H BRIDGE motor control using transistor #flybackdiode #voltagespikes

IN THIS VIDEO WE MAKE H BRIDGE USING BC547 & BC557 AND USING FOUR DIODES IN A VERY EASY WAY AND EXPLAIN EACH PART WITH VOICEOVER .

This project and circuit finds a huge application in the area of robotics to control motor direction. This circuit uses the basic concept of transistors as a switch. Transistor with proper biasing can be used as switch, i.e. it can be used to toggle between the two states of a switch on or off. This configuration of transistor has been used in H-bridge to drive a motor in both clockwise and anticlockwise direction. This circuit derives its name from the English alphabet “H”, which closely resembles the circuit pictorially.
H-bridge:-
In H-bridge four npn transistors (BC547) are used in the switch mode configuration. The emitter and collector of transistors T1 & T2 and of T3 & T4 are connected. The collector of T1& T3 is connected to VCC and emitter of T2& T4 is connected to ground. The base of T1 & T4 and T2 & T3are connected through resistors. The motor is connected as shown in the figure2. When high signal (logic 1) is given at A and low (logic 0) at B, the transistor T1 & T4 will behave as closed switch andT2 & T3 will behave as open switch. As a result of which the current will start flowing from Vcc to T1 to motor to T4 to ground and motor will start running in one direction.

Similarly if B is given high signal and A low, then the transistors T1& T4 are in the cut off state and T2 and T3 are in the saturation state i.e., T1 & T4behave as open switch and T2 & T3behave as closed switch and motor rotates in other direction. We should avoid giving either high or low to both A & B simultaneously.

FLYBACK DIODE
A flyback diode is a diode connected across an inductor used to eliminate flyback, which is the sudden voltage spike seen across an inductive load when its supply current is suddenly reduced or interrupted. It is used in circuits in which inductive loads are controlled by switches, and in switching power supplies and inverters.

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#motorcontrollerbc547
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#bc547projects
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Видео H BRIDGE motor control using transistor #flybackdiode #voltagespikes канала Silent Maker