• Skip to main content
  • Skip to primary sidebar

Making Easy Circuits

Learn and build electronic circuits

You are here: Home / Audio and Amplifier / Simple 100 Watt Amplifier Circuit using a Single IC

Simple 100 Watt Amplifier Circuit using a Single IC

Last Updated on November 16, 2024 by Admin Leave a Comment

In this post we learn about a very simple yet robust single IC 100 watt power amplifier circuit which utilizes minimum number of components.

As one can witness virtually the entire amplifier circuit itself is processed within the LM12CLK integrated circuit which is actually an operational power amplifier. The IC is equipped with an output stage that is able to operate at impedance of even as low as 2 ohms and therefore obtain a reasonably robust 150W of power. In order to ensure security and stability of the circuit here we have designed to make the unit work with 4 ohm speakers and this gives us an RMS power of 100W.

Simple 100 Watt Amplifier Circuit using a Single IC

The coil or the inductor L in the output of the IC is formed by winding 14 turns of wire No. 18 with a 1 inch diameter without core. The distance between each of the turns is not too critical, so somewhat here and there will not affect the performance.

The transformer for the power supply must be rated to provide 24v + 24v of AC supply in its secondary with a minimum of  5A current for one stage (mono) or twice 10A for two stages (stereo). Although four numbers of 15A rectifier diodes could be incorporated to make the bridge rectifier unit, it is advisable to employ a metal rectifier bridge unit instead and fit it within the relevant heat sink.

Since the value of the resistance is odd the resistance of 1.1K must be kind of a precision resistor, MFR 1% or SMD. And also the resistance at the output (shown in parallel with the coil) must be rated at least 2W power.

The electrolytic capacitors indicated in this simple 100 watt single chip circuit must be rated at 50V or 63V.

You'll also like:

  • 1.  Microphone Mixer Circuit
  • 2.  Short Wave Radio Circuit
  • 3.  Simple Logarithmic Amplifier Circuit
  • 4.  Convert Whistle Sound to Electronic Music
  • 5.  Door Buzzer Circuit
  • 6.  How to Build a 2 x 50V 350W SMPS Circuit

About Admin

Hey friends, Thanks a bunch for stopping by this site! I am an engineer with a Bachelor of Engineering in Electronics and Telecommunication. One of my passions is gathering information from all sorts of electronics books and tutorials. I then take that information and compile it into a language that is super easy to understand. My goal is to make those complex electronics circuit concepts and technical terms much more accessible for all the new and budding electronics engineers out there. I can also design customized circuit diagrams as required by the users.
If you have any questions related to this field, please do not hesitate to drop a comment! I am always here and ready to help you out with any queries you might have. I cannot wait to hear from you!

Reader Interactions

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Primary Sidebar

Categories

  • 3 Phase (4)
  • 8051 Microcontroller (1)
  • Arduino (11)
  • Audio and Amplifier (102)
  • Automation (8)
  • Battery Chargers (64)
  • Bicycle Projects (4)
  • Car and Motorcycle Projects (39)
  • Datasheets (10)
  • DIY Projects (5)
  • Electrical (15)
  • Free Energy (6)
  • Games Projects (2)
  • High Voltage (14)
  • Hobby Projects (30)
  • Household Circuits (2)
  • IC 555 Circuits (5)
  • Ignition Circuits (2)
  • Indicators (50)
  • Infrared (6)
  • Inverter Circuits (29)
  • Lights and Lamps (97)
  • Medical (8)
  • Meter and Tester Circuits (38)
  • Motor Driver (17)
  • New Circuits (56)
  • Oscillators (30)
  • Pets and Pests (5)
  • Power supply (80)
  • Protection Circuits (25)
  • PWM (9)
  • Remote Control (20)
  • Security and Alarm Circuit (48)
  • Sensors and Detectors (66)
  • Signal Processor (23)
  • Solar Controller Circuits (62)
  • SSR (3)
  • Temperature Controller (20)
  • Timer (25)
  • Transformerless (7)
  • Transmitters (12)
  • Tutorials (45)
  • UPS (2)
  • Voltage Regulators (57)
  • Water Sensor and Controller (29)
  • Home
  • Privacy Policy
  • Contact
  • Disclaimer
  • Copyright

© 2025 · Making Easy Circuits