Resistance Substitution Box

Code: ERS8050

A six-decade resistance substitution box designed for use in educational establishments.

Description

  • Simulates resistances from 1Ω to 999,999Ω in 1Ω steps
  • The required resistance is set by selecting the correct value from six rotary decade switches which clearly indicate the value selected by the student
  • An additional 1kΩ resistor is provided connected between one of the terminals of the internal resistance and a third terminal so the unit can be used as an accurate potential divider
  • All outputs are on 4mm terminals with 4mm sockets
  • Housed in a tough ABS box with non-slip rubber feet
  • Voltage rating 250V
  • Power rating 600mW
  • Dimensions 110 x 75 x 50mm
  • Designed and manufactured in the UK

Quick Comparison

SettingsResistance Substitution Box remove24V 21W Small Bayonet Cap Radial Filament Lamp removeCapacitance Substitution Box Class set of 15 removeDual Output PSU (12VAC/12VDC) removeIrwin 4 x D Cell Battery Holder Pack of 10 removeIrwin Portable Appliance Tester (PATCH) leads remove
NameResistance Substitution Box remove24V 21W Small Bayonet Cap Radial Filament Lamp removeCapacitance Substitution Box Class set of 15 removeDual Output PSU (12VAC/12VDC) removeIrwin 4 x D Cell Battery Holder Pack of 10 removeIrwin Portable Appliance Tester (PATCH) leads remove
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Description

Code: ERS8050

A six-decade resistance substitution box designed for use in educational establishments.
Pack of 10 24V 21W Small Bayonet Cap (SBC) Radial Filament Lamps.

Code: IPC-5865-X

Class set of 15 Capacitance Substitution Boxes. The IPC Capacitance Substitution Box (IPC-5861-X) provides the easily selection of 12 preferred value capacitors, ranging from 100pF to 0.47µF. The values range from: 100pF, 220pF, 470pF, 1nF, 2n2, 4n7, 10nF, 22nF, 47nF, 0.1µF, 0.22µF and 0.47µF. All the capacitors offer a maximum voltage rating of 50V (AC or DC), with actual capacitance value tolerances of ±5% to ±10%. The unit is housed in a robust ABS plastic case with rotary selector switch and a pair of 4mm connection sockets.

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.
Additional spare or replacement leads for our Portable Appliance Tester and Checker.
Content
  • Simulates resistances from 1Ω to 999,999Ω in 1Ω steps
  • The required resistance is set by selecting the correct value from six rotary decade switches which clearly indicate the value selected by the student
  • An additional 1kΩ resistor is provided connected between one of the terminals of the internal resistance and a third terminal so the unit can be used as an accurate potential divider
  • All outputs are on 4mm terminals with 4mm sockets
  • Housed in a tough ABS box with non-slip rubber feet
  • Voltage rating 250V
  • Power rating 600mW
  • Dimensions 110 x 75 x 50mm
  • Designed and manufactured in the UK

Code: OPR1221

Pack of 10 24V 21W Small Bayonet Cap (SBC) Radial Filament Lamps.
Description : Capacitance Substitution Box                    Part Number : IPC-5861-X                                               Electrical Supply : 50VAC/DC Maximum                         Dimensions : 75 x 100 x 40mm                                            Mass : 0.15kg                                          Capacitance Tolerance : ±5% to ±10%                                                                          Electrical Connections : 4mm Sockets
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

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.

Code: EPT5001LDS

Additional spare or replacement leads for our Portable Appliance Tester and Checker.
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