Is the regulation range of the regulated power supply as small as possible?
Technical indicators of regulated power supply
Regulated power supply technical indicators can be divided into two categories: one is the characteristics of the indicators, such as output voltage, output current and voltage regulation range; the other is the quality of the indicators, reflecting the strengths and weaknesses of a regulated power supply, including stability, equivalent resistance (output resistance), ripple voltage and temperature coefficient and so on.
1, the characteristics of regulated power supply indicators
(1)Maximum output current
It depends on the maximum allowable operating current of the main regulator tube and the capacity of the transformer and the maximum rectification current of the diode, etc.
(2) output voltage and voltage regulation range
This can be determined according to the requirements of the object of use. For the need to set the power supply equipment, the regulated power supply adjustment range * good smaller, once the voltage value is adjusted no longer change. For the output voltage adjustable power supply, its output range is mostly adjusted from zero volts, usually require a wider range of voltage regulation, and continuously adjustable.
(3) Protection characteristics
In the DC regulated power supply, when the load current overload or short circuit, the adjustment tube will be damaged. Therefore, a fast response overcurrent protection circuit must be used. In addition, when the regulated current fails, the output will be over-voltage, which can be harmful to the load. Therefore, an overvoltage protection circuit is also required.
(4) Efficiency
Regulated power supply is a transducer, therefore, there is also the problem of energy conversion efficiency. Improving efficiency is mainly to reduce the power consumption of the adjustment tube.
