Planck’s Constant LED Apparatus

Code: EPC7000

A multipurpose unit that allows the user to easily calculate Planck’s constant, to measure the wavelength of coloured light, demonstrate colour light transmission through colour filters and show the diffraction patterns for various wavelengths of coloured light using a range of 4 LEDs (Red, Yellow, Green and Blue) covering the light range from deep blue at 470nm to near IR at 940nm.

Category: science equipments and consumables

Description

Description

Box mounted with 5 x 4mm sockets for attachment to an ammeter or voltmeter to display measurements. Monitoring the voltage of each LED a graph of energy input as a function of light frequency emitted can be measured with an approximate value of Plank’s constant calculated.

Supplied with 500 lines/mm diffraction grating
Designed and manufactured in the UK

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Settings Planck's Constant LED Apparatus remove Westminster Power Supply remove 12V 21W Small Bayonet Cap Radial Filament Lamp remove Capacitance Substitution Box remove Irwin 4 x D Cell Battery Holder Pack of 10 remove Dual Output PSU (12VAC/12VDC) remove

Name Planck's Constant LED Apparatus remove Westminster Power Supply remove 12V 21W Small Bayonet Cap Radial Filament Lamp remove Capacitance Substitution Box remove Irwin 4 x D Cell Battery Holder Pack of 10 remove Dual Output PSU (12VAC/12VDC) remove

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Description

Code: EPC7000

A multipurpose unit that allows the user to easily calculate Planck's constant, to measure the wavelength of coloured light, demonstrate colour light transmission through colour filters and show the diffraction patterns for various wavelengths of coloured light using a range of 4 LEDs (Red, Yellow, Green and Blue) covering the light range from deep blue at 470nm to near IR at 940nm.

Code: EPU0201

A very popular and compact Westminster power supply that is ideal for school use in Key stage 4 and 5 physics lessons with its tough steel case protected by a tough powder coated finish that will last years of use. The unit will deliver up to 16A AC or DC through its colour coded terminal posts. This power supply is very popular for use in electromagnet experiments.

Code: OPR1221

Pack of 10 12V 21W Small Bayonet Cap (SBC) Radial Filament Lamps.

Code: ECS8100

Our five-decade capacitance substitution box has been specifically designed for the schools market with its clear display and ease of use.

Unit will simulate capacitances from 100pF to 9.9999µF in 100pF steps
Max. voltage 50V DC
The required capacitance is set by a counter with the value displayed in µF, nF and pF
Output is via 4mm terminals with 4mm sockets
Housed in a sturdy ABS box

Code: IPC-1402-P

This instrument (IPC-1402-P) is designed as a general purpose laboratory power supply. It has two isolated outputs which operate independently of each other. The AC output is selected by means of a 4-position switch on the front panel. Selected voltages are 2, 4, 6 and 12V at 4A continuously, or up to 5A for periods of 1 hour. The output is supplied via a pair of 4mm sockets on the front panel colour coded white. The output is protected from overload or short circuit by a current sensing circuit breaker mounted on the front panel. The DC output is smoothed and regulated and is continuously variable from 0V to 12V at currents up to 3A. Voltage ripple typically less than 50mV. The output is supplied via a pair of 4mm sockets on the front panel colour coded red (positive) and black (negative). The output is protected from short circuit or overload by an electronic regulator. The outputs may be used simultaneously as long as the combined load does not exceed 3A. Power on is indicated on the front panel by a green LED. An illuminated on/off switch is mounted on the rear panel adjacent to a fused IEC mains inlet. Enclosed in a robust metal case with a durable powder coated finish. Supplied with detachable mains lead and instructions. A pair of graphs showing how the output voltage of this power supply varies as the current supplied is increased is included in the instruction leaflet for this instrument.

Content

Supplied with 500 lines/mm diffraction grating
Designed and manufactured in the UK

AC & DC Output: Voltages 1-2V
Current 16A
Voltage type - Fixed
Output type - Full wave rectified DC & AC
Mains input 230/240V AC, 50Hz
Supplied with mains plug and lead
Manufactured in the UK

Pack of 10 12V 21W Small Bayonet Cap (SBC) Radial Filament Lamps.

Technical Details

Voltage rating	50V DC max.
Capacitance range	100pF to 9.9999µF in 100pF steps
Accuracy	±10% per decade
Residual capacitance	40pF

Code: EBH0004

The Irwin Tapped Battery Holder holds 4 x D (R20) batteries with outputs at 1.5, 3, 4.5 and 6V. Batteries and leads not supplied. Each output has a 4mm socket. Manufactured in the UK from premium strong perspex.

Description: Dual Output PSU (12VAC/12VDC) Part Number: IPC-1402-P Electrical Supply: 220-240VAC, 50-60Hz Dimensions: 179 x 190 x 85mm overall Mass: 2.9kg AC Output Voltage Range: 2, 4, 6 and 12VAC Maximum AC Output Current: 4A (5A upto 1 hour) DC Output Voltage Range: 0 to 12VDC Maximum DC Output Current: 3A

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