Circuit Amplifier TDA7294 80W
Power
Amplifier based tda7294 from ST microeletronics, you can gain power up to 100W in a single chip, for stereo unit, use similar two circuits.
This circuit is based on the manufacturer’s datasheet for tda7294 typical application usage. Amplifier is ready to work with a powerful signal source, if necessary, use an opamp pre-amplifier.
This type of 80w power
amplifier circuit chip is ideal for surround sound systems. Since this is quite compact and can be used for independent amplifier for each speaker.
In this way it can be upgraded to share source to support all of the connected amplifier.
- Resistors 1/4 watt 5% unless stated other value
- R1-22K
- R2 680
- R3 22k
- R4 47k
- R5 100k
- R6 27k Ohms – Red, Violet, Orange, Gold-value non-commercial use 22k + 5.6 k in series
- R7 2.2 ohm 2 watt Red, Gold, Gold
- Capacitors
- From C1 1μF 100V – Capacitor Polyester Film
- C2 47μF 50V Electrolytic Capacitor
- C3, C4 10μF 63V Electrolytic Capacitors
- C5 22μF 50V Electrolytic Capacitor
- C6, C8 1000μF to 4700μF 50V 50 V electrolytic capacitors
- C7, C9, C10 Polyester -104 100n, 100n or 0.1
- Semiconductors
- D1 1N4148
- IC1 TDA7294V
- Connectors
- K1 connector for signal input (Line In)
- K2 connector for connecting the source
- K3 connector to connect key standby Mute
- K4 Connector for Connecting the Speaker