This is the DIY 12-volt car amplifier circuit diagram using the TDA2004 IC. It’s a stereo audio circuit with a bridge mode IC. Here, the IC is used in bridge mode. We can use a DC 12 volts or a battery. Normally, this circuit is used in a car amplifier. This IC in stereo mode is 10+10 watts. and bridge mode 25 watts.
The TDA2004 is an integrated circuit (IC) primarily designed as a Class B dual audio power amplifier in an 11-pin Multiwatt package, most commonly used in car radio applications.
Key Features and Specifications
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Type: Class B Dual Audio Power Amplifier.
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Application: Specifically designed for car radios and power booster amplifiers.
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Power Output: Typically 10W + 10W stereo output (or up to 12W per channel) into a 2\Omega load at 14.4V supply, or 6.5W per channel into a 4\Omega load. It can drive very low impedance loads, down to 1.6\Omega.
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High Current Capability: Provides a high output peak current (up to 3.5A repetitive).
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Operating Voltage: The typical operating supply voltage (V_S) is from 8V to 18V.
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Low Component Count: It allows for compact applications due to the very low number of external components required.
Built-in Protection Systems: It includes several protections for high reliability:
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Output AC Short Circuit to Ground
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Overrating Chip Temperature (Thermal Shut-down)
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Load Dump Voltage Surge
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Fortuitous Open Ground
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Very Inductive Loads
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Polarity Inversion
Pin Configuration: It is typically an 11-pin package (Multiwatt-11), with pins including:
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Non-Inverting Input 1
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Inverting Input 1
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SVRR (Supply Voltage Rejection Ratio)
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Inverting Input 2
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Non-Inverting Input 2
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GND (Ground)
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Bootstrap 2
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Output 2
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+V_S (Positive Power Supply)
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Output 1
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Bootstrap
The IC is known for its low distortion and low noise characteristics, making it suitable for audio amplification projects, including simple home stereo amplifiers in addition to its intended car use.
audio equalizer and amplifier:
This is an audio equalizer and amplifier circuit diagram. It’s one of the best circuit diagrams for the audio amplifier. This circuit has 4 adjustable vol. 1st one is for the volume. 2nd one is for the bass. 3rd one is for the mid-range. And the fourth one is for the trouble. This circuit runs with 12 volts only. It’s a stereo bass tone circuit. stereo audio graphic. dual channel, left channel, and right channel.
Transistor amplifier circuit using MJE15003 and MJE15004:
This is the Transistor amplifier circuit using MJE15003 and MJE15004 transistors. This circuit can make 300 watts of output using 50-0-50 voltage and 6 amperes. We can use any PNP and NPN transistors. It’s a mono audio board.
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