Catalogue
Catalogue 2022
Linear DC Power Supply
we’ve been reliably selecting, modifying various service-based technologies to create specific, innovative solutions for our industrial partners.
Linear power supplies operate by rectifying AC line power to create DC and then filtering and regulating it to produce a user-selectable voltage or current levels. They are very useful tools in testing circuits, as they allow you to adjust the voltage to a specific value depending on what project you are working on. A variable DC bench power supply also allows you to set a maximum current, so if there is a short circuit in your project the bench supply will shut down hopefully preventing any harm to some components in your project. Bench power supplies are versatile, accurate and stable and don’t cost too much.
An advantage of Linear Power Supplies is that electrical or ripple noise is lower and easier to contain. Linear power supplies are more suitable for powering sensitive circuitry and generate more heat, resulting in lower energy efficiency. Linear supplies are heavier because the 50 Hz or 60 Hz transformer and associated filters are physically larger.
Choosing a Power Supply
Once you have decided on the no. of channels required (we provide single or triple output), the following should also be taken into consideration:
- Energy efficiency – normally detailed in the specifications or supplier’s datasheet.
- Line Regulation – Expressed as a percentage, this shows change in the output voltage relative to changes in the input line voltage.
- Load Regulation – is the measure to ensure that the output voltage is constant despite load variations. A good load regulation ensures that output voltage doesn’t fluctuate when loads increase or are removed. This is important where test results cannot be repeated.
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