Numerical control direct current voltage source

Abstract

The invention relates to a numerical control direct current voltage source, which is a power supply. The voltage display (2) and a button (3) are respectively connected with the singlechip (1). The singlechip (1) is connected with the D / A converter (4) which is connected with the integrated operational amplifying circuit (5). The integrated operational amplifying circuit (5) is connected with an emitter follower (6) which is connected with a main power supply (7). An assistant power supply (8) is respectively connected with the D / A converter (4) and the singlechip (1).The singlechip is as the core, so the invention has high output precision and double overload protection and alarming function by means of digital adjustment and closed-loop realtime monitoring, and is particularly suitable for occasions with higher precision requirements.

Description

Technical field: [0001] The invention relates to a voltage source, in particular to a digitally controlled DC voltage source. Background technique: [0002] With the development of computer and communication technology, the modern information technology revolution has provided broad development prospects for power electronics technology, and at the same time put forward higher requirements for power supplies. [0003] DC stabilized power supply is one of the commonly used equipment in electronic technology, widely used in teaching, scientific research and other fields. The traditional multifunctional DC regulated power supply has simple functions, difficult control, low reliability, large interference, low precision, large volume and high complexity. There are many varieties of ordinary DC regulated power supplies, but there are the following two problems: 1. The output voltage is adjusted by coarse adjustment (band switch) and fine adjustment (potentiometer); 2. The voltag...

AI Technical Summary

Problems solved by technology

The traditional multifunctional DC stabilized power supply has simple functions, difficult control, low reliability, large interference, low precision, large volume and high complexity

There are many varieties of ordinary DC regulated power supplies, but there are the following two problems: 1. The output voltage is adjusted by coarse adjustment (band switch) and fine adjustment (potentiometer); 2. The voltage stabilization method is all in series. Circuit, current-limiting or cut-off protection for overload, complex circuit composition, and low precision of voltage regulation

At present, in terms of power electronic devices, almost all the knob switches are used to adjust the voltage, the adjustment accuracy is not high, and it often jumps, which is troublesome to use.

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