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 […]
Audio and Amplifier Projects
How to Build a Microphone Amplifier Circuit
In this article we are going to see how to build a microphone amplifier circuit with operational amplifier LM324. This circuit can be used as good pre-amplifier for audio projects. Selecting an Opamp The heart of the mic amplifier circuit is an op-amp LM324 which is quad op-amp moulded in single IC. We are going […]
Selecting Power Supply for Car Amplifiers
The following discussion informs us regarding how to select the right power supply for a car amplifier which needs to be operated at home. The questions were raised by Mr. Gyaneshwar Singh. Questions and Answers Regarding Selecting Car Amplifier Correctly Question: Thanks for creating awareness on your own concept and resolving problems of others. I am […]
60W, 120W, 170W, 300W Power Amplifier Circuit
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 watt, 170 watt or even 300 watt power output (RMS). The Design The circuit diagram in Fig. 2 tells about the highest power capability form […]
6 watt Audio Amplifier Circuit Using TDA1011
A very simple yet useful 6 watt audio amplifier circuit using IC TDA1011 is explained in the following article, which can be built by new hobbyist and used for amplifying music from different sources such as cellphones, FM radios, doorbell etc. By:Dhrubajyoti Biswas. A monolithic integrated audio amplifier circuit TDA1011 is especially used for recording […]
5 Best 40 Watt Amplifier Circuits Explored
In this post I will talk about 5 outstanding, easy to build, low distortion Hi-Fi 40 watt amplifier circuits that can be further upgraded to higher wattage through some minor tweaks. This article was contributed to me through email by a dedicated follower Although you may find several hybrid output modules available, hardly any of […]