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"Ei-RC" - Electronic tubes factory
Data Sheet
Page 1 of 8
EL84
EL84 is A.F. Output
Pentode
Quick reference data
•
Anode current Ia=48mA
Transcoductance S=11,3mA/V
Amplification µg2g1=19
•
Output power Wo=6W
•
•
Heating
Indirect by AC or DC; parallel supply.
Heater voltage
Heater current
Telephone:
FAX:
Postal address:
Electronic mail:
Web site:
Vf
If
6,3
760
(V)
(mA)
+381 18 550 741
+381 18 550 806
Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
[email protected]
http://www.eierc.com/rc
"Ei-RC" - Electronic tubes factory
Page 2 of 8
EL84
Dimensions and connections
Base: Noval
Telephone:
FAX:
Postal address:
Electronic mail:
Web site:
Data Sheet
+381 18 550 741
+381 18 550 806
Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
[email protected]
http://www.eierc.com/rc
"Ei-RC" - Electronic tubes factory
Data Sheet
Page 3 of 8
EL84
Operating characteristics
Class A
Anode voltage
Grid No. 2 voltage
Grid No. 1 voltage
Va
Vg2
Vg1
250
250
-7,3
(V)
(V)
(V)
Cathode resistor
Rk
135
(Ω)
Load resistance
Ra
5,2
(kΩ)
Grid No. 1 driving
voltage
Anode current
Grid No. 2 current
Transconductance
Vi
0
Ia
Ig2
S
48
5,5
11,3
µg2g1
19
Internal resistance
Ri
38
Output power
total
second
Distortion harmonic
third
harmonic
Wo
dtot
0 0,05 4,5 5,7
6,8 10
d3
5,8 9,5
(%)
Anode voltage
Grid No. 2 voltage
Grid No. 1 voltage
Va
Vg2
Vg1
250
250
-7,3
(V)
(V)
(V)
Cathode resistor
Rk
135
(Ω)
Load resistance
Ra
4,5
(kΩ)
Grid No. 1 driving
voltage
Vi
Amplification
Telephone:
FAX:
Postal address:
Electronic mail:
Web site:
d2
0,3 3,4 4,3
4,7
(VRMS)
49,5 49,2
10,8 11,6
(mA)
(mA)
(mA/V)
3
0
(kΩ)
(W)
(%)
6
2
0,3 3,5 4,4
(%)
4,8
(VRMS)
+381 18 550 741
+381 18 550 806
Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
[email protected]
http://www.eierc.com/rc
"Ei-RC" - Electronic tubes factory
Data Sheet
Page 4 of 8
EL84
Anode current
Grid No. 2 current
Transconductance
Ia
Ig2
S
48
5,5
11,3
µg2g1
19
Internal resistance
Ri
38
Output power
total
second
Distortion harmonic
third
harmonic
Wo
dtot
0 0,05 4,5 5,7
7,5 10
Anode voltage
Grid No. 2 voltage
Grid No. 1 voltage
Amplification
50,6 50,5
10 11
(mA)
(mA)
(mA/V)
(kΩ)
(W)
(%)
6
d2
5,7 5
(%)
d3
4,5 8
(%)
Va
Vg2
Vg1
250
250
-8,4
(V)
(V)
(V)
Cathode resistor
Rk
210
(Ω)
Load resistance
Ra
7
(kΩ)
Vi
0 0,3 3,5
Grid No. 1 driving
voltage
Anode current
Grid No. 2 current
Transconductance
(VRMS)
36
14,6
(mA)
(mA)
(mA/V)
Ia
Ig2
S
36
4,1
10
µg2g1
19
Internal resistance
Ri
40
Output power
total
second
Distortion harmonic
third
harmonic
Wo
dtot
0 0,05 4,2
10
d2
1,7
(%)
d3
8,7
(%)
Amplification
Telephone:
FAX:
Postal address:
Electronic mail:
Web site:
36,8
8,5
5,5
5,6
+381 18 550 741
+381 18 550 806
Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
[email protected]
http://www.eierc.com/rc
(kΩ)
(W)
(%)
"Ei-RC" - Electronic tubes factory
Data Sheet
Page 5 of 8
EL84
Anode voltage
Grid No. 2 voltage
Grid No. 1 voltage
Va
Vg2
Vg1
250
210
-6,4
(V)
(V)
(V)
Cathode resistor
Rk
160
(Ω)
Load resistance
Ra
7
(kΩ)
Grid No. 1 driving
voltage
Anode current
Grid No. 2 current
Transconductance
Vi
0
Ia
Ig2
S
36
3,9
10,4
µg2g1
19
Internal resistance
Ri
40
Output power
total
second
Distortion harmonic
third
harmonic
Wo
dtot
0 0,05 4,3
10
d2
1,8
(%)
d3
9,3
(%)
Amplification
0,3 3,4
3,8
(VRMS)
36,6
7,3
36,5
8
(mA)
(mA)
(mA/V)
4,7
Notes:
1. Grid No. 2 driving voltage measured with fixed bias
2. Distortion at Ig1=+0,3µA
Telephone:
FAX:
Postal address:
Electronic mail:
Web site:
+381 18 550 741
+381 18 550 806
Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
[email protected]
http://www.eierc.com/rc
(kΩ)
(W)
(%)
"Ei-RC" - Electronic tubes factory
Data Sheet
Page 6 of 8
EL84
Class B, two tubes in push-pull
Anode
voltage
Grid No. 2
voltage
Grid No. 1
voltage
Load
resistance
Grid No. 1
driving
voltage
Anode current
Grid No. 2
current
Output power
Distortion
Va
250
300
(V)
Vg2
210
300
(V)
Vg1
-11,6
-14,7
(V)
Raa
8
8
(kΩ)
Vi
0
8
0
10
(VRMS)
Ia
2×10
2×37,5 2×7,5 2×46
(mA)
Ig2
2×1,1
2×7,5
(mA)
Wo
dtot
0
11
3
2×0,8 2×11
0
17
4
(W)
(%)
Class AB, two tubes in push-pull
Anode
voltage
Grid No. 2
voltage
Common
cathode
resistor
Load
resistance
Grid No. 1
driving
voltage
Anode current
Telephone:
FAX:
Postal address:
Electronic mail:
Web site:
Va
250
300
(V)
Vg2
210
300
(V)
Rk
130
130
(Ω)
Raa
8
8
(kΩ)
Vi
0
Ia
2×31
8
0
2×37,5 2×36
10
(VRMS)
2×46
+381 18 550 741
+381 18 550 806
Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
[email protected]
http://www.eierc.com/rc
(mA)
"Ei-RC" - Electronic tubes factory
Data Sheet
Page 7 of 8
EL84
Grid No. 2
current
Output power
Distortion
Ig2
2×3,5
2×7,5
2×4
2×11
(mA)
Wo
dtot
0
11
3
0
17
4
(W)
(%)
Operating characteristics in triode connection (g2 connected to a)
Class A
Anode voltage
Cathode
resistor
Load
resistance
Grid No. 1
driving voltage
Anode current
Output power
Distortion
Va
250
(V)
Rk
270
(Ω)
Ra
3,5
(kΩ)
Vi
0
Ia
Wo
dtot
34
1
6,7
(VRMS)
0,05
36
1,95
9
(mA)
(W)
(%)
Class AB, two tubes in push-pull
Anode voltage
Common cathode
resistor
Va
250
300
(V)
Rk
270
270
(Ω)
Load resistance
Raa
10
10
(kΩ)
Grid No. 1
driving voltage
Anode current
Output power
Telephone:
FAX:
Postal address:
Electronic mail:
Web site:
Vi
Ia
Wo
0
8,3
0
2×20 2×21,7 2×24
0
3,4
0
10
(VRMS)
2×26
5,2
+381 18 550 741
+381 18 550 806
Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
[email protected]
http://www.eierc.com/rc
(mA)
(W)
"Ei-RC" - Electronic tubes factory
Data Sheet
Page 8 of 8
EL84
Distortion
Grid No. 1
driving voltage
for Wo=50mW
dtot
2,5
2,5
(%)
Vi
0,95
0,9
(VRMS)
Limiting - maximal values (design center rating system)
Anode voltage
Anode dissipation
Grid No. 2 voltage
Grid No. 2 dissipation
Grid No. 1 voltage
Cathode current
automatic
Grid No. 1 bias
resistor
fixed bias
Cathode to heater voltage
Vao
Va
Wa
Vg2o
Vg2
Wg2
Wg2p
Vg1
Ik
Rg1
Vkf
550
300*
12*
550
300*
2
4
-100
65
1
(V)
(W)
(V)
(W)
(V)
(mA)
(MΩ)
0,3
100
(V)
*When the heater and positive voltages are obtained from a storage battery by means of
vibrator, the max. values of Va and Vg2 are 250V and that of Wa is 9W.
Telephone:
FAX:
Postal address:
Electronic mail:
Web site:
+381 18 550 741
+381 18 550 806
Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
[email protected]
http://www.eierc.com/rc
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