The Fire Alarm Circuit using Thermistor and IC 555 help to find and warn people about fire, as this design uses IC 555 and thermistor to check temperature change and maybe fire. Furthermore, thermistor is special part which feels the temperature change, also circuit is easy to make and thermistor changes resistance with heat and […]
Transistor Circuits
Long Range IR Transmitter Circuit
Compared to basic circuit this Long Range IR Transmitter Circuit can send IR light farther using easy parts, also its main idea is to make IR LED blink light in pulses. Furthermore, most IR receivers catch specific frequency made by IC 4047. Using more LEDs together or stronger LED gives more IR light, so with […]
Simple Solenoid Driver Circuit
A Simple Solenoid Driver Circuit is a setup to control solenoid using low voltage signal; solenoids are like magnets and they change electric power into movement. Furthermore, they need more voltage than small digital parts like microcontrollers can give, also the driver works like a switch and it lets small signal turn big current ON […]
Logic NAND Gate Circuit using Transistors
Logic NAND Gate Circuit using Transistors is very important in digital logic, as it work opposite of AND gate. Output is HIGH when any input is LOW. People call the NAND gate a universal gate because it can implement all other basic logic gates, including AND, OR, and NOT. Truth Table for Logic NAND Gate: […]
Single Push Button ON OFF Relay Circuit
We can make Single Push Button ON OFF Relay Circuit with one push button to control motor or light. Press button and relay will turn ON and then press again and relay will turn OFF; hence, there is no need of microcontroller or timer IC, so use only some transistors and one capacitor. Circuit Working: […]
100 Watt Audio Amplifier Circuit using Transistors
This 100 Watt Audio Amplifier Circuit using Transistors make sound loud and it uses transistors to give 100 Watt power to speaker. Furthermore, input is small audio signal in which circuit boost and drive big speaker, also circuit is good for music system, home theater and for party sound. Circuit Working: Parts List: Components Values […]