NPN Transistor Unit Manufacturer,Supplier and Exporter in India
Product Code : SCL-EAE-11265
The NPN Transistor Unit provides an accessible platform for practical experiments with a bipolar junction transistor, or BJT. An NPN transistor has three functional terminals: emitter, base and collector. A controlled base input influences the current flowing through the collector-emitter circuit.
The apparatus can support common-emitter characteristic experiments when connected to suitable regulated power supplies and measuring instruments. Students can vary base current, record collector current and collector- emitter voltage, and plot transistor characteristic curves. The installed transistor type, circuit configuration, panel material and operating limits must be confirmed for the supplied model.
Key Features
Demonstrates NPN transistor operation: Helps learners understand the relationship between base, collector and emitter currents.
Supports characteristic-curve experiments: Enables input and output readings to be recorded for graphical analysis.
Explains common-emitter operation: Suitable for studying a widely taught BJT circuit configuration.
Introduces transistor current gain: Supports the calculation of common-emitter current gain from measured current changes.
Accessible laboratory connections: Provides connection points for external power supplies, meters and circuit accessories.
Supports switching demonstrations: Helps explain transistor cutoff, active operation and saturation.
Suitable for repeated practical work: Designed for instructor-led demonstrations and supervised student exercises.
Technical Specifications
|
Specification |
Detail |
|
Product name |
NPN Transistor Unit |
|
Brand |
Lab Exports |
|
Product category |
Physics Laboratory Equipment / Electrical and Electronics |
|
Semiconductor type |
NPN bipolar junction transistor |
|
Transistor terminals |
Emitter, base and collector |
Applications and Uses
Identifying the emitter, base and collector terminals
Plotting common-emitter input characteristics
Plotting common-emitter output characteristics
Determining transistor current gain
Studying cutoff, active and saturation regions
Demonstrating transistor switching action
Introducing basic transistor amplification concepts
How to Use the NPN Transistor Unit
Place the unit on a dry, stable and non-conductive laboratory bench.
Identify the base, collector and emitter terminals from the panel markings.
Connect the apparatus according to the approved experiment circuit.
Set both external power supplies to zero before switching them on.
Increase the base input gradually and record the corresponding current readings.
Vary the collector-emitter voltage within the confirmed transistor rating.
Repeat the readings as required and plot the characteristic curves.
Switch off the supplies before changing or removing connections.
Safety note: Confirm transistor polarity before applying power. Use current-limiting resistance, avoid short circuits and never exceed the confirmed voltage, current or power-dissipation ratings.
Care and Maintenance
Disconnect all power sources after every experiment.
Keep the panel, terminals and connecting leads clean and dry.
Inspect leads and sockets for loose connections or damaged insulation.
Store the unit in a dust-free cabinet and protect it from static discharge.
Why Choose Lab Exports?
Lab Exports manufactures, supplies and exports scientific laboratory instruments, educational experiment setups and electronics training equipment for institutional use. The NPN Transistor Unit belongs in the company’s electrical and electronics laboratory equipment range.
Buyers can also review the wider physics laboratory equipment collection and the complete laboratory equipment range . Transistor type, electrical limits, accessories and export packing should be confirmed against the final quotation.
Frequently Asked Questions
What is an NPN Transistor Unit used for?
It is used to study NPN transistor biasing, terminal currents, characteristic curves, current gain and basic switching or amplification.
What do NPN and BJT mean?
NPN identifies the semiconductor layer arrangement. BJT means bipolar junction transistor, a three-terminal device with emitter, base and collector connections.
Can students plot transistor characteristics with this unit?
Yes, provided the unit supports the required circuit configuration and is connected to suitable power supplies and measuring instruments.
What is current gain in a common-emitter experiment?
Common-emitter current gain relates a change in collector current to the corresponding change in base current at a stated collector-emitter voltage.
Can the apparatus demonstrate transistor switching?
Yes. A suitable experiment can demonstrate the cutoff and saturation conditions used in basic transistor switching circuits.
Is the NPN Transistor Unit suitable for schools?
Yes. It is suitable for supervised senior-school, college and vocational electronics practicals when operated within the confirmed ratings.
Request the confirmed transistor model, ratings and accessory list through the Lab Exports contact page, or browse the related electrical and electronics laboratory range.
