Circuit for enlarging voltage regulation range

Abstract

The invention provides a circuit for enlarging a voltage regulation range. The circuit is characterized in that the positive electrode of a first power supply is connected with one end of a first photoelectric coupler, the other end of the first photoelectric coupler is connected with the first end of a first resistor, the second end of the first resistor is connected with the first end of a third resistor, and the second end of the third resistor is connected with the negative electrode of the first power supply; the anode of the second power supply is connected with one end of the second photoelectric coupler, the other end of the second photoelectric coupler is connected with the second end of the third resistor, the first end of the third resistor is connected with the first end of the second resistor, and the second end of the second resistor is connected with the cathode of the second power supply; one end of the load resistor is connected with the first end of the first resistor, the other end of the load resistor is connected with the second end of the second resistor, the first end of the first resistor is the output end of output voltage, and the sampling end of the output voltage is located between the two ends of the load resistor. The circuit for increasing the voltage regulation range can increase the upper limit of the output voltage, and is high in regulation speed and low in ripple level.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a circuit for increasing the voltage regulation range. Background technique [0002] Charged particle detection is one of the most important parts of space exploration, including low-energy, medium-energy and high-energy charged particle detection. In order to measure the energy of charged particles, the Faraday retardation potential analyzer, as an important device for detecting low-energy charged particles in space, needs to provide a matching voltage output. The size of the blocking voltage determines the detection energy range of charged particles. A large detection energy range requires a high-span scanning voltage range (for example, 0 to 10kV), and a low ripple coefficient is required for accurate energy measurement. On the other hand, the time to complete a scan limits the sampling rate. To increase the sampling rate, a rapidly adjustable voltage output is ...

AI Technical Summary

Problems solved by technology

[0008] (3) The coupling capacitance between the light emitting tube and the light receiver is very small (<2pF), and the common mode rejection ratio is high;

But first of all, the technical difficulty is high, and the reliability of ultra-high withstand voltage optocouplers is not necessarily good; secondly, there is always an upper limit for the withstand voltage of optocouplers and optocouplers. If the energy range required by the index is further expanded, it may still not be able to meet the requirements.

Images