100W Audio Amplifier based F.E.T | Schematic Diagrams

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100W Audio Amplifier based F.E.T


100W FET audio amplifier 300x183 100W Audio Amplifier based F.E.TThis 100W Audio Amplifier design uses two V-MOSFET transistor technology as the output stage, delivering 100W in output, with a 4 Ω load. It is important that the transistor of the output stage, kept cool by adding a heatsink or fan for example.

For this haigh power fet amplifier, use two symmetrical power supply.
V max: balanced + / – 65V DC
V max: balanced + / – 60V DC
I max: 6A + / – 65V
I max: 5A + / – 60V

100W Audio Amplifier based F.E.T Parts list :

R1 27 kΩC1 1 uF 63VD1 1N759A 0.5W 12V zenerR2 4.7 kΩC2 1nF 100VD2 1N4738AT 8.2V 1W zenerR3 5.6 kΩC3 100 uF 16VD3 1N4738AT 8.2V 1W zenerR4 5.6 kΩC4 100 nF 100VD4 1N4738AT 8.2V 1W zenerR5 47 k22 uF 16V C5D5 1N4738AT 8.2V 1W zenerR6 1 k4.7 pF ceramic C6Q1 BC547R7 22 kΩ22 uF 16V C7Q2 BC547R8 12 Ω47 uF 16V C8Q3 2N5460R9 1 MC9 100V 1nFQ4 MPSA93R10 22 kΩC10 100 uF 100VQ5 MPSA93R11 4.7 kΩC11 100 uF 100VQ6 BC182R12 33 ΩC12 100 nF 250VQ7 MPSA43R13 82 ΩC13 150 nF 100VQ8 BC182R14 33ΩC14 100 nF 250VQ9 BC212R15 2.7 kΩC15 100 uF 35VQ10 MPSA43R16 270 ΩQ11 BC182R17 680 ΩQ12 2SK134 or 2SK135R18 33 kΩL1 20 turns 0.6mm on R25Q13 2SJ49 or 2SJ50R19 680 ΩR20 82 ΩR21 22 kΩ0.33 Ω 5W R220.33 Ω 5W R23R24 8.2 kΩR25 10 Ω 1W470 Ω potentiometer TR14.7 kΩ potentiometer TR2

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