How do I choose the right transistor
Choosing a Suitable PNP or NPN Transistor SwitchThe transistor’s maximum collector current must be greater than the load current.The transistor’s maximum current gain must be at least 5 times the load current divided by the maximum output current from the IC.Choose a transistor which meets the requirements and making a note of its properties.More items…•Mar 13, 2012.
Which transistor is used as amplifier
Thetransistor configurationsare classified into three types such as CB (common base), CC (common collector), and CE (common emitter). But common emitter configuration is frequently used in the applications like an audio amplifier.
Are NPN and PNP transistors interchangeable
Answer: NPN and PNP transistors are interchangeable if you remember one simple rule: A bipolar transistor is essentially two back-to-back diodes with the base being the common connection.
What does transistor mean
A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. … It is composed of semiconductor material usually with at least three terminals for connection to an external circuit.
How do transistors work
A transistor works when the electrons and the holes start moving across the two junctions between the n-type and p-type silicon. … By turning a small input current into a large output current, the transistor acts like an amplifier. But it also acts like a switch at the same time.
What is transistor equivalent circuit
R. RAMASWAMY* Different equivalent circuits are used to rcprcstnt a function transistor depending on the parameters chosen.
Can I use any transistor
So yes transistors are interchangeable, if the type (npn/pnp) and required specs match. … If the current through a transistor was only 10mA and they have a part that can tolerate 1A, well, that’s a bit much, and you can find a part that is more suited to what the circuit it.
Can we replace NPN transistor with PNP
Generally, the PNP transistor can replace NPN transistors in most electronic circuits, the only difference is the polarities of the voltages, and the directions of the current flow. PNP transistors can also be used as switching devices and an example of a PNP transistor switch is shown below.
How do you find the transistor equivalent
Step by step instructions:Choose a transistor of the same polarity: The first major selection criterion is whether the transistor is PNP or NPN.Select a replacement transistor of the same material: Most transistors are either silicon or germanium.More items…
Can I replace mosfet with transistor
Remove the base resistor from the circuit because we don’t typically need it anymore with a MOSFET. Connect the gate of the N-MOSFET directly to the activation voltage source. Keep the positive supply connected to one of the load terminals, and connect the other terminal of the load to the drain of the MOSFET.
Can IGBT replace Mosfet
Due to the higher usable current density of IGBTs, it can usually handle two to three times more current than a typical MOSFET it replaces. This means that a single IGBT device can replace multiple MOSFETs in parallel operation or any of the super-large single power MOSFETs that are available today.
What is meant by equivalent circuit
In electrical engineering and science, an equivalent circuit refers to a theoretical circuit that retains all of the electrical characteristics of a given circuit. … However, more complex equivalent circuits are used that approximate the nonlinear behavior of the original circuit as well.
What is the purpose of equivalent circuit
Equivalent Circuit. Equivalent circuits are used in order to approximate the experimental impedance data with the above-mentioned ideal or distributed impedance elements, both arranged in series and/or in parallel. Many electrochemical systems have been analyzed according to this procedure.
What are the 2 types of transistors
Basic Electronics – Types of TransistorsThe primary transistor is the BJT and FET is the modern version of transistor. Let us have a look at the BJTs. … The types of BJT are NPN and PNP transistors. … The FET is a unipolar device, which means that it is made using either p-type or n-type material as main substrate. … Source.
How can I buy a transistor
Choosing a transistor and base resistor for a digital IC outputChoose the right type of transistor, NPN or PNP. … Find out the supply voltage(s) and load properties. … Work out the transistor properties required. … Work out a value for the base resistor R. … Check if you need a protection diode.
What can replace a transistor
Micro electrical mechanical (MEMS) relays might actually become a serious competitor to transistors. If you can make them small enough, they can switch pretty fast, certainly fast enough to replace the transistors in many applicaticons like low power MCUs where speed is not a priority.
Which transistor is best
Best Transistors: BJTs#1 NPN – 2N3904. You can find most often NPN Transistors in low-side switch circuits. … #2 PNP – 2N3906. For high-side switch circuits, you need a PNP style BJT. … #3 Power – TIP120. … #4 N-Channel (Logic Level) – FQP30N06L.Apr 21, 2014
Which is better PNP or NPN
A NPN transistor has electrons as majority charge carriers whereas the PNP transistor has holes as majority charge carrier. The mobility of electrons is better than mobility of holes. … mobility of electrons is more than hole,so as a result npn transistor are faster than pnp that’s why they are preferred..
How do you find equivalent Mosfet
How to find the substitute for MOSFETFind out the full name of the transistor by its label. … Study the MOSFET transistor connection layout for determining its operating mode (key in switching circuits, impulse device, linear stabilizer, etc.).Find the datasheet with the description of the defective transistor.More items…