This is the mini audio amplifier circuit which built using power IC AN7115 as the main part. Tipically, with 9VDC supply and 4Ω loudspeaker, this amplifier will deliver about 2.1W. When the supply voltage (Vcc) is 9.0VDC , THD = 10% , RL = 8Ω, the output power of AN7114 can be up to 1.4W, the noise output is 3mV.
Limiting parameters: Vcc = 13V, power dissipation (without heat sink ) is 1.2W and 2.25W with radiator. Operating temperature: -20 to 70 ℃. It is suitable for small audio video application such mp3 player, mp4 player, ipods, smart phone, tablets, etc.
The following image is the PCB design layout for above circuit:
Class-D Power Audio Amplifier Using MD7120 MOSFET Driver This is the circuit design of Class-D…
This is the circuit diagram of active antenna amplifier for FM radio device. With only…
This is the schematic design of 400 Watt 70 Volt amplifier capable to deliver about…
This is the circuit diagram of 150W power amplifier which built using power transistors. The…
This is the circuit design of 1000W stereo audio amplifier. It is a very good…
This is the circuit design of 150W car audio amplifier. The circuit is divided in…
