npn-transistor

Control Raspberry Pi case fan on/off using CPU temperature

This schematic is a project in which we control the switching of bulb/lamp using Arduino and NPN TIP120 Power transistor (used as a switch).

Programmable DC power supply based on Arduino UNO WiFi Rev2

Cooling Raspberry Pi, which is running LibreELEC, by controlling the fan speed of a 5V fan.

Circuit diagram and explanation of a master-slave D-Type Flip-Flop (DFF) built with discrete BJTs and passive components.

This repository documents a circuit that uses a Potentiometer to control 3 motors which can be user in a head massager for relief in migraines

This project demonstrates controlling a relay using a PIC16F877A microcontroller. A push button connected to RB0 acts as the input. When pressed, the relay connected to RB1 is turned ON; when released, the relay turns OFF.

Programmable DC power supply based on Arduino UNO WiFi Rev2

In this repo, I've first Simulated all the 7 Digital Logic Gates in Spice Software & then physically Implemented on a Breadboard using Discrete BC547 Transistors.