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When using electrical appliances, basic safety precautions should always 

be followed to reduce the risk of fire, electric shock and injury to persons or 

property.

Read all instructions before using the appliance and retain for future reference.

• 

Check that the voltage indicated on the rating plate corresponds with that of the 

local network before connecting the appliance to the mains power supply.

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Do not operate this appliance with a damaged plug or cord, after a malfunction or 

after being dropped or damaged in any way.

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Check the product before use for any damage. Should you notice any damage on 

the cable or casing, do not use.

• 

This appliance contained no user-serviceable parts. All repairs should only be 

carried out by a qualified engineer. Improper repairs may place the user at risk of 

harm. 

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This product must be grounded through the earth connection in the mains lead for 

safe operation and to reduce ripple and noise.

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This product is for indoor use only.

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Avoid touching the exposed metal of the output terminals.

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Do not block or obstruct any cooling vent opening.

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Avoid severe impacts or rough handling that leads to damage.

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Do not discharge static electricity. 

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This appliance can be used by children aged from 8 years and above and persons 

with reduced physical, sensory, or mental capabilities or lack of experience and 

knowledge if they have been given supervision or instruction concerning use of the 

appliance in a safe way and understand the hazards involved.

• 

Children should be supervised to ensure that they do not play with the appliance.

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Always disconnect from the mains when the product is not in use or before 

cleaning.

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Do not use the appliance for any purpose other than that for which it is designed.

• 

Do not operate or store in an environment of high humidity or where moisture may 

enter the product as this can reduce insulation and lead to electric shock.

IMPORTANT SAFETY INFORMATION

PRODUCT OVERVIEW
Main Features 

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Constant voltage or constant current

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Current limiting control

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High accuracy

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Auto switching between voltage and current operation

WHAT’S INCLUDED

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Power Supply Unit 

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Mains power lead 

• 

User Manual

Summary of Contents for 72-8340A

Page 1: ...1 Model 72 8340A 72 8345A and 72 8350A Switch Mode Bench PSU ...

Page 2: ...Avoid touching the exposed metal of the output terminals Do not block or obstruct any cooling vent opening Avoid severe impacts or rough handling that leads to damage Do not discharge static electricity This appliance can be used by children aged from 8 years and above and persons with reduced physical sensory or mental capabilities or lack of experience and knowledge if they have been given super...

Page 3: ...load requires more voltage and current Increase the voltage or current accordingly until CV appears Ground Connection Depending on the application the power supply output terminals can be grounded in any one of the following grounding conditions Negative ground black negative terminal is shorted with green GND terminal Positive ground red positive terminal is shorted with green GND terminal Floati...

Page 4: ...ge and Presetting Current Limiting Value CC Push the control one time to check the preset voltage and current level Push the control again until the decimal place which you want to adjust The selected decimal place will flash Turn the control to adjust your desired value To check the preset voltage and current level just turn the controls lightly in any direction or just push the controls one time...

Page 5: ...ng Operation Frequency 80KHz to 120KHz Power Factor 0 65 Efficiency at Maximum Power 84 83 81 Volt and Amp Control Type Rotary Encoder Voltmeter and Ammeter Display 4 Digit Voltmeter Accuracy 0 5 5counts for range V 5V 0 5 5counts for range V 10V 0 5 5counts for range V 20V 0 5 3counts for range V 5V 0 5 3counts for range V 10V 0 5 3counts for range V 20V Ammeter Accuracy 0 5 5counts for range I 2...

Page 6: ...ials used Contact your local authority for details of recycling schemes in your area Made in China PR2 9PP Man Rev 1 0 MAINTENANCE Cleaning Use a damp cloth and a small amount of liquid detergent if necessary Never submerse the power supply in liquid or allow any liquid to enter the case Do not use any chemicals abrasives or solvents that could damage the power supply casing Changing the fuse Repl...

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