What is a Darlington transistor used for?
The Darlington transistor circuit lends itself to use in small driver chips for LEDs and other small devices. The high current gain of the Darlington circuit means that these small driver chips can be used to interface LEDs and other devices to logic chips.
What does a TIP122 transistor do?
Where to TIP122: This transistor is known for its high current gain (hfe = 1000) and high collector current (IC =5A) hence it is normally used to control loads with high current or in applications where high amplification is required.
What is a TIP120 transistor?
The TIP120 is an NPN Power Darlington Transistor. It can be used with an Arduino to drive motors, turn lights on, and drive other high power gadgets. The TIP120 acts as a power broker or gatekeeper between the Arduino realm and the high power realm composed of the PC fan and its battery pack.
Why Darlington pair is used?
One transistor circuit configuration that can be used to very good effect in many instances is the Darlington Pair. It is primarily used because it offers a particularly high current gain and this also reflects into a high input impedance for the overall Darlington circuit when compared to a single transistor.
Where Darlington pair is used?
The Darlington pair is mainly used for It has high current gain β; (equal to the product of current gain of individual transistors) and is useful in applications where current amplification or switching is required. It also has high input impedance and low output impedance.
How does a tip122 work?
It works like an ordinary NPN transistor, but as it consists of a Darlington pair it has a decent collector current assessment of nearby 5 amperes and it’s gain is around 1000. This transistor can bear 100 volts around collector and emitter terminals due to this feature it can be used for high loads.
How does a TIP120 transistor work?
TIP120 comes with a Darlington pair in which two transistors are connected in such a way, the current amplified by the one transistor is being amplified further by the other transistor. This configuration features much higher current gain as compared to if each transistor is taken separately.
Can I use BC547 instead of TIP120?
TIP120 equivalent Given below is the list of popular transistors which can be used as a replacement for TIP120: TIP122 is a good alternative to TIP120. Whereas 2N3904, BC547, BC538, 2N4401, and 2N2222A are low power options.
How do Darlington transistors work?
A Darlington transistor acts as a single transistor with high current gain, it means that a small amount of current is used from a microcontroller or a sensor to run a larger load. The below Darlington circuit is built with two transistors shown in the circuit diagram.
What kind of transistor is tip122 Darlington pair?
About TIP122: The TIP122 is a Darlington pair NPN transistor. It functions like a normal NPN transistor, but since it has a Darlington pair inside it has a good collector current rating of about 5A and a gain of about 1000. It can also withstand about 100V across its collector- Emitter hence can be used to drive heavy loads.
What are the features of a tip122 transistor?
TIP122 transistor has a lot of good features like 5A collector current, max emitter-base voltage is 5V, max collector dissipation is 65 watt, minimum & maximum current gain is equal to 1000. This transistor is designed to use as a switch and for amplification purposes.
What is the Order of tip120 and tip122?
November, 2014 −Rev. 9 1Publication Order Number: TIP120/D TIP120, TIP121, TIP122 (NPN); TIP125, TIP126, TIP127 (PNP) Plastic Medium-Power Complementary Silicon Transistors Designed for general−purpose amplifier and low−speed switching applications.