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12AU7 Ei RC

The document is a 4 page data sheet for an ECC82/12AU7 double triode electronic tube from Ei-RC electronics factory. It provides specifications such as a heater voltage of 6.3V, amplification of 17, and lists typical operating characteristics including anode voltage, grid voltage, and transconductance. The data sheet also outlines physical dimensions, connections, limiting maximal values, and an application note for using the tube without precautions against microphony.

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Claudio Chalof
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150 views4 pages

12AU7 Ei RC

The document is a 4 page data sheet for an ECC82/12AU7 double triode electronic tube from Ei-RC electronics factory. It provides specifications such as a heater voltage of 6.3V, amplification of 17, and lists typical operating characteristics including anode voltage, grid voltage, and transconductance. The data sheet also outlines physical dimensions, connections, limiting maximal values, and an application note for using the tube without precautions against microphony.

Uploaded by

Claudio Chalof
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 4

"Ei-RC" - Electronic tubes factory Data Sheet

ECC82/12AU7 Page 1 of 4

ECC82 is A.F. Double Triode

Quick reference data

• Anode current Ia=10,5mA


• Transcoductance S=2,2mA/V
• Amplification µ=17

Heating

Heating is indirect by AC od DC, with serial or parallel supply.

Heater voltage Vf 6,3 12,6 (V)


Heater current If 300 150 (mA)
pins 9-(4+5) 4-5

Telephone: +381 18 550 741


FAX: +381 18 550 806
Postal address: Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
Electronic mail: eirc@eierc.com
Web site: http://www.eierc.com/rc/default.htm
"Ei-RC" - Electronic tubes factory Data Sheet

ECC82/12AU7 Page 2 of 4

Dimensions and connections

Base: Noval

Typical characteristics and operating conditions

Anode voltage Va 100 250 (V)


Grid voltage Vg 0 -8,5 (V)
Anode current Ia 11,8 10,5 (mA)
Transconductance S 3,1 2,2 (mA/V)
Amplification µ 19,5 17
Internal resistance Ri 6,25 7,7 (kΩ)
Telephone: +381 18 550 741
FAX: +381 18 550 806
Postal address: Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
Electronic mail: eirc@eierc.com
Web site: http://www.eierc.com/rc/default.htm
"Ei-RC" - Electronic tubes factory Data Sheet

ECC82/12AU7 Page 3 of 4

Limiting - maximal values (design center rating system)

Vao 550
Anode voltage (V)
Va 300
Anode dissipation Wa 2,75 (W)
Cathode current Ik 20 (mA)
Grid voltage Vg -100 (V)
Grid voltage, peak Vgp -250 (V)
Grid resistor
Rg 1 (MΩ)
(automatic bias)
Cathode to heater voltage Vkf 180 (V)
Cathode to heater circuit
resistance in phase Rkf 150 (kΩ)
splitting circuits

Telephone: +381 18 550 741


FAX: +381 18 550 806
Postal address: Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
Electronic mail: eirc@eierc.com
Web site: http://www.eierc.com/rc/default.htm
"Ei-RC" - Electronic tubes factory Data Sheet

ECC82/12AU7 Page 4 of 4

Application note:
This tube can be used without precautions against microphony in equipment which is characterized by
Vi ≥ 10mV for an output of 50mW of the output tube (or Vi ≥ 100mV for 5W output), provided that average
acceleration of the tube is not greater than indicated in the Section "Microphonic effect" from the
"Application directions". When the center tap of the heater transformer is grounded, Rg ≤ 0,3MΩ and Rk is
sufficiently decoupled, and the disturbance level from hum and noise will be better than 60dB bellow 100mV.

Telephone: +381 18 550 741


FAX: +381 18 550 806
Postal address: Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
Electronic mail: eirc@eierc.com
Web site: http://www.eierc.com/rc/default.htm

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