Simple Light to Frequency Converter Circuit using Timer IC 555 changes light brightness into frequency signal, it is useful for light measure, optic sensing and automation. Also, circuit uses IC 555 timer in astable mode and photodiode to catch light, as more light means more frequency which is easy to see link between light and […]
Mini Projects
Automatic Night Lamp Circuit using Battery Power
Automatic Night Lamp Circuit using Battery Power works on battery and saves energy, it turns ON in dark and OFF in light. Furthermore, this circuit is good for bedroom, hallway, stairs and gives light at night and it also uses two 1.5V batteries and has 7555 timer chip, LDR as light sensor and LED as […]
Simple Battery Charging Indicator Circuit using IC LM393
Simple Battery Charging Indicator Circuit using IC LM393 shows if battery is charging or not; it helps stop overcharge and through this charging becomes safe and better. Also, main part is LM393 comparator IC and it turns ON LED to show charging; further, circuit is easy and cheap and is good for checking 12V lead-acid […]
Simple Battery Eliminator Circuit using IC LM317
Simple Battery Eliminator Circuit using IC LM317 gives steady DC power with no need of normal battery, as it is good for small devices needing stable voltage. Furthermore, this article show how to make simple battery eliminator using LM317 IC and we can also show circuit to replace 9V battery and we use this circuit […]
Simple Wall Adapter to Battery Changeover Circuit
Simple Wall Adapter to Battery Changeover Circuit is very useful for battery systems, as it help to switch power between wall adapter which is main and battery which is backup without stop power. So device get power all the time with no break. Furthermore, LTC4412 IC is very important part of this circuit and it […]
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. Furthermore, this article show how to make easy DIY charger using center tap transformer which is good for charging lead acid battery; also it can charge any 12V battery and even a car battery. Circuit is […]