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You can use a PNP or an NPN transistor in a fire alarm circuit. Both will work. It all depends on how you want to energize the alarm, and with what polarity of signal.

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14y ago

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When a PNP transistor is connected in a circuit it can be used as a power amplifier because?

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When a pnp transistor is connected in a circuit you can be used as a power amplifier because?

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A PNP transistor is connected in a circuit so that the collector-base junction remains reverse biased and the emitter-base junction is forward biased This transistor can be used as a power amplifier?

Yes1


When a PNP transistor is connected in a circuit in the manner it can be used as a power amplifier because?

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