PIR Motion Sensor Circuit with 555 Timer
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PIR Motion Sensor Circuit with 555 Timer IC

Let’s designing a PIR motion sensor circuit that uses a Passive Infrared (PIR) sensor to control a buzzer through a 555 timer for motion detection applications. Here’s a step-by-step guide to creating this circuit: Components Needed: PIR sensor 555 timer IC Buzzer Resistors (various shown below) Capacitors (various shown below) NPN transistor (e.g., 2N2222 or […]

Current Switching Circuit with Arduino
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Current Switching Circuit using Arduino

Hello friends, Current Switching Circuit using Arduino? Do you know how to switch between two power supplies or current sources using Arduino and Relays? Welcome to another interesting article, suppose you want to operate a device that can be operated based on the room temperature or a temperature inside the device, let’s understand this with […]

over voltage protection circuit diagram
Electronics tutorial Protection Circuits

Over Voltage Protection Circuit Diagram Based on Relay

In this tutorial, you will learn how to make this over-voltage protection circuit. It requires fewer components and is very effective in overvoltage conditions. It will cost you around 3$ to 5$ depending on the quality of components. Overvoltage occurs when the voltage in a circuit is raised above its upper design limits. This condition […]

Short circuit protection using relay
Electronics project Electronics tutorial Protection Circuits

Short Circuit Protection Using Relay For Batteries

In this tutorial, we will see how to make a short circuit protection using Relay. Many times accidentally terminals of batteries and other power supplies get short-circuited. Due to this, they get hot and start degrading. In the case of lithium-ion or lithium-polymer batteries, they may catch fire due to short-circuit or even get blast. […]