• Skip to main content
  • Skip to primary sidebar

Homemade Circuit Projects

Need circuit help? Post them in the comments! I've answered over 50,000!

Blog | Categories | About | Contact | Calculators-online
You are here: Home / Archives for Audio and Amplifier Projects

Audio and Amplifier Projects

Music Triggered Amplifier Speaker Circuit

Last Updated on May 5, 2022 by Swagatam 8 Comments

buzzercoil

The circuit idea I have 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. The idea ws requested by Mr. David Alda. Technical Specifications Your site is just awesome. I’m hoping you can post a tweak to […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Music, Speaker, Triggered

Modify Human Speech with this Digital Voice Changer Circuit

Last Updated on August 7, 2021 by Swagatam 24 Comments

voicechangercircuit

In this post I have explained a voice modulator circuit which will change or transform an individuals unique voice into a completely new form. The new voice will be different to the original voice tone and unrecognizable. The Circuit Concept The characteristic tone of  every individuals voice is specifically unique in all circumstances. How often […]

Filed Under: Audio and Amplifier Projects Tagged With: Changer, Digital, Human, Modify, Speech, Voice

Make this Simple Music Box Circuit

Last Updated on January 3, 2024 by Swagatam 11 Comments

musicboxcircuit

This simple circuit can be used to emulate the operation of a music box. The number of notes may be limited to 10 at the most, and therefore is capable of generating a simple melody. By: Akanksha Rathode Circuit Operation The circuit uses two popular integrated circuits: The timer 555 and 4017 decade counter Operation […]

Filed Under: Audio and Amplifier Projects Tagged With: Music, Simple

Extended Telephone Ring Amplifier/Repeater Circuit

Last Updated on May 5, 2022 by Swagatam 2 Comments

telephoneringrepeatercircuit

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 room or even in another house. By: R.K. Singh Circuit Operation The circuit can be connected with an attached buzzer, the buzzer with a driving […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Extended, Repeater, Ring, Telephone

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

Last Updated on May 5, 2022 by Swagatam 8 Comments

BD5460GUL

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 either turn fully ON or fully OFF, but never switch between other undefined levels ensuring minimal heat dissipation and maximum efficiency from the devices. The […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Analog, Class, Differential, Input, Speaker

Make this DIY Contact MIC Circuit

Last Updated on September 15, 2020 by Swagatam 23 Comments

PCB Design

Contact mics can be used to sense unusual sounds when attached to various surfaces.It also Produce sound when voltage is applied to it.With the help of a basic Pre-amp circuit it can also be used to Electrify an Acoustic Guitar, where amplification is a must. Written and Submitted by: Ajay Dusa Piezoelectric Disc as the […]

Filed Under: Audio and Amplifier Projects Tagged With: Contact, DIY, MIC

  • « Go to Previous Page
  • Page 1
  • Interim pages omitted …
  • Page 15
  • Page 16
  • Page 17
  • Page 18
  • Page 19
  • Interim pages omitted …
  • Page 22
  • Go to Next Page »

Primary Sidebar




Subscribe to New Posts

Categories

  • Arduino Projects (89)
  • Audio and Amplifier Projects (132)
  • Automation Projects (17)
  • Automobile Electronics (101)
  • Battery Charger Circuits (83)
  • Datasheets and Components (104)
  • Electronics Theory (143)
  • Free Energy (37)
  • Games and Sports Projects (11)
  • Grid and 3-Phase (19)
  • Health related Projects (25)
  • Home Electrical Circuits (12)
  • Indicator Circuits (14)
  • Inverter Circuits (88)
  • Lamps and Lights (142)
  • Meters and Testers (69)
  • Mini Projects (46)
  • Motor Controller (64)
  • Oscillator Circuits (27)
  • Pets and Pests (15)
  • Power Supply Circuits (108)
  • Remote Control Circuits (50)
  • Security and Alarm (64)
  • Sensors and Detectors (101)
  • Solar Controller Circuits (59)
  • Temperature Controllers (42)
  • Timer and Delay Relay (49)
  • Transmitter Circuits (29)
  • Voltage Control and Protection (39)
  • Water Controller (36)




Other Links

  • Privacy Policy
  • Cookie Policy
  • Disclaimer
  • Copyright
  • Videos
  • Sitemap




People also Search

555 Circuits | 741 Circuits | LM324 Circuits | LM338 Circuits | 4017 Circuits | Ultrasonic Projects | SMPS Projects | Christmas Projects | MOSFETs | Radio Circuits | Laser Circuits | PIR Projects |

Social Profiles

  • Twitter
  • YouTube
  • Instagram
  • Pinterest
  • My Facebook-Page
  • Quora
  • Stack Exchange
  • Linkedin



  • Recent Comments

    • Swagatam on Simple Delay Timer Circuits Explained
    • Swagatam on How Shunt Regulator TL431 Works, Datasheet, Application
    • Swagatam on How to Design Simple LED Driver Circuits
    • Swagatam on How to Design Simple LED Driver Circuits
    • SA on How Shunt Regulator TL431 Works, Datasheet, Application

    © 2025 · Swagatam Innovations