PS30
Low Voltage Switching DC Power Supply
1
Introduction
Congratulations on your purchase of the Triplett PS30 Power Supply. The Triplett PS30 is a low power switching
DC power supply with 6 fixed output voltages and over current protection.
The unit has compact structure, double insulation, safety and easy operation, wide voltage import, good
performance, novel appearance and more.
It is the ideal power supply unit for education, laboratory, factory, electronic appliance maintenance and more.
SAFETY PRECAUTIONS
These instruments fulfill the regulations of CE-LVD (EN-61010:2001) and CE-EMC (EN-55022:1998/+A1:2000;
EN 55024:1998; EN61000-3-2:2000; EN61000-3-3:1995).
To ensure safe operation of the equipment and eliminate the danger of serious injury due to short-circuit (arcing),
the following safety precautions must be observed.
Damages resulting from failure to observe these safety precautions are exempt from any legal claims whatever.
* Prior to connection of the equipment to the mains outlet, check that the available mains voltage corresponds to
the voltage setting of the equipment.
* Connect the mains plug of the equipment only to a mains outlet with right sockets.
* Do not place the equipment on damp or wet surfaces.
* Do not subject the equipment to direct sunlight or extreme temperatures.
* Do not subject the equipment to extreme humidity or dampness.
* Replace a defective fuse only with a fuse of the original rating. Never short circuit fuse or fuse housing.
* Do not exceed the maximum permissible input rating.
* Conduct measuring works only in dry clothing and in rubber shoes, i.e. on isolating mats.
* Comply with the warning labels and other info on the equipment.
* Do not insert metal objects into the equipment by way of the ventilation slots.
* Do not place water-filled containers on the equipment (danger of short-circuiting in case of knock over of the
container).
* Do not operate the equipment near strong magnetic fields (motors, transformers etc.).
* Do not subject the equipment to shocks or strong vibrations.
* Keep hot soldering iron or guns away from the equipment.
* Allow the equipment to stabilize at room temperature before taking up measurements (important for exact
measurement).
* Do not modify the equipment in any way.
* Do not place the equipment face-down on any table or work bench to prevent damaging the controls at the front.
*Opening the equipment and any service and repair work must be performed by qualified service personnel. Repair
work should be performed in the presence of a second person trained to ad minister first aid, if needed.
* Power supplies do not belong to children’s hands.
CLEANING THE CABINET
Prior to cleaning the cabinet, withdraw the mains plug from the power outlet. Clean only with a damp, soft cloth
and a commercially available mild household cleaner. Ensure that no water gets inside the equipment to prevent
possible shorts and damage to the equipment.
2
Specifications
Meter Description
(1) Power switch: the unit is "ON" when in I position
(2) Fixed DC output terminal (+): connecting the positive terminal of load
(3) Fixed DC output terminal (-): connecting the negative terminal of load
(4) Voltage display: display the output voltage
(5) Current display: display the output current
(6) Voltage adjustor: adjust the output voltage continuously
3
Operation
Load connection:
A Load is connected as shown above. After the unit is switched on, six different fixed voltages DC power can be
supplied to the load.
Rotate selection knob (5) to select the voltage.
To get more accurate measuring value, you should monitor by an external circuit with precision measuring meter.
CAUTIONS
• When operation is finished, put it in a dry place of good ventilation, and keep it clean. If it is not in use for
a long period, pull off the power supply plug for storage.
• For maintenance, input voltage must be cut off.
ACCESSORIES
• Instruction manual: 1 copy
• Fuse: 2 pcs
