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Digital Laboratory Power Supply : Design Aspects and Testing

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Digital control power supply ranging from 0V-24V with maximum current of 2A is designed and developed for use in the laboratory set-up. The developed system is for precise control of applied voltage to the equipment thereby increasing the reliability of the laboratory equipment’s. Unit.
Keywords:digital power supply, microcontroller, laboratory equipment.
Power supply is the most important aspect of electrical and electronics system as it provides the power to operate appliances or devices. This research focus on the development of a digital controlled bench power supply for laboratory utilization [1-3]. Basically there are few types of power supply and the most common are linear power supply and switching power supply. In addition to that, control and monitoring via real time software application is very rare in power supply development particularly for laboratory setup as it is oversees as a very useful tool to provide a very informative data for the user. Furthermore, by implementing the graphical user interface, it can provide control via specific communication protocol such as RS232. The control can be either voltage or, current value settings which is very important in laboratory equipment evaluations.
Digital Power Supply:
Typically regulated DC power supply is produce in such a way that the output comes directly from the regulators. But nowadays, digital control of regulated DC power supply is essential to provide a precise and stable supply for critical mission control systems. As mentioned in [13], in any battery powered and portable devices power dissipation efficiency is very important in order to have optimum output utilization. It also said that by reducing the frequency of the clock in synchronous digital clock it also reduces the power but the energy utilize remain the same. This is very crucial findings in the design of the digital power supply as it help to reduce the amount of the power usage but at the same time the amount of the energy is at its best. In any electrical and electronics devices the energy loss is really taken into picture because it Reflect how much efficient in any such system. Although to gain unity efficiency is almost impossible, engineers are still improvising in such a way any electrical and electronics appliances almost hit unity efficiency.


  1. W. Renso, W. Hei, B. Stefan, F. Long and G. Ronnie. “Digital Power Supply Controller for Control of Extremely Precise Power Supply”. IEEE, pp. 1-6, 2006.
  2. W. Hengyu, T. Minli and H. Ling. “The Design And Facture Of A Digital Control DC Regulated Power Supply Based On Single Chip”. IEEE, vol. 1, pp. 749-751, 2009.
  3. M. Maurice, J.P. de Gyvez and O. Ralph. “On-Chip Digital Power Supply Control For System-On-Chip Applications”. IEEE, pp. 311-314, 2005.