This is the scheme diagram of 4W audio amplifier built based single power chip TDA1013B. This is a mono amplifier circuit, so you need to build two similar circuit to make it stereo. 18V DC power supply with at least 0.5A current is recommended for this circuit.
The TDA1013B is an integrated audio amplifier circuit with DC volume control, encapsulated in a 9-lead single in-line (SIL) plastic package. The wide supply voltage range makes this circuit ideal for applications in mains and battery-fed apparatus such as television receivers and record players.
The DC volume control stage has a logarithmic control characteristic with a range of more than 80 dB; control is by means of a DC voltage variable between 2 and 6.5 V.
This audio amplifier circuit has a well defined open loop gain and a fixed integrated closed loop. TDA1013B requires only several external components and offers stability and performance.
TDA1013B Features:
- Few external components
- Wide control range
- Wide supply voltage range
- Pin compatible with TDA1013A
- High signal-to-noise ratio
- Thermal protection
- Fixed gain
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