISSIPATION
7 WATTS
MaximumRatings | GRID DISSIPATION - - - 7 MAX. WATTS *Adjust to give stated zero-signal plate current,
D-C Plate Voltage
1000 Volts
PLATE MODULATED RADIO TYPICAL OPERATION- | D-C Plate Voltage - - - - 1000 1250 1600 Volts
FREQUENCY AMPLIFIER D-C Plate Current
0 Ma
PLATE MODULATED RADIO TYPICAL OPERATION- | FREQUENCY AMPLIFIER D-C Plate Current - - - . - 0 ] 53 Ma.
D.-C Grid Voltage
120 Volts
PLATE MODULATED RADIO TYPICAL OPERATION- | . . D.-C Grid Voltage - - - - - —120 —40 —I70 Volts
Class-C Telephony (Carrier conditions, per tube) . D-C Grid Current . B B . 14 13 11 Ma
14 Ma
PLATE MODULATED RADIO TYPICAL OPERATION- | Class-C Telephony (Carrier conditions, per tube) . D-C Grid Current . B B . 14 13 11 Ma.
v . R N R N v Grid Dissipation
1.6 v
MaximumRatings | . v . R N R N v Grid Dissipation - - - - - 1.6 1.5 1.2 Watts
D-C PLATE VOLTAGE 1600 MAX. VOLTS Plate Power Input
1600 VOLTS
MaximumRatings | D-C PLATE VOLTAGE 1600 MAX. VOLTS Plate Power Input - - - - - 60 75 85 Watts
D-C PLATE CURRENT
60 MA
MaximumRatings | D-C PLATE CURRENT - - - - - 60 MAX. MA. Plate Dissipation - - - - - I3 15 17 Watts
PLATE DISSIPATION
17 WATTS
MaximumRatings | PLATE DISSIPATION - - . - . . 17 MAX. WATTS PlateThePower Output . . - . - a7 40 68 Watts
GRID DISSIPATION
7 WATTS
MaximumRatings | GRID DISSIPATION - - - 7 MAX. WATTS allow for variations in circuit losses.
D-C Plate Voltage
1000 Volts
RADIO FREQUENCYPOWER AMPLIFIER TYPICAL OPERATION- | D-C Plate Voltage - - - - 1000 1500 2000 Volts
AND OSCILLATOR D-C Plate Current
7 Ma
RADIO FREQUENCYPOWER AMPLIFIER TYPICAL OPERATION- | AND OSCILLATOR D-C Plate Current - - - - - 7 4] 63 Ma,
Class-C Telegraphy or FM Telephony (Key-down conditions, per tube) gg g::g \éfl::egn.t oo _72 _Tg _'?g ::a'f‘
72 a
RADIO FREQUENCYPOWER AMPLIFIER TYPICAL OPERATION- | Class-C Telegraphy or FM Telephony (Key-down conditions, per tube) gg g::g \éfl::egn.t oo _72 _Tg _'?g ::a'f‘
Peak R-F Grid Input Voltage
170 Volts
RADIO FREQUENCYPOWER AMPLIFIER TYPICAL OPERATION- | Peak R-F Grid Input Voltage - - - 170 195 245 Volts
2000 MAX. v
2000 v
MaximumRatings | 2000 MAX. v
9 13 2.1 Watts
9 Watts
MaximumRatings | - 9 13 2.1 Watts
7 100 125 Watts
7 Watts
MaximumRatings | 7 100 125 Watts
D-C PLATE CURRENT
75 MA
MaximumRatings | D-C PLATE CURRENT - - - - - 75 MAX. MA. Plate Dissipation - - - . . 25 25 25 Watts
PLATE DISSIPATION
25 WATTS
MaximumRatings | PLATE DISSIPATION - - - . . . 25 MAX., WATTS P"”eTh”“: °“"P"' e amtat memere '4Z ' 75 Io: :vws
7 MAX. WATTS allow for
7 WATTS
MaximumRatings | 7 MAX. WATTS allow for
(Effective 11-1-51) © 1951, 1968 by Varian Printed in U.S. A,
11 A
MaximumRatings | (Effective 11-1-51) © 1951, 1968 by Varian Printed in U.S. A,
2000 volts. These charts show com- o / [K@)etmmeasroneca
2000 volts
MaximumRatings | 2000 volts. These charts show com- o / [K@)etmmeasroneca
plate dissipation in watts is indicated =] /7
7 watts
MaximumRatings | plate dissipation in watts is indicated =] /7
Points A, B, and C are identical to the 7525w
7525 A
MaximumRatings | Points A, B, and C are identical to the 7525w
1500, and 2000 volts respectively. [+]
1500 volts
MaximumRatings | 1500, and 2000 volts respectively. [+]
w cescess| 865 | -85 ; seseecee] 65 | -100
865 w
MaximumRatings | w cescess| 865 | -85 ; seseecee] 65 | -100
3 v ]
3 v
MaximumRatings | 3 v ]