12AT7中文资料
ECC81/12AT7 Page 1 of 4
Telephone: +381 18 550 741
ECC81 is R.F. Double Triode
Quick reference data
? Anode current I a=10mA
? Transcoductance S=5,5mA/V
? Amplification μ=60
Heating
Heating is indirect by AC od DC, with serial or parallel supply. Please note that, in case of serial supply, a current limiting device must be inserted in the heater circuit for limiting the current when switching on.
Heater voltage V f6,312(V)
Heater current I f300150(mA)
pins9-(4+5)4-5
FAX: +381 18 550 806
Postal address: Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
Electronic mail: eirc@https://www.360docs.net/doc/406750610.html,
Web site: https://www.360docs.net/doc/406750610.html,/rc/default.htm
ECC81/12AT7
Page 2 of 4
Telephone: +381 18 550 741 Dimensions and connections
Base: Noval
Typical characteristics and operating conditions
Anode voltage V a 100170200250 (V) Grid voltage V g -1,0-1,0-1,0-2,0 (V) Anode current I a 3,08,511,510 (mA) Transconductance S 3,755,96,75,5 (mA/V) Amplification μ 62667060 Internal resistance
R i
16,5
11
10,5
11
(k ?)
FAX:
+381 18 550 806
Postal address: Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia Electronic mail: eirc@https://www.360docs.net/doc/406750610.html,
Web site: https://www.360docs.net/doc/406750610.html,/rc/default.htm
ECC81/12AT7
Page 3 of 4
Telephone: +381 18 550 741 Limiting - maximal values (design center rating system)
V
ao 550Anode voltage
V a 300(V) Anode dissipation W a 2,5(W) Cathode current I k 15(mA) Grid voltage V g -50(V) Grid resistor (automatic bias)
R g 1(M ?) Cathode to heater voltage
V kf 90
(V)
FAX:
+381 18 550 806
Postal address: Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia Electronic mail: eirc@https://www.360docs.net/doc/406750610.html,
Web site: https://www.360docs.net/doc/406750610.html,/rc/default.htm
ECC81/12AT7 Page 4 of 4
Telephone: +381 18 550 741
FAX: +381 18 550 806
Postal address: Bul. Sv. Cara Konstantina 80-86, 18000 Nis, Yugoslavia
Electronic mail: eirc@https://www.360docs.net/doc/406750610.html,
Web site: https://www.360docs.net/doc/406750610.html,/rc/default.htm