Battery Status Indicator Circuit using Flashing LED is an easy to make project, as the circuit uses BC547 and BC557 transistor, some resistors, capacitors, one diode and one LED. LED show battery condition by blinking light and it work with 6 to 12V battery and it is easy way to know battery health and it […]
Transistor Circuits
50 Watts Audio Amplifier Circuit
In audio amplifiers, achieving good sound quality with low power consumption and long-term reliability is very important. Therefore, this 50-Watt Audio Amplifier Circuit delivers strong audio output while operating efficiently and reliably over extended periods. Furthermore, it uses both MOSFET and BJT to make clear sound and can run 8 ohm speaker with full 50 […]
Fire Alarm Circuit using Thermistor and IC 555
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 […]
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: […]