Do transistors break the law of conservation of energy?

In a transistor, that small input current does not produce a large output current, it controls a large output curent. read more

Transistor do not break the law of conservation of energy. Actually transistor is not amplifying the signal. Transistor is a variable resistor. When input voltage applied to Base, it changes the resistance between the Collector and Emitter. To understand how an amplifier works, you need to first understand how a Voltage Divider circuit functions. read more

Explain why the law of conservation of energy is not violated in a step-up transformer when the primary voltage of 60 V induces a secondary voltage of 240 V. read more