Boltzmann Constant Apparatus Manufacturer,Supplier and Exporter in India
Product Code : SCL-EELE-12121
Indian Lab Suppliers supplies the Boltzmann Constant Apparatus (Product ID: 12121) as part of its electronics engineering lab equipment range. It is a board for determining the Boltzmann constant from the forward characteristic of a silicon PN junction diode at controlled temperatures.
Quick Answer
In forward bias a diode’s current rises exponentially with voltage, I = I0(eeV/ηkT − 1), so the slope of ln I against V at a known temperature gives e/ηkT and hence the Boltzmann constant k. A 0–2 V DC, 20 mA regulated supply with coarse and fine controls drives the silicon diode, a 3½-digit voltmeter (0–2 V) and ammeter (0–20 mA) read V and I, and a small oven with its own switch and a digital temperature meter set and show the diode temperature. The oven temperature range is not stated, so please confirm it at quotation; let the oven cool before handling.
Key Specifications
| Parameter | Detail |
|---|---|
| Supply | 0–2 V DC, 20 mA, regulated, coarse and fine control |
| Voltmeter | 3½-digit DC, 0–2 V |
| Ammeter | 3½-digit DC, 0–20 mA |
| Diode | Silicon PN junction |
| Temperature | Oven with ON-OFF switch; digital temperature meter |
| Mains | 230 V ±10%, 50 Hz |
| Size / weight | 340 x 125 x 210 mm; about 1.4 kg |
Where This Is Used
Used in B.Sc. physics and engineering physics labs as a modern-physics experiment; the Diode Characteristics Trainer (Product ID: 12097) and Diode, Zener Diode and LED Characteristics (Product ID: 12085) cover general diode characteristics. Browse the full Electronics Engineering Lab Equipment range or related Physics Lab Equipment products.
Frequently Asked Questions
How is k obtained?
From the slope of ln I against V for the diode at a known temperature.
Why is there an oven?
To repeat the measurement at different known temperatures.
Which diode is used?
A silicon PN junction diode.
Related Categories
Electronics Engineering Lab Equipment · Physics Lab Equipment · Electronics Lab Equipment
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