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You are here: Home / Archives for Amplifiers

60W, 120W, 170W, 300W Power Amplifier Circuit

Last Updated on May 5, 2022 by Swagatam 27 Comments

The post presents an in-depth discussion regarding the construction details of a universal high power amplifier which can be modified or adjusted to suit any range within 60 watt, 120 […]

Filed Under: Amplifiers, Audio Projects

Music Triggered Amplifier Speaker Circuit

Last Updated on May 5, 2022 by Swagatam 8 Comments

The circuit idea explained below enables a power amplifier loudspeakers to switch ON only when there’s an input music available, otherwise it makes sure that the loudspeakers remain shut off. […]



Filed Under: Amplifiers, Audio Projects

Extended Telephone Ring Amplifier/Repeater Circuit

Last Updated on May 5, 2022 by Swagatam Leave a Comment

The discussed phone repeater circuit can extend the range of your land line ring sound from the phone such that one is able to make a call heard in another […]

Filed Under: Amplifiers, Audio Projects

3.7 V Class-D Speaker Amplifier Circuit for Differential Analog Input

Last Updated on May 5, 2022 by Swagatam 6 Comments

A class D amplifier is basically a category of amplifier in which the power devices (mosfets and BJTs) are operated like switches. The associated output devices in such amplifier circuits […]

Filed Under: Amplifiers, Audio Projects

Cellphone RF Triggered Car Amplifier Auto-Mute Circuit

Last Updated on May 5, 2022 by Swagatam 4 Comments

The following article presents a circuit design which would mute your car amplifier music the moment it detects a cellphone call inside the car, enabling an automatic muting during the […]

Filed Under: Amplifiers, Car and Motorcycle, Transmitter Circuits

SMPS 2 x 50V 350W Circuit for Audio Power Amplifiers

Last Updated on May 5, 2022 by Swagatam 217 Comments

This article will illustrate a simple procedure to devise an unregulated 50V switching SMPS symmetric power supply of 350W. This unit can be substituted with the standard audio amplifier power […]

Filed Under: Amplifiers, Audio Projects, Power Electronics, SMPS

Class D Amplifier Circuit Using IC 555

Last Updated on May 5, 2022 by Swagatam 39 Comments

pinout diagram of IC LM386

A Class D amplifier also termed as a digital amplifier uses pulse width modulation or PWM technology for amplifying the fed small amplitude analogue music signal. Why a Class D […]

Filed Under: 555 IC Circuits, Amplifiers, Audio Projects

Sound Activated Automatic Amplifier Mute Circuit

Last Updated on May 5, 2022 by Swagatam 5 Comments

The following article presents a simple sound operated/activated amplifier muting circuit which enables the amplifier to silence itself as soon a voice or an external sound occurs across the detector MIC. The […]

Filed Under: Amplifiers, Audio Projects

IC TDA 7560 Datasheet – 4 x 45W QUAD BRIDGE CAR RADIO AMPLIFIER PLUS HSD

Last Updated on May 5, 2022 by Swagatam 33 Comments

In this post we learn the datasheet of the IC  TDA7560 which is a cutting-edge BCD (Bipolar / CMOS / DMOS) technology class AB 4 x 45 quad Audio Power […]

Filed Under: Amplifiers, Audio Projects, Datasheets, Radio Circuits

LM386 Amplifier Circuit – Working Specifications Explained

Last Updated on May 5, 2022 by Swagatam 54 Comments

The IC LM386 is a 8-pin tiny power amplifier chip, specially made for operating under relatively low voltage parameters, yet provide considerable amplification. IC LM386 amplifier circuit becomes suitable for […]

Filed Under: Amplifiers, Electronic Components



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