Transmitting Sound on a Light Beam
Build a sound to light converter.
Assemble a simple circuit which amplifies an audio signal, then feeds it through a high intensity LED.
Build a Hydrogen Generator.
Build a simple device to separate hydrogen from water through electrolysis.
Timer Frequency Control
Build a Timer Circuit.
Build a simple siren to show how resistance and capacitance control a 555 timer.
Build a Lorentz Force motor.
Demonstrates Lorentz Force by building a simple motor.
Small Signal Motor Control
Build a light activated motor controller.
Show how to use a CdS photocell to measure intensity of light.
Build a light sensor circuit.
Show how a CdS photocell can be used to control a circuit.
AM Radio Transmission
Build an AM transmitter.
Demonstrate how AM radio waves are produced.
Build a plastic cup speaker.
Show the relationship between electrostatic and magnetic forces.
AM Radio Reception
Build a simple AM reciever.
Teach about AM modulation, tuned circuits, AM detection or demodulation, and audio amplification.