Access control Power supply,Switch power supply,Accessories,220~110V AC to 12V DC,UPS

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EA-37A Access Control Switch Power Supply

Switch Power Supply
Dimension: 180×80×60(mm)
Output Voltage:DC12V
Output Current: 3A
Output Contact:12V/GND/PUSH/
NO/GND/NC/+PUSH/GND
Time Relay: 0-15s
Special Design:Pure black color, Double Face PC Board, pure Copper Transformer,Steel shell.
Protect Safely: Short Circuit Protection,
Anti-interference
Suitable For: Access control System,
Door Phone System
Remote Control Function: Optional

Specification
Product name	Access Control Switch Power Supply
Model number	EA-37A
Dimensions	180L * 80W * 60H (mm)
The output voltage	DC12V
Output current	3A
Output contact	12V / GND / PUSH / NO / GND / NC / + PUSH / GND
Delay setting	0-15s
Specially designed	Black color, double-pane glass, copper transformer, steel shell
security function	Short circuit protection, anti-jamming
Scope	Access control, building intercom systems, door button can be accessed
Optional	remote control

1.Selection of rectifier 6A10 (6A) rectifier, common market power, mostly use 5404 (3A) rectifier, rectifier strong load capacity, and little heat and stable performance.

2.Use BU406 transistor regulator, the common market compared to 7812 (or dual 7812) triode regulator to stabilize and BU406 theoretical maximum output current of 7A, 7812 only the theoretical maximum output current of 1.5A.

3.Fiberglass circuit board material using double-sided, common market power and most are single use cardboard panels, glass fiber board from going much stronger than cardboard texture, combined with a double panel, after such elements tin Weld, poor contact and so greatly reduced, and the internal circuit easily damaged.

4.Plus a large heat sink, cooling effect is better; if you use the power in the south, in hot weather, the heat is not good if it will speed up the aging rate power, shorten life.