In this post we will be talking about this MAX4466 microphone amplifier module, right? So this is a tiny little circuit that can amplify weak sound signals from an electret condenser microphone (ECM). That means it is going to take a very small electrical signal from the microphone and then boost it up so we […]
Audio and Amplifier Projects
What is ISD1820 Module? How to Connect and Use
The ISD1820 is a small ready-made module which can record human voice for short time and then play it back. It is based on the ISD1820 IC which is a voice record and playback chip. This module is very popular for DIY projects where we want to make some talking gadget or voice-alarm,or greeting system, […]
ISD1820 Voice Recording IC Datasheet, Circuit Diagram
The ISD1820 is a voice IC that lets us record voice from a mic and play it back using simple buttons or microcontroller. We can record between 8 to 20 seconds which depends on how we set it. This IC is used in small voice projects, talking toys, greeting circuits, voice alerts, and more. ISD1820 […]
Using Electret Microphone on Computer PC
The small circuit that we propose here provides a 20 dB gain to the microphone signal, which will finally allow you to effectively use an electret microphone on your PC. Circuit Description The diagram of our circuit is reproduced in the Figure below. Don’t expect a complicated diagram with op-amps everywhere, as our circuit is […]
100 Watt Power Amplifier Circuit Diagram using a Single IC TDA7294
Building a power hi-fi amplifier with MOS transistors requires the implementation of a relatively large number of components because, at the level of power stages, the connection between the bipolar transistors that make up the input stages and the MOS transistors of the output stages is far from simple. Fortunately, there is an elegant solution […]
10 Watt Stereo Amplifier Circuit Diagram
With a simple design, this 10 watt stereo amplifier circuit offers good dynamics and excellent bass reproduction. Although its power output is modest, at 2 x 10W RMS, it allows for comfortable use in small-sized rooms, such as apartments. When paired with speakers with a minimum power rating of 20W, it will provide complete satisfaction. […]