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Considered how to quickly select an analog for any transistor in an electrical circuit. Often, when assembling an electronic device according to a circuit, we can find that it uses a transistor that has long been discontinued or some rare specimen, so you need to find a replacement for it. In most cases, it is enough to focus on the following parameters: voltage, current and current gain. The value of the voltage in the vast majority of cases can be determined by directly looking at the circuit. Often it does not exceed the supply voltage. We can determine the current according to Ohm's law, focusing on the resistance value of the resistor in the collector circuit. If the current gain of a bipolar transistor differs from the recommended one, then it is enough to change the resistance of the resistor in the base circuit. Do-it-yourself acoustic switch: • How to read and understand electrical s... #transistor #analog #electronicsclub