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(5)
C.V. adjustment: rotary switch for the adjustment of the output voltage.
(6)
C.V. fine-tuning: rotary switch for the fine-tuning of the output voltage.
(7)
C.C. indicator: the LED is lit when the device is in the C.C.-mode.
(8)
C.V. indicator: the LED is lit when the device is in the C.V.-mode.
(9)
Power switch: push-button used to activate/deactivate the device. The device is ON when either the C.C.
LED (7) or the C.V. LED (8) is lit.
(10)
Output terminal (+): used for the connection of the load's positive terminal.
(11)
Ground connection of the housing: the housing is grounded.
(12)
Output terminal (-): used for the connection of the load's negative terminal.
3.2. Operating Procedure
1) Using the device as a C.V. source
Turn adjustments (3) and (4) to the extreme right prior to activating the device. Activate the device. Use adjustment
(5) to obtain a voltage that is close to the desired value. Consequently, you should use fine-tuning adjustment (6) to
install the exact value. The C.V. indicator comes on.
2) Connecting the Load
The load is connected as shown in the figure above. You can read the output current (1) and the output voltage (2)
from the display as soon as the device has been switched on. The C.V. indicator (8) is lit if the device is in the C.V.-
mode. The C.V. LED is off and the C.C. LED will light if the Amp display indicates a value that exceeds the installed
value. When this happens, the device will automatically go into the current-limiting mode. Install a load that will allow
the device to function normally.
PS3010/PS3020
3
VELLEMAN
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