Transistor Characteristics Apparatus
Product Code : SCL-EAE-11329
Quick answer: The Transistor Characteristics Apparatus is built around an NPN transistor in common emitter configuration. Students vary base-emitter and collector-emitter conditions, record base and collector currents, and plot input and output characteristics to study the cutoff, active and saturation regions and estimate current gain. Lab Exports manufactures it in Delhi for schools, colleges and universities.
Specifications
| Parameter | Detail |
|---|---|
| Device studied | NPN bipolar junction transistor |
| Circuit configuration | Common emitter |
| Principal measurements | Base-emitter voltage, base current, collector-emitter voltage and collector current |
| Primary experiments | Input characteristics, output characteristics and current-gain study |
| Brand | Lab Exports |
How the common emitter transistor experiment is done
In the common emitter connection the emitter is shared by the input (base) circuit and the output (collector) circuit. A small base current IB controls a much larger collector current IC, which is why this configuration is the standard one for studying transistor amplification.
The input characteristic is a graph of IB against VBE at a fixed VCE and looks like the forward curve of a diode. The output characteristics are graphs of IC against VCE at several fixed values of IB; they show the saturation region at low VCE, the nearly flat active region, and cutoff when IB is zero. The DC current gain is beta = IC / IB.
- Identify the base, collector and emitter connections and set both supplies to minimum.
- For the input curve, fix VCE, raise VBE in small steps and record IB at each step.
- For the output curves, set a base current, vary VCE and record IC; repeat for several base currents.
- Tabulate the readings and plot the input and output characteristic graphs.
- Calculate the current gain from IC and IB in the active region.
Key features
- NPN bipolar junction transistor wired in common emitter connection
- Input-characteristic study: base current against base-emitter voltage at a set collector-emitter voltage
- Output-characteristic study: collector current against collector-emitter voltage at chosen base currents
- Helps learners distinguish cutoff, active and saturation behaviour
- Recorded base and collector currents give the common emitter current gain
Documentation and supply
Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the Transistor Characteristics Apparatus at its works in Laxmi Nagar, Delhi, and supplies it to schools, colleges and universities in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
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The full range is in the Electrical and Electronics section of the Physics Lab range.
Frequently asked questions
What graphs are plotted with the transistor characteristics apparatus?
The common emitter input characteristic (IB against VBE at constant VCE) and the output characteristics (IC against VCE at several constant base currents).
How is current gain calculated in the common emitter experiment?
The DC current gain beta is the collector current divided by the base current, IC / IB, taken from readings in the active region.
What is the price of the Transistor Characteristics Apparatus?
Prices are not published on the website. Add the Transistor Characteristics Apparatus to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code SCL-EAE-11329 and the quantity, to receive a quotation.
Does Lab Exports manufacture the Transistor Characteristics Apparatus?
Yes. Lab Exports manufactures the Transistor Characteristics Apparatus at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code SCL-EAE-11329.
Request a quote
Email [email protected] with the house code SCL-EAE-11329 and the quantity, or add the Transistor Characteristics Apparatus to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
