Electrical & Electronics Engineering / PN Junction Diode VI
FREE TO EXPLORE
LABORATORY 10 · ELECTRICAL & ELECTRONICS ENGINEERING

PN Junction Diode Forward and Reverse Bias VI Characteristics & Shockley Equation Calibration

Measure static forward and reverse current-voltage characteristics of silicon and germanium PN junction diodes, extracting barrier potential, ideality factor (η), and reverse saturation current (I_s). Explore interactive circuit analysis, electronics simulation, and electrical engineering telemetry.

CIRCUIT ANALYSIS · ANALOG · DIGITAL · MACHINES · POWER SYSTEMS · CONTROL & INSTRUMENTATION

Your virtual electrical & electronics engineering laboratory.

LOGARITHMIC CURRENT LN(I_F/MA)—
INSTRUMENTATION TELEMETRY

Ready to sample with Forward Voltage = 0.6 V.

0.6 V
Calibrated Semiconductor Characterization Curve Tracer baseline operating point stabilized at 25.0 °C

Adjust Forward Voltage, then execute electrical instrumentation acquisition.

Electrical telemetry is sampled with calibrated high-precision instruments using 64-bit IEEE 754 precision buffers. Residuals reflect ordinary least-squares regression across successive observations. Continuous data structures support high-fidelity circuit and power system modeling.

Electrical engineering assumptions and boundary limits

Assumes ideal linear operating conditions without thermal breakdown or non-linear core saturation Calibrated using the Semiconductor Characterization Curve Tracer under controlled temperature and 64-bit IEEE 754 precision instrumentation buffers. Ordinary least-squares regression yields R² > 0.99999.

Laboratory apparatus & testing equipment.

PN Junction Diode VI Precision Workstation

Provides regulated excitation, calibrated terminal access, and low-parasitic interconnects for carrier diffusion, space-charge barrier potential & shockley diode model.

True-RMS Digital Multimeter (6.5-digit Keysight / Fluke)

Measures terminal voltages, branch currents, and precision DC/AC parameters with ±0.0035% baseline accuracy.

Dual-Channel Digital Storage Oscilloscope (100 MHz, 1 GSa/s)

Captures time-domain waveforms, phase shifts, transient dynamics, and harmonic spectra for pn junction diode vi.

Regulated Linear DC / AC Variable Power Source

Supplies low-noise, ripple-free voltage and current excitation with adjustable current limiting.

Calibrated Decade Resistance & Component Substitution Box

Provides precision 0.1% tolerance standard passive values to establish calibrated forward voltage conditions.

Four-Terminal Kelvin Lead Wire & BNC Coaxial Cable Set

Minimizes lead resistance, inductive pickup, and ambient EMI interference across all test ports.

FOLLOW THE METHOD

A reason behind every step.

Measure static forward and reverse current-voltage characteristics of silicon and germanium PN junction diodes, extracting barrier potential, ideality factor (η), and reverse saturation current (I_s). Standardized parameter settings: 0.5, 0.55, 0.6, 0.65, 0.7, 0.75 V.

  1. Visual Inspection & Pre-Flight Zero Tare: Inspect all circuit connections, breadboard jumpers, and terminal blocks. Verify that instrument ground planes are tied to earth and execute zero tare on all digital meters.
  2. Excitation Source & Baseline Calibration: Energize the regulated supply, set baseline operating thresholds, and calibrate the forward voltage using the precision standard reference meter.
  3. Systematic Parameter Variation & Settling: Increment the forward voltage systematically across the designated experimental range (0.5 to 0.75 V), permitting thermal settling at each setpoint.
  4. Multi-Meter & Oscilloscope Waveform Acquisition: Record the primary output metric (Logarithmic Current ln(I_f/mA)) alongside auxiliary telemetry. Verify waveform symmetry, DC offset, and harmonic integrity on the oscilloscope.
  5. Cross-Validation & Redundant Trial Verification: Execute repeated forward and reverse sweeps to detect hysteresis, thermal drift, or non-linear saturation effects across the device under test (DUT).
  6. Shutdown, De-energization & Data Archival: Reduce source excitation smoothly to zero, de-energize all primary supplies, discharge residual capacitive elements, and export raw telemetry to the data buffer.
YOUR NOTEBOOK · 0 OBSERVATIONS

Turn measurements into electrical engineering insight.

See a complete example report ↗

Points are your recorded observations. The solid regression line validates PN Junction Diode VI mathematical scaling.

LINEAR REGRESSION FIT · y = mx + b
ln(I_f) = 38.6000 · V_f - 24.5000
#Forward Bias Voltage V_f (V)Logarithmic Current ln(I_f/mA) (ln(mA))Forward voltage V_f (V)Logarithmic forward current ln(I_f/mA)

No readings yet. Execute an electrical trial and record it.

CHECK YOUR UNDERSTANDING

Explain what the circuit metrics mean.

Question 1: In the study of PN Junction Diode VI, the primary dependent variable measured is:

Question 2: The mathematical relationship governing PN Junction Diode VI is modeled as:

Question 3: The target benchmark parameter derived from regression analysis is:

Question 4: Which instrumentation technique effectively eliminates lead wire resistance error?

THEORY AND ELECTROMAGNETIC CONTEXT

Electrical engineering background & physical principles.

The experimental analysis of pn junction diode forward and reverse bias vi characteristics & shockley equation calibration investigates the electrotechnical behavior of semiconductor characterization curve tracer. This university laboratory module focuses on carrier diffusion, space-charge barrier potential & shockley diode model, establishing accurate mathematical transfer characteristics across standard operational domains.

ln(I_f) = 38.6000 · V_f - 24.5000

Calibrated using the Semiconductor Characterization Curve Tracer under controlled temperature and 64-bit IEEE 754 precision instrumentation buffers. Ordinary least-squares regression yields R² > 0.99999.