What Is the Role of the BC548 Transistor in a Piezoelectric Energy Harvester?

AI Thread Summary
The BC548 transistor in a piezoelectric energy harvester primarily serves to regulate current flow rather than amplify signals. Its role is crucial in ensuring that the current remains unidirectional, which is essential for effective energy harvesting. The circuit design includes a voltmeter to measure the potential difference across capacitor C3, indicating the energy being harvested. While some participants initially suggested amplification as a function, the focus shifted to the transistor's role in current management. Understanding this function is vital for optimizing the energy harvesting process.
menloon
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Yesterday I received a schematic diagram from my lecturer, it about piezoelectric energy harvester. Well, I'm not sure what the function of the transistor BC548. I think the transistors function as amplifier. Am I true? If someone could explain it to me detail, that will be better. Thank you and sorry for my broken english.
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I doubt they are amplifiers if the intent is to harvest energy. I bet the intent is more related to keeping the current flowing in one direction.
 
The voltmeter is effectively measuring the potential difference over C3.
 
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