Free Electronics Circuits, Projects and Ideas
Low-Cost Automatic Solar Lamp Circuit Using Transistors
Simple Soft Start Circuit Using BD875 Transistor and 12V Relay
Crystal Tester Circuit: Verify Quartz Crystal Oscillator is Functioning
Reverse Polarity Switch Wiring for DC Motor
Diode Temperature Sensor Circuit
Simple Light Sensor Circuit using BC547 Transistor
BC547 Relay Circuit
Simple 3V DC Power Supply Circuit Using LM317 Voltage Regulator
12v low battery indicator using Two Transistors
Inverter using 555 Timer IC and TIP31 Transistor
Simple Sound Amplifier Circuit using Single Transistor
Simple Rain Detector Alarm Circuit
AC Blown Fuse Indicator Circuit
Simple LDR Circuit to Detect Light
Simple LED Chaser Circuit
Simple Inverter Circuit
