This system, composed of two opto-insulated circuits, allows the data transmission per infra-red network device between two computers. For example, someone can transfer his files starting from his desktop computer to his laptop computer without using any cable. How By using infra-red diodes. We have to connect a circuit to the 10/100 Mbps network
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card of both computers by using a very small network cable (can be smaller than 10 cm). One of the two extremities of the cable must be removed to allow the wire connections. We must pay attention when we do the connections. The Tx+ output of any network card is connected to the input of the Rx+ of the other with the cable. It`s the same way for the Tx- and the Rx-. We have to supply the circuits with two sources of voltage. I recommend to use a 9V battery and the +5V output of the power supply for the desktop computer. The ground of the power supply must be connected to the ground of the circuit. For the laptop computer, I recommend to use a 9V battery and the 4. 5V battery. All digital components must be of the 74H series because these have short response times (less than 2. 5 ns). All the GND pins of the logic integrated circuits must be connected to the ground of their circuit and their Vcc pin must be connected to the +Vcc of their circuit.
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....
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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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