In electronics H-bridge circuit refers to a configuration consisting of four individual switching devices like transistors or mosfets, such that these can be switched through external discrete signals from respective stages of the involved control circuit. While switching, the complementary pairs from each of the arms switch together, meaningthe NPN device from the left arm and the PNP
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device from the right arm of the bridge conduct together in response to an external applied signal. The arrangement generates a push pull effect in the connected transformer winding of the inverter which in turn generates a required one full cycle of AC at the output of the transformer. The special arrangement of the devices make it possible for driving the devices through two individual signal sources, one which decides the switching rate of the output while the other decides the RMS value of the output from the transformer. Transistors T2 and T4 ae fed with the PWM pulses which switch ON together, however when T1 is conducting, T2 should remain shut OFF and similarly when T3 conducts T4 should remain OFF, the two diodes from the respective NAND gates takes care of the issue and allow only the relevant transistors to carry out the PWM switching. Thus the NPN transistors are responsible for producing the regular 50 or 60 Hz pulses while the PNP transistors are responsible for breaking the square waves as per the PWM sections.
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....
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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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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....
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