Description

3x ECC83/12AX7,1x Balanced ECC83, and 2x EL84 power tubes from PSVANE , Suitable for Mesa Boogie Transatlantic TA-15 Guitar Combo Tube Amplifier.

ECC83 : The high-μ low-noise double three-pole small nine-pin tube is used for voltage amplification in the audio amplifier circuit, and the inverting drive push-pull mplification.

hot wire heating

UH 6.3 (parallel) 12.6 (string) V

IH 0.30 0.15 A

Limit value when zooming in class A1 (each side)

Anode voltage 330 V

Anode negative voltage -50 V

Positive gate voltage 0 V

Anode power dissipation 1.2 W

Hot wire cathode voltage (pk) ±180 V

Interpole capacitance

No.1 No.2

Input capacitance 1.6 1.6

PF

Output capacitance 0.46 0.34 PF

Across Capacitance 1.7 1.7 PF

Electrostatic parameters

Ua 100 250 V

Ug -1 -2 V

Ia 0.5 1.2 mA

Gm 1.25 1.6 mA/V

μ 100 100

ri 80 62.5KΩ

EL84:

With the same transconductance pentode EL84, its anode limit dissipation power is 12W, and it is used for A1, AB1, and B class amplification in audio amplifiers.

hot wire heating

UH 6.3 (parallel) 12.6 (string) V

IH 0.30 0.15A

limit rating

Anode voltage 500 V

Anode power dissipation 12 W

Second gate voltage 300 V

Second gate dissipated power 2 W

Cathode current 65

mA

First gate voltage -100 V

Voltage between hot wire cathodes ±100 V

first gate resistor

0.3 MΩ at fixed bias

1 MΩ at self bias

Interpole capacitance

Input capacitance 10.8

PF

Output capacitor 6.5 PF

Cross-circuit capacitance 0.5 PF

Capacitance between the first grid wire 0.25 PF

static parameters

Ua 256 V

Ug2 256V

Rk 120 mA

Ia 48 mA/V

Ig2 7

Gm ≥9KΩ

ri 38

μg1-g2 19 Recommended working state (reference value)

Single tube class A1 amplification

Ua...................................... 250 V

Ug2 ................................. 250 V

-Ug1 ................................. 7.3 V

Rk......................................135Ω

RL.................................................5.2kΩ

Ug1(r.M.S)................ 0 3.4 4.3 4.7 V

Ia(0)................................ 48 - - - mA

Ia(max.sig)............ - - 49.5 49.2 mA

Ig2(0)....5.5 - - - mA

Ig2(max.sig).............. - - 10.8 11.6 mA

Gm........................ 11.3 - - - mA/V

Ri........................ 38 - - - kΩ

μg1-g2................... 19 - - -

Pout................................. 0 4.5 5.7 6.0 W

Dtot................................. 0 6.8 10 - %

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