In this child crying monitor circuit when the baby wakes up in their room, the parents are immediately notified, even if they are in another room of their home. A […]
Search Results for: transmitter
IC 4049 Datasheet, Pinout Function, Application
IC 4049 is a CMOS hex inverting buffer IC that has six independent inverters or NOT gates. It is commonly used in various electronic circuits such as oscillators, timers, and […]
Morse Code Practice Oscillator Circuits
In this article we will explore 3 different Morse code practice oscillator circuits, for generating exact replication of Morse code signals in the form of dots and dashes. Contributed By: […]
Whistle Activated Switch Circuit
In this post we will learn how to build a simple whistle sound operated relay circuit, which can be used for switching ON/OFF a 220 V load through whistle sounds. […]
What is a Gunn Diode? How it Works?
Gunn diodes are semiconductor devices which are used to generate low-power microwave signals in a simple and low-cost manner. These have been in use for more than 60 years now. […]
Ultrasonic Burglar Alarm Circuit
An ultrasonic burglar alarm circuit is an electronic device which transmits ultrasonic waves to detect the movement of an intruding person. The ultrasonic waves hit the intruder and the reflected […]