The post explains a voltage high current doubler circuit which will almost double the voltage that’s been applied at the input (up to 15V max), and also it becomes specifically […]
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5 Simple Alarm Circuits for Protecting your Home/Office from Theft
The following article discusses a few very simple intrusion detector circuits, or ant-theft alarms. The presented designs are easy to build yet extremely effective with the functions. How the Circuits […]
How to Connect a Relay through an Opto-Coupler
The following post describes how to drive a relay by using an isolated method, or through an optocoupler device. We will learn three methods, first method is by connecting relay […]
Infrared (IR) Motor Remote Control Circuit
The article discusses a simple infrared (IR) remote control circuit which is configured for operating a DC motor in response to the switching made from a standard IR remote handset such as […]
Using an NTC Thermistor as a Surge Suppressor
A Negative Temperature Coefficient (NTC) thermistor is a device which is able to suppress switch ON current surge due to its initial higher resistance at room temperature. However, as the […]
Laser Beam Light Activated Remote Control Circuit
The following post illustrates a simple light toggled/operated remote control circuit, which can be activated by an ordinary flashlight or more effectively through a laser beam unit (key chain type). […]