Irwin Powerswitch

Code: EPU0113

A compact power supply offering 2, 4, 6, 8, 10, and 12 volts at currents of up to 5A. Both dc and ac outputs may be used simultaneously up to the rated output. The output is protected by a push button cut-out. The unit is 2A fused on the back panel and comes complete with a moulded mains lead and plug. 4 units are designed to fit in a shallow Gratnell tray.

Description

Specification 

  • Input Supply voltage 230V dc 
  • Supply frequency 50Hz 
  • Mains fuse Rear panel 2A, 20mm quick blow Mains plug 3A 
  • Output Voltage 2, 4, 6, 8, 10, 12V ac nominal 1, 3, 5, 7, 9, 11V full wave rectified dc nominal
  • Maximum output current 5A ac or dc
  • Manufactured in the UK

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NameIrwin Powerswitch removeIrwin De-Mountable Transformer removeBrass Small Bayonet Cap Batten Holders - Oval base removePlanck's Constant LED Apparatus removeCapacitance Substitution Box removeAC Magnetic Field Coil remove
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Description

Code: EPU0113

A compact power supply offering 2, 4, 6, 8, 10, and 12 volts at currents of up to 5A. Both dc and ac outputs may be used simultaneously up to the rated output. The output is protected by a push button cut-out. The unit is 2A fused on the back panel and comes complete with a moulded mains lead and plug. 4 units are designed to fit in a shallow Gratnell tray.

By connecting an ac power source to one of the coils and reading the voltage from the other coil transformer action (either step up or step down) may be readily demonstrated. The efficiency of the transformer may be studied –does the efficiency change if the laminate top is not firmly fixed? What happens if it is not present? Other more esoteric effects such as Magnetostriction may also be studied.
Class Packs of Brass SBC (Small Bayonet Cap) round lamp holders with an oval base.

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: 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
AC Magnetic Field Coil
Content
Specification 
  • Input Supply voltage 230V dc 
  • Supply frequency 50Hz 
  • Mains fuse Rear panel 2A, 20mm quick blow Mains plug 3A 
  • Output Voltage 2, 4, 6, 8, 10, 12V ac nominal 1, 3, 5, 7, 9, 11V full wave rectified dc nominal
  • Maximum output current 5A ac or dc
  • Manufactured in the UK

Code: L1017

A demountable transformer kit is an ideal way to demonstrate transformer action.  The kit comprises three coils, one with 300 turns, one with 600 turns and one with 1200 turns. These slide onto a laminated steel frame to form several possible transformer configurations.

Code: OPB3005

Class Packs of Brass SBC (Small Bayonet Cap) round lamp holders with an oval base.
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
Technical Details
Voltage rating 50V DC max.
Capacitance range 100pF to 9.9999µF in 100pF steps
Accuracy ±10% per decade
Residual capacitance 40pF
 

Code: IPC-4915-W

AC Magnetic Field Coil
WeightN/AN/AN/AN/AN/AN/A
DimensionsN/AN/AN/AN/AN/AN/A
Additional information