Hadex SPA-8100 User Manual
SPA-8100 / 8102 Fixed Voltage
Switching Mode Power Supply
USER’S MANUAL
INTRODUCTION
This fixed voltage switching mode power supply is designed with high RFI stability especially for DC operated radio
equipment. It is also suitable for a variety of applications that need a clean DC source.
The concealed trimmer allows fine tuning of output voltage range of 13.3 ~ 14.5V for SPA-8100 & 26.6 ~ 29V for SPA-
8102.
Constant current circuitry is used for overload , short circuit and over temperature protection. Output voltage and current
would drop to a safety value when any of the faults occur and the indicator will light up in red. This power supply also has Over
Voltage Protection to prevent your connected equipment from damage by abnormal high output voltage.
Please read through this manual and pay special attention to the caution and safety precautions.
Keep this manual in an easy to find place for future reference.
CAUTIONS
DO NOT use this power supply for high inductive load such as solenoid or motorized equipment because of the inductive kick
back from the output may damage the power supply.
DO NOT operate power supply immediately with a newly replaced fuse before the fault has been found and rectified. Make
sure to use the same rating and type as the original fuse.
SAFETY PRECAUTIONS
Never remove the casing when the power supply is connected to AC or load.
Never touch the unit when your hands are wet.
Never block any of the grille openings or allow foreign object to get inside .
Must use a mains AC 3 pin socket with effective grounding.
PANEL DESCRIPTION
1. On/Off Switch with Light
2. Indicator (Green : Operate / Red : Overload)
3. Cigar Socket with center positive ( 10A Max. )
4. Main DC Output Binding Post
5. AC Power Input Connector
6. Cover Fuse Holder
7. Fine tune access port at the base plate.
(Range : 13.3-14.5V for SPA-8100 & 26.6 ~ 29V for SPA-8102)