Summary of 10W STEREO AUDIO AMPLIFIER
This article describes a 10W stereo audio amplifier project centered on the Philips TDA1521 IC. Designed for mains-fed applications like TV and radio, it features an asymmetrical power supply, short-circuit protection, and thermal safety. The circuit delivers high-quality 2x10W output with low offset voltage and excellent channel balance using minimal external components.
Parts used in the 10W Stereo Audio Amplifier:
- TDA1521 IC
- External components (few)
- PCB
- Power supply unit (18V DC @ 3A)
- Stereo speakers (8 Ohm load)
This project is a 10W Stereo Audio Amplifier based on TDA1521 IC.
DESCRIPTION
The project built around Philips TDA1521 IC, The project provides high quality audio 2X10W Audio output. The device is especially designed for mains fed applications, (e.g. Stereo TV Sound and Stereo Radio). The circuit designed for asymmetrical power supply systems.
SPECIFICATIONS
- It has few external components
- Input muted during power on and off
- Low offset voltage between output and ground
- Excellent gain balance between channels
- Short circuit proof IC
- Thermally protected
- Supply 18V DC @ 3.5A
- Output Power 2X10W
- Voltage Gain 30dB
- Frequency response 20Hz-20Khz
- Input impedance 20K Ohm
- Output load 8 Ohm
- Recommended power supply 18V @ 3Amps
SCHEMATIC
PARTS
- What is the main IC used in this amplifier?
The project is built around the Philips TDA1521 IC. - How much power does this amplifier deliver?
It provides a high quality audio output of 2X10W. - Can this device be used with a TV or radio?
Yes, it is especially designed for mains fed applications such as Stereo TV Sound and Stereo Radio. - Does the circuit require a symmetrical power supply?
No, the circuit is designed for asymmetrical power supply systems. - What are the frequency response specifications?
The frequency response ranges from 20Hz to 20Khz. - Is the IC protected against short circuits?
Yes, the IC is short circuit proof. - What is the recommended power supply specification?
The recommended power supply is 18V DC at 3 Amps. - Does the input get muted during operation start and stop?
Yes, the input is muted during power on and off.
