================================================================= TUBE: EL84 FICHIER SOURCE: sheets/129/e/EL84.pdf FABRICANT: MULLARD ANNEE: 1961-1964 (pages datees FEBRUARY 1961 / JANUARY 1964 / AUGUST 1964) PAGES: 22 (D1-D4 = donnees pp.1-2 et p.3-4 ; C1-C18 = courbes) Ordre lu: p1=D1, p2=D2, p3=D3, p4=D4(brochage), p5=C1, p6=C2, p7=C3, p8=C4, p9=C5, p10=C6, p11=C7, p12=C8 ... p22=C18. LANGUE: en ================================================================= ===== PAGE 1 (D1) ===== MULLARD — EL84 — OUTPUT PENTODE "Output pentode rated for 12W anode dissipation, primarily intended for use in a.c. mains operated equipment." HEATER Vh 6.3 V Ih 760 mA CAPACITANCES Cin 10.8 pF Cout 6.5 pF Ca-g1 < 500 mpF (= < 0.5 pF) Cg1-h < 250 mpF (= < 0.25 pF) CHARACTERISTICS Pentode connection: Va 250 V Vg2 250 V Ia 48 mA Ig2 5.5 mA Vg1 -7.3 V gm 11.3 mA/V ra 38 kohm mu(g1-g2) 19 Triode connection (g2 connected to a): Va 250 V Ia 34 mA Vg1 -9.0 V gm 10 mA/V ra 2.0 kohm mu 19.5 OPERATING CONDITIONS AS SINGLE VALVE AMPLIFIER Pentode connection (two columns): Va 250 / 250 V Vg2 250 / 250 V Ra 5.2 / 4.5 kohm Vg1 -7.3 / -7.3 V Ia 48 / 48 mA Ig2 5.5 / 5.5 mA Vin(rms)(Pout=50mW) 300 / 300 mV Vin(rms)(Dtot=10%) 4.3 / 4.4 V Pout(Dtot=10%) 5.7 / 5.7 W D3 9.5 / 8.0 % D2 2.0 / 5.0 % Triode connection (g2 to a): Va 250 V Ra 3.5 kohm Vg1 -9.0 V Ia(0) 34 mA Vin(rms)(Pout=50mW) 1.0 V Vin(rms) 6.0 V Pout 1.5 W Dtot 6.0 % Ia(max.sig.) 39 mA JANUARY 1964 — Page D1 ===== PAGE 2 (D2) ===== EL84 — OPERATING CONDITIONS FOR TWO VALVES IN PUSH-PULL Pentode connection (two cols 250 / 300): Va 250 / 300 V Vg2 250 / 300 V Rk (per valve) 270 / 270 ohm Ra-a 8.0 / 8.0 kohm Ik(0) 2x31 / 2x36 mA Ig2(0) 2x3.5 / 2x4.0 mA Vin(g1-g1) rms 16 / 20 V Pout 11 / 17 W Dtot 3.0 / 4.0 % Ia(max.sig.) 2x37.5 / 2x46 mA Ig2(max.sig.) 2x7.5 / 2x11 mA Distributed load, max output (screen-grid tapping 20% of primary turns): Va 300 / 300 ; Vg2 300 / 300 V Rk(per valve) 390+47 / 270 ohm Ra-a 6.0 / 8.0 kohm Ik(0) 2x28 / 2x40 mA Vin(g1-g1)rms 17 / 18.3 V Pout 14.4 / 15.4 W Dtot 0.85 / 1.17 % Ik(max.sig.) 2x55 / 2x48.5 mA Distributed load, min distortion (screen-grid tapping 43% of primary turns): Va 300 / 300 ; Vg2 300 / 300 V Rk(per valve) 390+47 / 270 ohm Ra-a 6.0 / 8.0 kohm Ik(0) 2x28 / 2x40 mA Vin(g1-g1)rms 16.8 / 16 V Pout 10.1 / 11 W Dtot 0.72 / 0.7 % Ik(max.sig.) 2x47 / 2x45 mA Triode connection (g2 to a): Va 250 / 300 V Rk(per valve) 560 / 560 ohm Ra-a 10 / 10 kohm Ik(0) 2x20 / 2x24 mA Vin(g1-g1)rms 16.5 / 20 V Pout 3.4 / 5.2 W Dtot 2.5 / 2.5 % Ia(max.sig.) 2x21.5 / 2x26 mA JANUARY 1964 — Page D2 ===== PAGE 3 (D3) ===== EL84 — OPERATING CONDITIONS WITH CONTINUOUS SINE WAVE DRIVE Single valve (two cols): Va 250 / 250 V Vg2(b) 250 / 250 V *Rg2 4.7(+-10%) / 3.9(+-10%) kohm Rk 130 / 130 ohm Ra 5.25 / 4.5 kohm Ia(0) 44 / 44 mA Ig2(0) 5.1 / 5.2 mA Vin(rms) 4.4 / 4.65 V Pout 5.4 / 5.6 W Dtot 12.5 / 13.9 % Ia(max.sig.) 40 / 42 mA Ig2(max.sig.) 8.6 / 8.4 mA Pg2 1.8 / 1.8 W *Decoupled by 8uF capacitor Two valves in push-pull: Va 300 V Vg2(b) 300 V *Rg2 1.8(+-10%) kohm Rk(per valve) 270 ohm Ra-a 8.0 kohm Ia(0) 2x35 mA Ig2(0) 2x4.0 mA Vin(g1-g1)rms 17.4 V Pout 15 W Dtot 3.4 % Ia(max.sig.) 2x42 mA Ig2(max.sig.) 2x7.0 mA Pg2 1.93 W *Screen-grid resistor common to both valves LIMITING VALUES: Va(b) max. 550 V Va max. 300 V Pa max. 12 W Vg2(b) max. 550 V Vg2 max. 300 V Pg2 max. 2.0 W Ik max. 65 mA -Vg max. 100 V Rg1-k max. 300 kohm (= 0.3 Mohm) Vh-k max. 100 V Rh-k max. 20 kohm FEBRUARY 1961 (1) — Page D3 [NB: Mullard ne donne ici qu'un seul Rg1-k = 300 kohm (cas resistif). Pg2p non liste separement. Vg1_max_neg = 100 V.] ===== PAGE 4 (D4) ===== EL84 — OUTPUT PENTODE — (brochage) B9A Base. PINOUT (bottom view, code 2834): pin1 = IC pin2 = g1 pin3 = k, g3 pin4 = h (heater) pin5 = h (heater) pin6 = IC pin7 = a (anode) pin8 = IC pin9 = g2 Envelope: 22.2 mm max dia ; 71 mm max / 78 mm max height FEBRUARY 1961 (1) — Page D4 ===== PAGE 5 (C1) ===== [courbes seules] gm, ra, Ia, Ig2 vs Vg1 ; Va=Vg2=250V ===== PAGE 6 (C2) ===== [courbes seules] Ia vs Va, Vg2=250V (Vg1 0..-10V), Pa=12W ===== PAGE 7 (C3) ===== [courbes seules] Ig2 vs Va, Vg2=250V (Vg1 0..-10V) ===== PAGE 8 (C4) ===== [courbes seules] Ia vs Va, Vg2=300V (Vg1 0..-10V), Pa=12W ===== PAGE 9 (C5) ===== [courbes seules] Ig2 vs Va, Vg2=300V (Vg1 0..-10V) ===== PAGE 10 (C6) ===== [courbes seules] Triode connected: Vg1, mu, gm, ra vs Ik ; Va+g2=250V ===== PAGE 11 (C7) ===== [courbes seules] Single valve performance, load 4.5kohm ; Va=Vg2=250 Vg1=-7.3 ===== PAGE 12 (C8) ===== [courbes seules] Single valve performance, load 5.2kohm ; Va=Vg2=250 Vg1=-7.3 ===== PAGE 13 (C9) ===== [courbes seules] Triode connected single valve ; Va=250 Ra=3.5k Rk=270 ===== PAGE 14 (C10) ===== [courbes seules] Two EL84 push-pull ; Va=Vg2=250 Rk=270 Raa=8k ===== PAGE 15 (C11) ===== [courbes seules] Two EL84 push-pull ; Va=Vg2=300 Rk=270 Raa=8k ===== PAGE 16 (C12) ===== [courbes seules] Two EL84 PP distributed load, tapping 20% ; Va=Vg2=300 Raa=6k ===== PAGE 17 (C13) ===== [courbes seules] Two EL84 PP distributed load, tapping 20% ; Va=Vg2=300 Raa=8k ===== PAGE 18 (C14) ===== [courbes seules] Two EL84 PP distributed load, tapping 43% ; Va=Vg2=300 Raa=6k ===== PAGE 19 (C15) ===== [courbes seules] Two EL84 PP distributed load, tapping 43% ; Va=Vg2=300 Raa=8k ===== PAGE 20 (C16) ===== [courbes seules] Two EL84 triode connected push-pull ; Va,g2=250V Rk=560 Raa=10k ===== PAGE 21 (C17) ===== [courbes seules] Two EL84 triode connected push-pull ; Va,g2=300V Rk=560 Raa=10k ===== PAGE 22 (C18) ===== [courbes seules] Triode connected: Ia vs Va (Vg1 0..-15V)