FIG VDI ~ VD4 form a bridge diode rectifier, a full-wave transform the 220V AC pulsating DC, all the way for the red, green and blue (ie HI ~ H3) electric lights, another way t
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hen by Rl0 buck, VD5 regulator and VD6 isolation and capacitor C7 CD4069 integrated circuit A power supply filtering. CD4069 inverter in six every two inverters (such as an inverter I and ) consisting of a ultra-low frequency oscillator, a total structure into three oscillators, their oscillation frequency is about 1 ~ 2Hz or so, when the oscillation Start-up time, the output terminal positive square wave pulse, through resistor R4-R6 so that the corresponding gap transistor VTI ~ VT3 conduction, when the transistor is turned on, its corresponding SCR (VSI ~ VS3) on opened, the corresponding lights (H1-H3) on the light-emitting, after the pulse, the transistor cut stop, SCR off, lights out. The lights will flash with the nozzle oscillation frequency of light. Three oscillator circuit resistance values of capacitance elements is identical, but the discrete element parameters, the parameters are different more or less total, the oscillator produces square wave oscillator frequency and phase are there are small differences, the same time light bulb which is entirely random. Such as in the production of the three light bulbs emitted onto the same piece of translucent frosted glass or opal glass shade, we see mixed light will be emitted three lights, according to the principles of its three primary color changing, very good looking.
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....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
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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