A single-wire constant current/constant voltage power conversion method

Abstract

The invention discloses a single-line constant-current / constant-voltage electric energy conversion method. A single-line constant-current-to-constant-voltage electric energy conversion circuit is adopted. The single-line constant-current-to-constant-voltage electric energy conversion circuit acquires electric energy from a single-line constant-current output path and converts it into a constant-voltage output. ; The single-line constant current to constant voltage power conversion circuit includes a current bypass, a CC / CV main circuit and a MOS tube drive circuit; the CC / CV main circuit and the current bypass are connected in series in the single-line constant current output path after being connected in parallel; The bypass includes an NMOS transistor Q1 and a resistor R1; the D pole of the NMOS transistor Q1 is the input end of the current bypass, the S pole of the NMOS transistor Q1 is connected to one end of the resistor R, and the other end of the resistor R is the output end of the current bypass; The CC / CV main circuit includes a diode D1, capacitors C1 and C2, a resistor R2 and a regulator tube D3. The single-line constant-current / constant-voltage electric energy conversion method is easy to implement and cleverly conceived, and is especially suitable for single-line power supply occasions.

Description

technical field [0001] The invention relates to a single-line constant current / constant voltage electric energy conversion method. Background technique [0002] In the field of traditional DC power supply, whether it is a constant voltage source or a constant current source, two wires are used for power supply, that is, a power line and a return line. In the long-distance optical fiber communication, especially in the application of submarine optical fiber communication, due to the characteristics of single-line constant current power supply and the advantages of cost, photoelectric composite cables are mostly used. There is a layer of shielded copper tube on the photoelectric composite cable. The power supply of the load on the cable is realized by using this layer of copper tube to provide a constant current. It has only one wire, and its return line is realized by using sea water or the earth. Because there is only one wire on the cable and a certain constant current val...

AI Technical Summary

Problems solved by technology

Because there is only one wire on the cable and a constant current value passes through it, it is extremely difficult to obtain the constant voltage source required by the load with the traditional method

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