Mini Audio Amplifier using IC AN7115

Mini Audio Amplifier using IC AN7115
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. (more…)

Octaver-Fuzz Guitar Effects

Octaver-Fuzz Guitar Effects
This is the circuit diagram of Octaver-Fuzz Guitar Effects Unit that easy to. Above schematic diagram was extracted from ETI-Canada, January 1980. The transistor Q1 is MPS6515, The diode DI and D2 are 1N4148. The IC is any low noise dual op-amp, shown on above scheme is the 4558. Switching could be improved with a full bypass mod. (more…)

2 watts amplifier schematic diagram

2 watts amplifier schematic diagram
The amplifier is designed for independent in a small speaker box. Can support to Walkman, Mini-Disc and CD players, computers, and similar devices with line or headphone output. Of course, in many cases, you will need to create two units for stereo. The circuit is intentionally designed using old type transistor, it is to get the harmonic distortion and to avoid the difficulty of finding good components. This 2 watt Amplifier (s) can be easily supplied by plug-in wall