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Power - Pentode (NOT beam) ·Pentode-Triode

UCL82

Series-heater triode/pentode combination for audio voltage amplification and approximately 5 W power output.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: 9EX
Socket code: B9A
Base pins: 9
Nominal heater: 50 V / 100 mA

Description

Triode-pentode for audio-frequency voltage and output amplification. The supplied French datasheet was translated to English for descriptive output.

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: 9EX
Socket code: B9A
Base pins: 9
Nominal heater voltage: 50 V
Nominal heater current: 100 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

9EX - Terminal pinout

Electrical assignments shared by every tube using this base designation.

Terminal	Section	Connection	Evidence
PIN1Base Pin	B	G1 — Control Grid Original chart label: 2G1; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EX
PIN2Base Pin	A	G3 — Suppressor GridGroup 9EX2 Original chart label: 1G3; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EX
PIN2Base Pin	A	K — CathodeGroup 9EX2 Original chart label: 1K; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EX
PIN3Base Pin	A	G1 — Control Grid Original chart label: 1G1; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EX
PIN4Base Pin	—	H — Heater Original chart label: H; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EX
PIN5Base Pin	—	H — Heater Original chart label: H; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EX
PIN6Base Pin	A	P — Plate (Anode) Original chart label: 1P; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EX
PIN7Base Pin	A	G2 — Screen Grid Original chart label: 1G2; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EX
PIN8Base Pin	B	K — Cathode Original chart label: 2K; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EX
PIN9Base Pin	B	P — Plate (Anode) Original chart label: 2P; manufacturer verification pending	Unverified EIA Base Connections, printed page 132, 9EX

Section ratings

2 physical sections, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 28000 Ω
Transconductance: 0.0022 S
Amplification factor: 70
Max plate voltage: 300 V
Max plate dissipation: 1 W
Max cathode current: 15 mA

Published ratings and characteristics promoted from the approved source.

Section 2

Pentode

X-ray radiationInterelectrode capacitances

Plate resistance: 16000 Ω
Transconductance: 0.0075 S
Amplification factor: 9.5
Max plate voltage: 600 V
Max screen voltage: 300 V
Max plate dissipation: 7 W
Max screen dissipation: 2 W
Max cathode current: 50 mA

Published ratings and characteristics promoted from the approved source.

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

1957 Philips Receiving and Amplifying Tubes

Published operating points and test conditions from this source.

SECTION 2

Pentode

Characteristic

Application
Audio output stage

Other

Power Output
5 W
Representative published ClassA point

Data set 02

195X Tesla

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

HeaterVoltageNominal
50 V
Nominal
HeaterCurrentNominal
100 mA
Nominal
Maximum Plate Voltage
300 V
Maximum Plate Dissipation
1 W

SECTION 2

Pentode

Other

HeaterVoltageNominal
50 V
Nominal
HeaterCurrentNominal
100 mA
Nominal
Maximum Plate Voltage
600 V
Maximum Screen Voltage
300 V
Maximum Plate Dissipation
7 W

Data set 03

1963 Philips Electron Tubes Handbook V1

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate voltage
100 V
AF preamplifier
Plate current
3.5 mA
AF preamplifier

Characteristic

Transconductance
2200 uS
AF preamplifier
Amplification factor
70
AF preamplifier

SECTION 2

Pentode

Other

Plate voltage
170 V
ClassA
Screen voltage
170 V
ClassA
Grid voltage
-11.5 V
ClassA
Plate current
41 mA
ClassA
Screen current
9 mA
ClassA
Maximum plate dissipation
7 W

Characteristic

Transconductance
7500 uS
Plate resistance
16 kohm

Data set 04

1967 Mullard Receiving and Amplifying Valves

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

cathodes and
100
Characteristic

Capacitance

Va
100 V
CAPACITANCES (measured without external shie ld)
( gm
2.5
CAPACITANCES (measured without external shie ld)
ra
28 kO
CAPACITANCES (measured without external shie ld)
cathodes and
100
CAPACITANCES (measured without external shie ld)

Other

microphon y in circu its in wh ich the input voltage is ~
0 V
TRIODE SECTION AS A.F. AMPLIFIER
for an output of
50
TRIODE SECTION AS A.F. AMPLIFIER
cathodes and
100
TRIODE SECTION AS A.F. AMPLIFIER

SECTION 2

Pentode

Capacitance

Va
200 V
CAPACITANCES (measured without external shie ld)
Vg
200 V
CAPACITANCES (measured without external shie ld)
Vg I
16 V
CAPACITANCES (measured without external shie ld)
Vg2
200 V
CAPACITANCES (measured without external shie ld)
Vg1
16 V
CAPACITANCES (measured without external shie ld)
V1n (r. rn.s.) Pout =
600 mV
CAPACITANCES (measured without external shie ld)
Ra
5.6 kO
CAPACITANCES (measured without external shie ld)
* Pout
3.5 W
CAPACITANCES (measured without external shie ld)
Pout
9.8 W
CAPACITANCES (measured without external shie ld)
cathodes and
100
CAPACITANCES (measured without external shie ld)

Other

Va max
250 V
LIMITING VALUES
Vg
550 V
LIMITING VALUES
Vg
250 V
LIMITING VALUES
Rg
2
LIMITING VALUES
Rg1__k max. (fixed bias)
1
LIMITING VALUES
Rg _ k max. (se lf bias)
3
LIMITING VALUES
Rg _ k max. (fixed bias)
1
LIMITING VALUES
Rg _ k max. (grid cur rent biasing)
22
LIMITING VALUES
cathodes and
100
LIMITING VALUES
CON TRO L-GRID VOLTAG E AS PARAM ETER. Vg
100
LIMITING VALUES
CO N T ROL-GRID VO LTAG E AS PARAM ETER. V g
200 V
LIMITING VALUES
Vg (V)
0 V
LIMITING VALUES
PERFORMAN C E OF SING LE UCL8
100 A
LIMITING VALUES
PERFORMANCE O F SINGLE UC L8
200 A
PERFORMANCE O F SINGLE UC L82 CLASS 'A' AMPLIFIER. V, =V g 2 = 200V
cathodes and
100
PERFORMANCE O F SINGLE UC L82 CLASS 'A' AMPLIFIER. V, =V g 2 = 200V
PE RFO RMA NCE O F UCL
100 V
PERFORMANCE O F SINGLE UC L82 CLASS 'A' AMPLIFIER. V, =V g 2 = 200V

Data set 05

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Tension filament ...c VI
50 V
Courant filament . .qIf
100 mA
Capacité anode/ grille n° 1 … … Ca/
0.3 pF
Capacité grille n° 1/ filament … . CglfË
0.3 pF
Capacité grille/filament . . Cg/f
0.02 pF
Capacité anodeTriode/ grille n° 1 Pentode …… CaT/gP
0.02 pF
Capacité grilleTriode/anode Pentode …… C&T/aP
0.02 pF
Capacité grilleTriode/ grille n° 1 Pentode…… CgeT/g,P
0.025 pF
Capacité anodeTriode/anode Pentode.…………… CaT/aP ,
25 pF
Tension d'anode à coutant nul !s
550 V
Tension d'anode … vossreus
250 V
Tension de grille n° 2 à courant nu1
550 V
Tension de grille n° 2
250 V
Pissipation d'anode
7 W
Dissipation de grille n° 2 00e
2 W
Dissipation de crête de gulle n° 2
3.2 W
Courant de cathode
50 mA
Tension entre filament et cathode …… VÉk
200 V
Tension d'anode à courant nul .…….....……..….….….….…... Va bl
550 V
Tetision d'anode …… …. Va
250 V
Dissipation d'anode … Pa
1 W
Courant de cathode… cessosrsecaseraseserecnsacerseasecasecrcrcesee ÎK
15 mA
Tension entre filament et cathode …… VÊk
200 V

Capacitance

Capacité d'entrée.…. ……s Ce
9.3 pF
Capacité de sortie ……….………. … Cs
8 pF
Capacité d'entrée … .….……neereenmennenns CE
21 pF
Capacité de sortie .… … Cs
43 pF
Capacité anode/ grille …. … Ca/g
4.4 pF

Characteristic

Tension d'Anod® …..…..…creicereerrieircenseresveuenc Va
170 V
Tension de grille n°2. …… VE
170 V
Tension de grille n°e1 … … Veg
-11.5 V
Courant de grille n° 2 ...…...…...……csvereceseceee seceresececoec 182
9 mA
ve vavs vuce secasecase se saseeesene e S
7.5 mA
Tension d'AnodE …..…….ssersoreceececnnnnsennnnnnenns Va
100 V
Courant d'anode … … la
3.5 mA
Pente… … $
2.2 mA
VN 100
170 v
Rk 170
2600 Ω
Ra 3
3.25 kΩ
Ps 0 0,05 1 0 0,05
3.2 W
Rk (1) 140
125 Ω

Data set 06

1972 Philips Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

HeaterVoltageNominal
30 V
Nominal
HeaterCurrentNominal
100 mA
Nominal
Maximum Plate Voltage
250 V
Maximum Plate Dissipation
1 W
Maximum Cathode Current
15 mA

Characteristic

Amplification Factor
70
Typical

SECTION 2

Pentode

Other

HeaterVoltageNominal
30 V
Nominal
HeaterCurrentNominal
100 mA
Nominal
Maximum Plate Voltage
250 V
Maximum Screen Voltage
250 V
Maximum Plate Dissipation
7 W
Maximum Screen Dissipation
2 W
Maximum Cathode Current
50 mA

Characteristic

Transconductance
7500 µS
Typical
Amplification Factor
9.5
Typical
Plate Resistance
16000 ohm
Typical

Data set 07

1975 RCA RC30

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Plate supply voltage
550 V

Characteristic

Plate voltage
100 V
ClassA
Plate current
3.5 mA
ClassA

SECTION 2

Pentode

Other

Plate supply voltage
900 V
Screen-grid supply voltage
550 V

Characteristic

Plate voltage
200 V
ClassA
Screen-grid voltage
200 V
ClassA
Grid No.1 voltage
-16 V
ClassA
Plate current
35 mA
ClassA
Screen-grid current
7 mA
ClassA

Data set 08

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Anode current 1, mA
1 A
Anode current 1, mA
Heater current 100 mA
100 a
Heater current 100 mA
Heater voltage 30 Vv
30 a
Heater voltage 30 Vv
Anode to all except grid Cag) 4.3 pF
4.3 A
Anode to all except grid Cag) 4.3 pF
Grid to all except anode Cg(a) 2.7 pF
2.7 a
Grid to all except anode Cg(a) 2.7 pF
Anode to grid Cag 4.4 pF
4.4 A
Anode to grid Cag 4.4 pF
Anode to all except grid No. 1 Ca(gl) 8.0 pF
8 A
Anode to all except grid No. 1 Ca(gl) 8.0 pF
Grid No, 1 to all except anode Cgl(a) 9.3 pF
1 a
Grid No, 1 to all except anode Cgl(a) 9.3 pF
Anode voltage Va 100 Vv
100 A
Anode voltage Va 100 Vv
Grid voltage Vg 0 Vv
0 v
Grid voltage Vg 0 Vv
Anode current Iy 3.5 mA
3.5 A
Anode current Iy 3.5 mA
Transconductance S 2.2 mA/V
2.2 a
Transconductance S 2.2 mA/V
Amplification factor L 70
70 A
Amplification factor L 70 -
Anode voltage Va 170 v
170 A
Anode voltage Va 170 v
Grid No. 1 voltage Vg1 -11.5 V
1 v
Grid No. 1 voltage Vg1 -11.5 V
Anode current Iy 41 mA
41 A
Anode current Iy 41 mA
Transconductance S 7.5 mA/V
7.5 a
Transconductance S 7.5 mA/V
Amplification factor Hgogy 9.5
9.5 A
Amplification factor Hgogy 9.5 -
Internal resistance R 16 k@
16 a
Internal resistance R 16 k@
A) Signal source resistance Rg 0.22 MQ
220 mA
A) Signal source resistance Rg 0.22 MQ
Grid resistor Rg 3 MQ
3 s
Grid resistor Rg 3 MQ
Grid resistor of next stage Rg' 0.68 M
0.68 s
Grid resistor of next stage Rg' 0.68 M
Supply voltage Vp 170 100 Vv
100 S
Supply voltage Vp 170 100 Vv
Cathode resistor Ry 2.7 2.7 kQ
2.7 a
Cathode resistor Ry 2.7 2.7 kQ
Anode resistor R, 220 220 k§2
2 A
Anode resistor R, 220 220 k§2
Anode current Iq 0.43 0.23 mA
230 mA
Anode current Iq 0.43 0.23 mA
Voltage gain Vo/Vi 1) 51 47
47 V
Voltage gain Vo/Vi 1) 51 47 -
B) Signal source resistance Rg 0.22 MQ
0.22 S
B) Signal source resistance Rg 0.22 MQ
Grid resistor Rg 22 MQ
22 s
Grid resistor Rg 22 MQ
Grid resistor of next stage Rg 0.68 MQ
0.68 s
Grid resistor of next stage Rg 0.68 MQ

Other

Grid to heater Cgf max. 0.02 pF
0.02 a
Grid to heater Cgf max. 0.02 pF
Anode to grid No.1 Cag; max. 0.3 pF
300 mA
Anode to grid No.1 Cag; max. 0.3 pF
Grid No.1 to heater Cglf max. 0.3 pF
1 a
Grid No.1 to heater Cglf max. 0.3 pF
Max. output voltage Vo max 25 15 VRums
15 Ma
Max. output voltage Vo max 25 15 VRums

SECTION 2

Pentode

Other

Anode triode to grid No.l pentode CaTglP max., 0.02 pF
20 mA
Anode triode to grid No.l pentode CaTglP max., 0.02 pF
Grid triode to anode pentode CgTaP max. 0.02 pF
0.02 a
Grid triode to anode pentode CgTaP max. 0.02 pF
Grid triode to grid No. 1 pentode Cng 1p max. 0.025 pF
1 ma
Grid triode to grid No. 1 pentode Cng 1p max. 0.025 pF
Anode triode to anode pentode CaTaP max. 0.25 pF
250 mA
Anode triode to anode pentode CaTaP max. 0.25 pF

Characteristics

Grid No.2 voltage Vg2 170 v
2 v
Grid No.2 voltage Vg2 170 v
Grid No.2 current Ig2 9 mA
9 mA
Grid No.2 current Ig2 9 mA
Supply voltage Vpa
170 S
Supply voltage Vpa = Vbg2 100 170 v