This project is for Simple Gold Detector Circuit and it uses magnet and electric to find metal and even gold. Here, the electric goes fast back and forth and this make magnetic field in coil; and when metal come close then electric changes. Also, it is an fun project to learn about metal detector but […]
Security and Protection
Simple DC High Low Voltage Cut Off Circuit
If our device need right DC power to work safe then this Simple DC High Low Voltage Cut Off Circuit work like a guard. Also, if battery is too low then circuit stop power to save our device and if battery is too high then also circuit stops power to protect. Hence, this circuit keep […]
Simplest Blown Fuse Indicator Circuit
This Simplest Blown Fuse Indicator Circuit shows if fuse is good or bad without checking it by hand; also if fuse is okay then green LED turns ON. Furthermore, if fuse blows then green LED goes OFF and red LED turns ON and that means fuse is bad and needs to change. Circuit Working: Parts […]
Simple Counterfeit Money Detector Circuit
Simple Counterfeit Money Detector Circuit is like smart light, it uses UV light to show secret mark on real note. Furthermore, it also uses magnetic sensor to feel the special ink and sometimes it uses IR light to see real money pattern. If the tool does not detect any special features, the note may be […]
Simple Light Activated Alarm Circuit
This Simple Light Activated Alarm Circuit is like very sharp nightlight, it have small part called LDR which work like a tiny eye. Furthermore, when light goes away fast like someone is moving near circuit it make sound or light happen to warn us. Moreover, it also uses other parts like transistors, resistors, capacitors to […]
Simple High Temperature Alarm Circuit using IC 555
Simple High Temperature Alarm Circuit using IC 555 uses one special chip called IC 555 which works like a temperature guard; also it keep checking temperature always. Hence, if its too much hot it make alarm sound like buzzer and tell us something is getting too hot, so we can know early and fix before […]