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Used in Rectifier Circuits & DC Inverters.

These transistors are used in Motor drive circuits like VFD or variable frequency drives.

Used to switch several loads simultaneously.

It is typically used in automation & embedded projects.

Because of its fast response time, it can be used for pulse width modulation.

It is used for PWM due to its quick response.

This transistor can be used as a switch for automatically switch ON/OFF any appliances.

This kind of transistor is mainly used for amplifying current.

So, the 2N2222 transistor is the best choice for switching high current loads.

As compared to the normal NPN BC547 transistor, the 2N2222 is extremely similar, but 2N2222 allows 800mA of collector current & also 652mW of power dissipation which can be utilized for driving larger loads as compared toBC547.

The applications of the 2N2222A transistor include the following.

It does not function efficiently like a relay or electrical, mechanical switches.It is extremely hard to replace with new ones by unsoldering.Faults cannot be found easily due to small size.The main disadvantages of using the 2N2222A transistor include the following. So this capability will make the device ideal in the applications of linear amplifiers.This transistor switches the load current with 800 mA through it, which is high as compared to others.It is capable of handling fairly high magnitude currents as compared to other similar transistors.In electronic circuits, most of the switching applications can be done by using this transistor.This is the most commonly used type of transistor.The main advantages of using the 2N2222 transistor include the following. For the 10mA collector current & for 10V, the DC current is approximately 75mA.The maximum tolerance is 60V across its two terminals like base & collector.The maximum handling frequency capacity is 250MHz.The transistor’s completer power should not go above 500mW.The key characteristics of 2N2222A are discussed below. The applications of this circuit mainly include lamps, locks, doors & safety boxes.

Once the touchpoints in the circuit are touched, then a small number of current supplies throughout the circuit to activate the LED. A variable resistor with a 200KΩ value is used to regulate the circuit sensitivity. If you use a relay in the circuit in place of LED & resistor after that the same value of relay you have to use like the i/p voltage. This simple circuit is very helpful to turn on a relay in place of LED & resistor to connect any appliance or load to operate through it. The touch switch circuit using the 2N2222A transistor circuit is shown below. These three configurations are very helpful for amplifying voltage, current & power very easily in different applications based on the requirement. The configuration modes of the 2N2222 NPN transistor include common emitter (CE), common collector (CC) & common base (CB).

The voltage from the collector terminal to the base is 75V once the emitter terminal is open.

The voltage from the emitter to the base terminal is 6V once the collector terminal is open.The voltage from collector terminal to emitter is 50V once the base terminal is open.The features & specifications of the 2N2222 NPN transistor include the following. Pin3 (Emitter): The emitter pin is the third pin of the transistor & it is used to drain out the complete current of the transistor.The main function of this pin is to control the current from emitter to base.

Pin2 (Base): The base pin is a control pin & it is a second pin of the transistor.The main function of this pin is to provide transistor current toward the o/p load. Pin1 (Collector): This is the first pin of the transistor & it is an o/p pin.