This ultrasonic remote control circuit can be used to switch and control any appliance ON/OFF through a relay in the receiver circuit. Written by: S.S. Kopparthy Using Ultrasonic Waves This […]
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How to Make Ultrasonic Directive Speaker Circuit
The post explains the construction of a ultrasonic directive speaker system also called parametric speaker which may be used to transmit an audio frequency over a targeted spot or zone […]
Ultrasonic Weapon (USW) Circuit
The post discusses a simple ultrasonic weapon circuit also called USW, using very ordinary parts such as IC 555 and a few other passive components to generate the required ultrasonic […]
How to Connect and Use RCWL-0516 Microwave Motion Sensor
In this article we will comprehensively learn about the RCWL-0516 a microwave proximity motion sensor which uses Doppler radar. Here, we will discuss the following points: What is RCWL-0516 It […]
Electronic Measuring Tape Circuit using Ultrasound
Everyone is familiar with the mechanical measuring tape made of wood to measure human height. We offer you an original electronic version that operates based on the use of ultrasound. […]
12 Simple IC 4093 Circuits and Projects Explained
The 4093 is a 14-pin package containing four positive-logic, 2-input NAND Schmitt trigger gates as shown in the following figure. It is possible to operate the four NAND gates separately […]