1.Introduction:
This is a AC/DC-DC Step Down Voltage Converter Kit, which need to be build with various electronic components. It can input AC15V or DC18V power supply and optional output voltage DC 3V, 4.5V, 5V, 6V, 9V, 12V by switch button. Each output voltage value can also be fine tuned or calibrated. It is a small mini desktop power supply that is very suitable for laboratories.

2.Feature:
1>.AC15V or DC18V Power Supply Input
2>.Optional Fixed Output DC 3V/4.5V/5V/6V/9V/12V
3>.Calibratable Output Voltage Value
4>.Easy to operate

3.Parameter:
1>.Input voltage: AC15V or DC18V
2>.Output voltage: DC 3V/4.5V/5V/6V/9V/12V
3>.Output current: 1A(MAX)
2>.Output Indicator: Red
3>.Work Temperature:-20℃~85℃
4>.Work Humidity:0%~95%RH
5>.Size(Installed):93*67*41mm

4.Note:
1>.Be sure to calibrate each output voltage value first after connect input voltage.
2>.It can input AC15V or DC18V, but when in use, only one power input can be selected.
3>.AC input method does not differentiate between positive and negative power poles.
4>.The potentiometer can only fine tune and calibrate the output value after selecting the output voltage.The potentiometer cannot significantly adjust the output voltage value.

5.Installation Manual with Schematic  (PDF):