Contents
Why do we use PNP transistor?
PNP transistors are used to source current, i.e. current flows out of the collector. PNP transistors are used as switches. These are used in the amplifying circuits. PNP transistors are used when we need to turnoff something by push a button.
Why are NPN transistors more commonly used than PNP transistors?
And we already know that the mobility of electrons is far better than the holes. So n-p-n transistors are preferred as they amplify the signals. So the correct answer is that n-p-n transistors are preferred to p-n-p transistors because electrons have higher mobility than holes and hence high mobility of energy.
What is the reason for using lateral PNP transistor in integrated circuits?
What is the reason for using Lateral pnp transistor in Integrated Circuits? Explanation: During the p-type base diffusion for npn transistor, two adjacent p-regions are diffused to form the emitter and collector region of the lateral pnp transistor (n-type epitaxial layer is used as base of the pnp transistor).
What is the resistance of a passive buzzer?
Normally the resistance of active and passive buzzer is 16 ohm. It takes 100 m amps or more current therefore this could be easily operated from transistor because any NPN or PNP transistor can easily drive .5Amps current.
Can a transistor be added to a buzzer?
Through this signal pin, the active and passive buzzer is turned on or off any time. This buzzer has a limited voice if anyone wants to increase the sound or loud the voice then a transistor is added with this buzzer. Sometimes it takes more current that could not possibly form controller.
What kind of electronic device has a buzzer?
Introduction As a type of electronic buzzer with integrated structure, buzzers, which are supplied by DC power, are widely used in computers, printers, photocopiers, alarms, electronic toys, automotive electronic devices, telephones, timers and other electronic products for voice devices.
Can a Microcontroller interfacing with a buzzer?
Circuit diagram for buzzer module interfacing with pic16f877a microcontroller is shown below. As we have discussed in the above paragraph, signal voltages are required to turn on or off the buzzer in an active and passive configuration. These signals voltages are given with the help of any controller such as Arduino or pic microcontroller.