Power amplifier tube EL84 6BQ5 - JJ

• R. F. OUTPUT PENTODE.
• Uf = 6.3V
• If = 0.760mA

Characteristics:

• Ua = 250V
• Ug2 = 250V
• Ug1 = -7.3V
• Ia = 48mA
• Ig2 = 5.5mA
• S = 11.3mA/V
• Ri = 40KOhm,
• æg1/g2 = 19.

Class A1 amplifier:

• Ua = 250V, Ug2 = 250V
• Rk = 135 ohms
• Ia = 48mA
• Ig2 = 5.5mA
• Ra = 5.2kOhm
• Ug1eff (50mW) = 0.3V
• Ug1 eff.(N) = 4.3V
• N (10%)1) = 5.7W
• N 2) = 6W
• 1) Ug1 fixed grid bias
• 2) Ig1 +0.3æA

Limits:

• Ua = 300V
• Wa = 12W, Ug2 = 300V
• Wg2 = 2W, Ug1 = -100V
• Ik = 65mA, Rg1 = 1MOhm for automatic bias
• Rg1 = 0.3MOhm for fixed bias
• Uk/f = 100V
• Capacitance: cg/k = 10pF
• approx = 5.1pF
• cg/a = 0.6pF
• cg1f = 0.15pF
• Dimensions: (H/H with pins x diameter): 71.4/77.8 x 22 mm