Rw a77s power is the use of integrated circuit fabrication Ji-day double touch light switch, a special circuit point J. Cases the same. Bong electromechanical source transformer T Buck, v]) 1-VD4 rectifier
Click here to download the full size of the above Circuit.
and C filter, output 1 2V DC voltage supply TWH8778 electricity. usually. TWH8778 control terminal EN That feet without voltage, the internal circuit breaker switch Ji, the relay K is not action, lamp fi / f light. If you touch what Ml "ten f" electrode sheet duo are a few body induced signal to _ diode VT1 conduction. So manifold feet high, ten F off internal circuit is closed, that is, O feet and , pin connected, the relay K is energized, its contact station kl l0 together, lamp E powered light. In this case , feet high through resistor R feedback to the control terminal feet, so that is after people leave the hand pads, integrated block internal switching circuits can maintain close contact state, it is possible to reliably protect the relay destroy hold pull. When the light on, just hand touch at M2 "given" electric pull films, this time diode conduction will wr2 manifold control terminal feet on the ground short, so make the internal manifold even switch off the circuit, , @ pin output low, following IU destroy K release, contact kl jump Ji restored, turn off the lights. t "At the same time, , feet low level will pass through the feedback resistor R, the control terminal feet even after the staff left Mv electrode sheet still remains low start circuit termination in the off state. Yun circuit requires three tubes and relays and F. Pi same.
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.....
characters left: