This is an implementation of the L298 to drive motors and inductive loads up to 4A continuously. Initially the L298 contains two separate channels, each one capable of driving 2A loads. Connecting them in parallel as in the schematic makes a single 4A driver. The two transistors Q1 and Q2 act as an OR gate enabling the L298 if any of the two signa
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ls W1 or W2 are high. If both W1 and W2 are low (logic 0), the driver is disabled and provides a high impedance on its output, causing an eventually connected motor to move freely with its inertia. C1 and C2 are 10 nF decoupling capacitors. D1 to D4 are flyback diodes. Their forward current should correspond with the the expected load. The two leads of the motor are directly connected to J1. The circuit can be powered with 9V to 35V Here figure 1, is an implementation of this circuit on a PCB. This an actual picture of the motor drivers we used in the ROBOCON 2007 competition. Notice how the heat sink is firmly attached to the driver. This protects the IC from eventually burning-up from stall currents.
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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