Ultrasonic welding generator Push Pull Amplifier | Easy way to check the module.

In practice, the output of the transformer has to be very high so So we use two sets of five transistors connected in parallel to form a high-power push-pull amplifier as you see here. There is a problem with this, that all the transistors do not work together or turn on and off and the timing is different. Getting all five transistors to work in parallel and keep an equal current flowing can be a tricky business. To solve this, the emitter of each transistor is connected in series with a half-ohm 5 watts resistor, and the base of each transistor is connected in series with a 4.7-ohm one-watt resistor. the same is done with the transistors on the other side. It is also required that all resistors are connected to the base. are of the same value. And all the resistors across the ammeter are also of the same value. and be of 1 per cent tolerance. Their gain and amplification factor HFE should also be the same. And in this way, the performance of the transistors is improved and they start to work equally. Hope you understand the whole thing by now. Now we will see how to check it. How easily can this model be checked and how can it be made even easier with the video on by simply removing its connector and checking the five conductors on the video? Connections are such that all the transistors can be checked here when we feel that there is not checking properly or any side transistor is feeling bad in the sides. Then we can open the module and check the transistors one by one. and can make it possible to repair the module by replacing damaged transistors.
Chapter
0:00 - Intro
1:34 - understand the lord amplifire
2:42 - Blue wire
3:02 - Other side
3:21 - DMM

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