12V Battery Level Indicator Circuit using IC LM3914 show how much battery power is left. It is good for devices using 12V battery and help avoid sudden power OFF. IC LM3914 senses voltage and control 10 LEDs. It show in dot mode or bar mode. It work with 3V to 25V power supply. LEDs light […]
How to Build a LiPo Battery Charger Circuit
LiPo battery are used more now a days, light stores lots of energy and can recharge. But charging we must be careful and accurate. Need special circuit that stops overcharge or battery that can get damaged or catch fire. Then this How to Build a LiPo Battery Charger Circuit is easy that uses IC 741 […]
Simple DIY Battery Charger Circuit using Center Tap Transformer
Simple DIY Battery Charger Circuit using Center Tap Transformer is a useful device. It fills power in rechargeable battery. This article show how to make easy DIY charger using center tap transformer which is good for charging lead acid battery. It can charge any 12V battery and even a car battery. Circuit is simple and […]
Smart Vehicle Headlight Brightness Controller Circuit
Smart Vehicle Headlight Brightness Controller Circuit is a cool auto system. It changes headlight brightness auto by checking outside light. It helps driver see better and safe at night or in tunnel. Circuit uses photo-transistor, potentiometer, diode, relay and audio transistor to check light and switch high and low beam easily. Circuit Working: Parts List: […]
Simple Shock Sensor Alarm Circuit
In this Simple Shock Sensor Alarm Circuit we can feel vibration or shock, which then makes loud sound with piezo buzzer. This circuit is easy to make and can be used at home, in car and in many places. It is good for security, stop theft and in feel movement. Main parts of the circuit […]
Building an FM Transmitter Circuit for Car Stereo
Building an FM Transmitter Circuit for Car Stereo is easy way to play music from phone, MP3 or Bluetooth on car FM radio. It sends sound on FM frequency and car radio catches it like normal station. Circuit is simple to use and is good for playing music or podcast in car without special stereo […]