How to choose a power supply?
As we can see below, the main consideration is the specifications. Consider the power supply to be a black box, with the input parameters being on the left side, and output parameters being on the right side, and the other parameters of the power supply in the box. Let’s get into the each of these specification parameters one by one.
How to determine the required power supplies?
The required power supplies can be determined based on the criteria for definition of the installation (receivers, power, location, etc.) and the operating conditions (safety, evacuation of the public, continuity, etc.). They are as follows: This is intended to supply the installation continuously.
What factors should you consider before buying a power supply?
Well, you should always consider the following factors. Before buying a power supply, you should ensure that it has an in-built protection that will help in keeping its components safe especially from power related issues. The first is overcurrent and overload protection.
How to choose an AC-DC power supply?
For example, in an LED or test and measurement application, you may require an adjustable output voltage range. In that case, choosing an AC-DC power supply that has a variable output range feature, saves time and money. In other cases, you would need a fixed output voltage, such as 48V, 12V, and so on.
Why do you need a napkin drawing before choosing a power supply?
A napkin drawing is a good way to capture all the details you need in a power supply before choosing a power supply. As we can see below, the main consideration is the specifications.
Why does my power supply have a high output ripple?
Output regulation / ripple – Some applications would cause the power supply to have higher output ripple, and output current to fluctuate a lot. This is mainly due to the type of load such as motor drives. Some questions to ask yourself is if you require a regulated output, what level is tolerable for your application, and so on.
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