Testing the power supply

Safety Notes & Precautions

Prior to operation the power supply should be placed within the insulating laser cut enclosure as described in the previous step in order to isolate the user from high voltages. This circuit can produce voltages in excess of 100V. This is more than enough to give you a potentially severe electric shock if not handled correctly. Therefore, the operator should take care to avoid contact of any body part with the live output of the power supply. If you are unfamiliar with how to work with high voltage, please refrain from performing these tests.

Test instructions

• Ensure that the power supply switch is in the off position.
• Insert the plug from the 15V wall wart into the DC jack of the power supply.
• Turn the dial clockwise so that the power supply is at its lowest 25 V setting.
• Turn on the power supply using the switch next to the DC jack.
• Examine the output of the supply on the LCD display. It should read around 27 V as shown in the below left image. Change the output voltage by turning the dial. The output voltage should vary from about 27 - 100 V throughout the range of the dial. As the power supply is only lightly loaded during these tests, the output voltage may take a small amount of time to settle when changing from a higher to lower voltage setting.

• When you are finished examining the output voltage. Turn the power supply switch off and unplug the 15V plug from the DC jack.