A very simple yet highly sophisticated modified sine wave inverter circuit is presented in the following post. The use of the PWM IC TL494 not only makes the design extremely […]
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Simple Ultrasonic Sound Sensor Alarm Circuit using Opamp
This article discusses a simple ultrasonic sound sensor alarm circuit which may be appropriately set for detecting sound pressures well above the normal human listening capacity, that may range from […]
How to Make a GHz Microwave Radar Security Alarm Circuit
The post explains a GHz microwave radar security alarm circuit which is designed to detect an intruder within the critical zone only while it’s moving, static objects produce no effect […]
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 […]
How to Make Ultrasonic Remote Control Circuit
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 […]
Modify Human Speech with this Digital Voice Changer Circuit
The post explains a voice modulator circuit which will change or transform an individuals unique voice into a completely new form. The new voice will be different to the original […]