How to Choose the Correct Model of Mastech DC Power Supplies

The key consideration is to figure out what the maximum voltage and maximum current you need for your applications. Typically, there is no need to pick a model with a higher rating than your maximum voltage and current, except in high-power applications. In such cases, we recommend going up one notch in the current rating. For example, if your application requires a maximum of 30V and 15A, the model HY3020E should be sufficient. On the other hand, if your application requires an output of 28V and 20A, it might be a good idea to choose the model HY3030E instead.

Other factors to consider include the type of display (LCD or LED), single or multiple outputs, etc. The current industry trend is to move away from LCD displays to LED displays, as bright LED displays are now widely available at a comparable cost. Mastech also offers color LED displays with models like 3005F-3 and 3003F-3.

If you do a lot of circuit design and testing, triple-output DC power supplies are a plus. They provide two variable outputs plus a third output fixed at 5V. The two variable outputs can be operated independently, in series, or in parallel mode, providing a very wide range of voltage and current.