Plancks Constant Apparatus

Using Photocell

Planck’s Constant Apparatus PCA-10, utilizes latest technology to provide accurate results within 90% accuracy, whereas other methods provide accuracy much lower than that. It is self contained kit and requires no other accessories. The Kit facilitates determination of Planck’s Constant (h) by measuring the photo cell current (nA), negative potential and wave length of light etc.

  • To study and determine the characteristics of Photocell.
  • To study voltage of the photo-cell as a function of the frequency of the irradiated light.
  • Planck's 'Quantum of action' from the photoelectric effect.

Apparatus Required
  • Photo Cell with stand
  • Colour Glass Filters 
  • Digital Nanometer with 16x2 Alphanumeric LCD to Display 'The first row shows : Neg. Potential and Null
  • Point' and 'The second row shows : Photocell Voltage and Photo Current'
  • Built-in Regulated power supply (0-5V).
  • 16x2 Alphanumeric LCD with backlight to show Voltage and Current readings.
  • Current Detecting Unit – Digital Nanoammeter, a high stability low current measuring instrument.
  • Light Source – Halogen Tungsten Lamp 12V/35W.
  • Colour Filters : 635nm, 570nm, 540nm, 500nm & 460nm.
  • PC Interface is provided to view the data on the PCSoftLab1.0 (optional).
  • Detailed experimental manual to perform various experiments.



Zigbee/Xbee Evaluation Board

Zixbee Eval. Board

Programmer Board

PIC 16F & 12C/12E

Gauss Meter

DGM - 5

Zeeman Effect Experiment

Zeeman Effect Experiment

Mind Pulse

Read Your Brain Activity

Voltage Stabilizer


Parallel Port Tester

with Stepper Motor Controller

Video Transmitter

(4 Channel)

Audio Oscillator

AO - 1000D

Voice Recognition Kit

Embedded Voice Recognition System


(Sweep + Marker + XY Scope)

Multi-Axis Stepper Motor Control

using RS-232 for CNC machine

Robotic Kit

Robot Crane

Op - Amp Trainer

Op - Amp Industrial Lab

Hall Effect Experiment

Hall Effect Experiment

USB Host Shield

Embedded Android System

Digital IC Tester

Digital IC Tester

TFT - LCD Touch

TFT - LCD Touch Controller

Oscillator Trainer

Oscillator Training Kit

Op - Amp Training Kit

Operational Amplifier

Boltzmann Constant Kit

using a PN junction diode.

Antenna Trainer

UAT - 100

Embedded VGA Controller

Turn your Microcontroller board into a graphics card

Op-Amp as Active Filters

Operational Amplifier

8051 Quad Motor Driver

Design and Simulation of Shift Register driven Quad Motor Dr....

LCR Bridge

LCR - 10B

AM / FM Signal Generator

DDS Signal Generator

Sesmic Sensor

Earth Quake Sensor

GM Counter

For detection and measurement of all types of radiation

Optical Pyrometer Trainer

High Temperature Measurement

LCR Circuit

Using AC

Polarization By Reflection

Using Diode Laser

Fundo Inventors Kit

Make anything Into a Key and play music using it


(Sweep + Marker)

X - Ray Diffraction

X - Ray Diffraction

GPS Logger

Ride for Fun

USB HID Gamepad

Play Your Game

POV Display

Persistence of Vision using AVR

Cathode Ray Tube

CRT Characteristics

Railway Announcer

Railway Announcer

8051 Eval. Kit

50 Projects on 8051

Moving Message Display

To display Text, Graphics, Animations, and Video

Industrial Timer / Clock

Write a Program to make a Multipurpose Industrial Timer

Half / Full Wave Rectifier

Filters & Voltage Multiplier

Kelvins Double Bridge

Wire Impedance Measurement

Quincks Method

Susceptibility of Solution



2051 I/O Board

Home Autmation

Smart Circuit Breaker

All-IN-One Circuit Breaker

Variation of Resistance

(Thermistor Bridge with Temperature)

Heat Capacity Kit

Specific Heat Capacity of Solid