Simple Hartley Oscillator Circuit is like small sound maker with electric. It make smooth sound like whistle and does not stops. It is use coil with center tap like two coil join. One capacitor help keep sound going. Need one active part to make sound strong. This sound circuit is different from others. Circuit Working: […]
Simple Colpitts Oscillator Circuit
Think about a Simple Colpitts Oscillator Circuit like small kid on swing. Inductor and capacitor like swing are set as they make swing go back and forth. But swing can slow down. For that transistor come for help. It is like friend push a kid and keep swing move nice and steady. Same way Colpitts […]
Automatic Soap Dispenser Circuit
Automatic Soap Dispenser Circuit is like robot for soap. Inside it have a special plan like electric circuit with small parts. It has got sensor like small eyes, brain chip like microcontroller, and pump like tiny muscle. When sensor sees our hand its brain tell pump Give soap! and it gives the right amount. Circuit […]
Signal Injector Circuit
Signal Injector Circuit is small tool for electronics. It send special signal inside the circuit. This help to find problem or see where signal goes. Mostly it is used in sound and radio circuit but can use in other circuit also. Circuit Working: Parts List: Category Item Quantity Resistors 100k 1/4 watt 2 10k 1/4 […]
Simple LED Constant Current Circuit
Just think like water pipe filling bucket. Normal circuit is like set water pressure voltage and hope the bucket fills good. But with LED this Simple LED Constant Current Circuit is like smart nozzle. It keep water flow current same even if pressure changes a little. This way LED light up nice and live longer. […]
Simple Bedwetting/Wet Diaper Alert Circuit
Simple Bedwetting/Wet Diaper Alert Circuit is one special electronic helper! It know when someone pee in bed or diaper and then it make sound like doorbell ding ding! So parents or helper can know fast and come for help. Good for kids who pee in bed at night or people who need more help for […]