LED Circuits

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16-300 MHz Testing Colpitts oscillator
Audio Controlled Mains Switch Circuit
Whats the third wire on a piezo buzzer
sine wave generation with fast pwm mode 2525
sound via laser light
Temperature Logger and Standalone Voltage Logger
X’Mas LED Decoration circuit
300 to 1500kW straight with a generator of Lightning
555 Touch-sensitive switch circuit diagram
A long light power control circuit



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