In this post I have explained a simple IR based remote controlled night lamp timer circuit. The idea was requested by Mr. Raj Kumar Mukherji. Technical Specifications Please provide the component values and the modified circuit if: a. the circuit is made to work from 4.5 volts or 5 volts b. the relay is replaced […]
Newly Updated Circuit Projects:
Remote Controlled Trolley Circuit without Microcontroller
In this post I have explained how to make a cheap yet powerful remote controlled trolley which can be maneuvered left, right, forward and reverse as required, by the user using the given remote handset. The idea does not rely on an microcontroller circuit. In one of my previous posts I discussed about a simple […]
How to Trigger a Camera Remotely without Physical Presence
In this article I have explained a simple RF remote control circuit which can be used for activating a digital camera remotely, by a press of a button. The idea was requested by Mr. Pat Circuit Objectives and Requirements I’m Pat, from France. Congratulations for your blog & website about electronic’s devices : it’s the […]
Low Dropout (LDO) Voltage Regulator IC KA378R12C – Pinout and Working Specs
In this article I have explained the pinout functions, and datasheet of a versatile low dropout (LDO) voltage regulator IC KA378R12, and also presents a circuit diagram showing how to use the IC in practical applications. A related question was asked by Mr. Jon, which inspired me to update this post. The question can be […]
Wireless Home theater Circuit using Bluetooth Headset
In this post I have explained a 200 + 200 watt wireless home theater circuit using a class D amplifier and a Bluetooth headset as the wireless module. The idea was requested by Mr. Sudipta Mandal. Technical Specifications I want to make my home theater wireless. My home theater model is Sony SRS-D9 2.1 channel. […]
Microwave Sensor or a Doppler Sensor Circuit
In this article we study the microwave sensor IC KMY 24 and try to understand its main features and its pinout implementation details. How Doppler Sensor KMY24 Works The KMY24 microwave sensor module is designed and built on the concept of Doppler effect. When correctly configured it radiates a low power microwave signal of around […]