Powerlock Gratnells Tray Pack of 4

Code: EPU0115PK4

Our compact Powerlock power supply now comes supplied in a 4 pack with a Gratnells deep tray for ease of storage. 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. Supplied with 2 keys.

Description

  • A robust power supply for powering laboratory experiments.
  • Heavy duty toroid transformer
  • Small footprint – 4 units fit in a Gratnells deep tray
  • Powder coated steel case
  • Switched output of 2V, 4V, 6V, 8V, 10V and 12V ac/dc controlled by a key lock
  • Two keys supplied with each Powerlock. Common key profile – any key fits any Powerlock
  • Total output current of 5A
  • AC and DC outputs may be used simultaneously up to rated current
  • Colour coded 4mm sockets
  • Push button cut-out
  • Manufactured in the UK

Quick Comparison

SettingsPowerlock Gratnells Tray Pack of 4 removeIrwin Powerbase V8 removeBERT - Battery Electrical Resistance Tester removeIrwin Portable Appliance Tester (PATCH) leads removeLamp Brightness Experiment remove12V 21W Small Bayonet Cap Radial Filament Lamp remove
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Description

Code: EPU0115PK4

Our compact Powerlock power supply now comes supplied in a 4 pack with a Gratnells deep tray for ease of storage. 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. Supplied with 2 keys.
Code: IV8000 The Powerbase V8 comes with a high power rotary transformer and a high specification toroid transformer replaces the original chassis transformer. The unit supplies 0-20V smoothed dc and 0-16V AC at 8 amps. The output is continuously variable and protected by a panel mounted thermal cut out. An output limiter is fitted which allows the user to preset the maximum voltage available.

Code: EBR5010

BERT is a simple way of introducing electrical resistance and resistivity to a class. It consists of a circuit board that may be drawn on using the supplied pencil. Connecting the two sides of the board together by a pencil line gives a conducting track and the LED lights. The brightness of the LED gives an indication of the resistance of the path.  Drawing the line thicker decreases the resistance, as does shortening the path. Resistances in parallel may be studied and a “volume control” simply made.   BERT may also be used to test various materials to see whether they are conductors or insulators. Liquids and pastes may also be tested.  The conductivity of the class may be studied as well as how a switch works.  When you are finished the pencil lines may be removed with the supplied eraser.
Additional spare or replacement leads for our Portable Appliance Tester and Checker.

Code: ELB8000

Students often think that the brightness of a lamp is only dependent on the current flowing through it. The unit allows the teacher to safely switch a 12V lamp in series with a mains lamp and study the current flow through them.  

Code: OPR1221

Pack of 10 12V 21W Small Bayonet Cap (SBC) Radial Filament Lamps.
Content
  • A robust power supply for powering laboratory experiments.
  • Heavy duty toroid transformer
  • Small footprint - 4 units fit in a Gratnells deep tray
  • Powder coated steel case
  • Switched output of 2V, 4V, 6V, 8V, 10V and 12V ac/dc controlled by a key lock
  • Two keys supplied with each Powerlock. Common key profile – any key fits any Powerlock
  • Total output current of 5A
  • AC and DC outputs may be used simultaneously up to rated current
  • Colour coded 4mm sockets
  • Push button cut-out
  • Manufactured in the UK
  • A heavy-duty power supply for powering laboratory experiments.
  • Heavy duty variable transformer and high power toroid transformer
  • Continuously variable output of 0 to 16Vac and 0 to 20V dc capacitor smoothed
  • Output current  8A.  Output voltages are rated at 8A load so higher voltages are available at less output current.
  • Manufactured in the UK with 5 years warranty
  • AC and DC outputs may be used simultaneously up to rated current.  
  • Colour coded 4mm sockets.
  • Maximum voltage limiter operated by Allen key
  • Push button cut-out to protect against overload and short circuit conditions
  • Available in Irwin Blue or transparent case
  • Mains Input 230V, 50Hz
  • Fusing: 5A mains plug fuse
A stunningly effective way of teaching the basics of electrical resistance. The kit comprises of: 
  • 1 x BERT circuit board
  • 1 x PP3 battery
  • 1 x 3B pencil
  • 1 x crocodile clip connecting lead
  • 1 x eraser
  • 1 x full set of teaching notes.

Code: EPT5001LDS

Additional spare or replacement leads for our Portable Appliance Tester and Checker.
This includes kit includes the use of a safety mains lamp socket, which has a built in a switching system that only allows it to be switched on when a lamp is inserted.  We have also included two switches, which must be pressed simultaneously to route the mains current through the low voltage lamp. Furthermore, the switches are sited at opposite ends of the case, requiring two hands to operate them.  However, it must be appreciated that you are working with potentially lethal voltages and currents and therefore extra care should be taken.
  • Supplied with 1 x 240V 100W lamp and 1 x 12V 5W lamp and mains power lead.
Pack of 10 12V 21W Small Bayonet Cap (SBC) Radial Filament Lamps.
Weight
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Additional information