![]() ![]() The transistor 2N2907 is complementary pair for 2N2222 and has identical specs as above, however being a PNP type the associated polarities are exactly opposite.The value of the current limiting resistor may be calculated by using the formula explained at the end of this article.The base goes to the source voltage or the triggering voltage via a current limiting resistor.The load which needs to be switched must be connected in between the collector of the transistor and the positive supply, that is, the positive lead of the load goes to the positive supply while the other lead of the load gets connected to the collector lead of the transistor. The pin out or the leg that’s marked emitter must be connected to the negative line of the supply rail. The transistor starts to work when the switch is closed, and the LED ON and OFF intervals are controlled by the resistance value. This may be done by following the below explained steps: The 2N2222 transistor is used as a switch in this circuit, with an input resistor driving the transistor and another resistor driving the LED. This blog covers the basic information of PN2222 from its pinout, features, equivalents to its use, working principle, and its difference between 2N2222 and so on. Configuring the device practically in electronic circuits for any relevant application: PN2222 is a conjoint NPN bipolar junction transistor which is used for common persistence less power intensifying or swapping circuits applications. For a 2N2222A, the figures are 1.2 and 2 volts respectively. With collector current exceeding 500 mA, the base optimal trigger voltage becomes 2.6 volts. The base-emitter saturation voltage for 2N2222 is typically 1.3 volts 15 mA, when the collector current is around 150 mA.Maximum frequency handling capacity or the transition frequency is 250 MHz for 2N2222 and 300 MHz for 2N2222A.hFE or the dC current gain of 2N2222 transistors will be around 7 5 minimum, at voltages near 10, with 10 mA collector current. ![]()
0 Comments
Leave a Reply. |