How to choose the most suitable access control power supply?


Let's try to know how to choose a suitable access control power supply for your access control project

The power supply is an important part to stabilize the whole access controller even though access controller is the core of the system.
There are two matters of access power supply’s selection:
Linear powers or switching power supply is better?
How much power is fitted?

1, Is Linear powers or switching power supply better?

Linear powers
Advantage: stable performance without the interference of high-frequency ripple.
Disadvantage: heating, low use ratio of power without any superpower to select.
Switching power supply
Advantage: high power supply is easy to supply the power for it. And it shows a better cost-performance ratio. Small size, lightweight and many options for brands and models.
Disadvantage: low-quality power supply and uncontrollable high-frequency ripple will cause the access controller crashed and the door is unable to be opened which has a poor anti-interference.
ShineACS opinion and suggestion:
Both of them are OK. However, a linear power supply is more suggested. If switching power supply is chosen, the well-known brands one with powerful anti-interference ability controller is suggested (no options on the power supply).

2, What kind of power supply is fitted with an appropriate power?

12V DC is used on most access system, which means the power could be evaluated by a parameter of current. On consideration of its impact resistance and steady operation, suggestions are made as follows:
A, If a linear power supply is preferred, a controller with 4 NONC, a nominal 5-7A linear power supply is suggested.
B, If a linear power supply is preferred, a controller with 1 NONC, over nominal 3A linear power supply is suggested.
C, If switching power supply is preferred, a controller with 4 NONC, a nominal 4-5A linear power supply is suggested.
D, If switching power supply is preferred, a controller with 1 NONC, over nominal 3A linear power supply is suggested.
E, If there are 8 NONCs or 6 mag locks with a controller, over nominal 10A switching power supply is suggested.
Notes：the higher the power and rated current are, the better the power is, which will not cause any side-effects. On the contrary, it is not good to select a power supply with lower power and rated current.Some power manufacturers make false power and rated current information on their products, and that’s why well-known brands power is suggested.


For more information about access control system, please visit my "ShineACS Access Control Security" main website--It is a FREE website that you can download access control system knowledge and find right suitable access control products and solutions for your access control project.

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