This Simple 2 LED Battery Status Indicator Circuit work like gas meter but for battery, as it uses LED lights to tell how much power battery still have. One light mean battery is full another light mean half power and last light mean time to charge. Also, it use small parts like resistors, Zener diodes […]
Indicator Circuits
Water Level Indicator Circuit with Digital Display
No need to check water with normal stick, because this Water Level Indicator Circuit with Digital Display use sensor to check water level. Then it show number from 0 to 9 on small screen, like mini calculator; so we can always see what level the water is in the tank. Hence, with this circuit, there […]
Simple Display Driver Circuit
Have anyone ever wondered how the screen on a calculator or phone shows numbers? if yes, then we need a small translator. Simple Display Driver Circuit is like that translator, with tiny computer, microcontroller which gives information and then driver change it to special code for display. Therefore, this code tell display which light or […]
Simple Earth Fault Indicator Circuit
Simple Earth Fault Indicator Circuit is like safety guard for electric system, as it checks if electric connects to ground by mistake, like when bad wire touch metal box. Also, this is very important because if there is an electric leak the machine may break and cause a fire or may shock people. Circuit watch […]
Mains AC Transients Indicator Circuit
Think like anyone have one small device to check its home electricity going up and down; then this Mains AC Transients Indicator Circuit is same like that but only for sudden high voltage. These high voltage come from lightning and big machine turning ON or power change, also this circuit have one sensor who is […]
Blown Fuse Indicator Circuit with Flashing LED
No more squint eyes at fuse! This small smart circuit for Blown Fuse Indicator Circuit with Flashing LED got one blinking LED like little spy for the electronics and when all seems good an LED will stay bright. But if fuse go bad maybe too much power or something weird then the LED will start […]