Circuit wire two-color music lantern controller is shown in Figure 1-44 below. a, b terminals at both ends of the speaker according to the speaker, the speaker from the sound o
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f the audio signal by the sensitivity adjustment potentiometer RP and current limiting resistor R is applied to both ends of the color light emitting diodes LED to flash with the rhythm of the music. LED and photoresistor RG group into simple optocouplers, so RG resistance with the LED will light off level of change. When the music sound weak or interrupted when, RG showed a high resistance, the triac trigger voltage vs non-blocking state is due wattage lights on much larger than the group Hl set wattage H2, so most 220V AC voltage landing in H2 ends, so H2 glows green when close to normal, and Hl only a faint red light; when the loud music Shi, LED light. RG showed low resistance, vs AC trigger signal is obtained and opened, then H2 was vs short circuit does not emit light, Hl is normal hair red. So with the rhythm of the music and downs, Hl, H2 two lights alternately emit light and shade of red, green, two shade.
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
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The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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