July 23, 2010 – One of the most common troubleshooting calls customer service representatives receive is about intermittent or failed power supply, lock or access control operation. These malfunctions can easily be avoided by specifying or installing a power supply properly designed and tested and UL Listed for use with access control products.
While there are different technologies available in the security industry, the following information provides insight to why some power supplies may or may not be compatible with access controls and electric locking devices.
SWITCHING POWER SUPPLY
Switching Power Supplies are typically designed for use with resistive or capacitive loads such as low voltage lamps, alarm panels, cameras and signaling devices. They are lighter in weight, efficient (less heat generated) and are cheaper to manufacture. The low price of switching power supplies often encourages its misapplication.