Free Simple Circuit Diagram
Stroboscope is used to measure the speed of rotation, using the effect of strobed light, where a moving object will be perceived as stationary object if the light is strobed fast enough relative to the movement speed. When applied to a rotating object, a mark on the object will be perceived as not rotating if the frequency of the strobed […]
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The idea of a color organ is that any sound, including musical sound, can be transformed into light. As stated by wave theory, both music and light have similar properties: frequency. Any note, or combination of notes (chord) can be then mapped to a color. A low frequency sound can be associated to red or near infrared, and high frequency […]
Read moreBelow is a Courtesy Light Extender for cars. When a door is closed in a car, it extends the ON time, so the passenger can see where he/she is sitting. Here is the schematic diagram of the circuit: The light normally goes off immediately when door switch is opened, but the circuit takes over and allows current to flow because […]
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The mains supply can be conveniently reduced with no heat dissipation by the reactance of C1; then rectified by D1 (1N4007) and D2 (1N4007) and clamped to 24V by the Zener Diode D3 (24V) due to the very low current consumption of this circuit. The built-in microphone pick-up the music diffused by the loudspeaker(s) of any type of media player […]
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