Car 20W audio booster amplifier
The circuit described is a 20W audio amplifier kit utilizing the TDA2005 integrated circuit (IC), which is recognized for its efficiency in car audio applications. This amplifier operates with a power supply voltage of 18 VDC and is capable of delivering an output power of 20 watts into a 4-ohm load, making it suitable for driving automotive speakers.
The TDA2005 IC features built-in thermal shutdown protection, which safeguards the circuit from overheating by automatically disabling the amplifier when it reaches a critical temperature. Additionally, it includes load dump voltage surge protection, which prevents damage from voltage spikes that can occur in automotive environments.
The circuit design incorporates terminal pins for the connection of left and right audio signal inputs, allowing for stereo sound reproduction. A Relimate connector is provided for the attachment of a potentiometer (POT), which enables volume adjustment. This feature enhances user control over audio output levels.
For power and speaker connections, the circuit includes a Power Battery Terminal (PBT), facilitating straightforward integration into existing audio systems. An onboard Power-On LED indicator provides visual confirmation of the amplifier's operational status.
To ensure effective heat dissipation, a heatsink is attached to the TDA2005 IC, which is essential for maintaining optimal performance during prolonged use. The circuit board is designed with four mounting holes, each measuring 3.2 mm, allowing for secure installation within a chassis or enclosure.
The printed circuit board (PCB) dimensions are 63 mm by 65 mm, making it compact enough for various applications while still providing the necessary functionality for a robust audio amplifier. This design is particularly advantageous for automotive audio systems where space is often limited.This circuit is a 20W Audio Amplifier kit, based on the TDA2005 IC, a class B dual audio amplifier, specifically designed for car radio applications etc. Power supply - 18 VDC. Output power - 20 W, 4 ?. IC built in Thermal Shut-down, Load dump voltage surge protected. Terminal pins for connecting left and right audio signal inputs. Relimate Connector for connecting Potentiometer (POT) for volume adjustment. Power Battery Terminal (PBT) for easy power supply and speaker connection. Power-On LED indicator. Heatsink for IC. Four mounting holes of 3.2 mm each with nut and stud. PCB dimensions 63 mm x 65 mm 🔗 External reference
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