► First select the appropriate AC input voltage (115VAC, 230VAC or 400VAC) for your linear regulated 5VDC power supply.
► Then buy linear regulated 5VDC power supplies with the output current that you need, with top-hat rail or for wall mounting, or power supplies with an extremely high degree of protection.
A transistor control circuit is implemented in the linear regulated 5V power supply units. These 5V power supply units have a high control accuracy and fast settling time. However, the high voltage stability and the extremely low residual ripple are bought by an unfavourable efficiency compared to other concepts. These linearly regulated 5V power supply units are excellently suited for supplying higher-quality electronic circuits where, among other things, low residual ripple is important.