Bypass parallel-connection constant-current source circuit

A technology of constant current source and bypass resistor is applied in the field of bypass parallel constant current source circuit, which can solve the problems of unsatisfactory performance and easy instability of constant current source, and achieve the effect of solving unsatisfactory performance and stable output current.
CN107844155APending Publication Date: 2018-03-27深圳睿舍智能科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
深圳睿舍智能科技有限公司
Publication Date
2018-03-27

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Abstract

The present invention relates to the field of electronic circuits, especially to a bypass parallel constant current source circuit. The present invention includes a controllable load connected in parallel to the load and the controllable load includes an operational amplifier IC1 and a feedback unit , the current on the bypass circuit flows to the operational amplifier IC1 through the feedback unit, and the operational amplifier IC1 outputs a current corresponding to the main circuit according to the feedback current, so as to achieve the effect of constant output current, and has the characteristics of stable output current. It solves the problem of unsatisfactory performance and easy instability of the traditional series constant current source and improves the power efficiency.
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Description

technical field

[0001] The invention relates to the field of electronic circuits, in particular to a bypass parallel constant current source circuit. Background technique

[0002] The constant current source is a component widely used in the circuit. The constant current source is a current source that keeps the output current constant. The essence of the constant current source is to use the device to feedback the current and dynamically adjust the power supply status of the device, so that the current tends to be constant. . As long as the current can be obtained, feedback can be effectively formed to establish a constant current source.

[0003] Such as Figure 6 As shown, the common controlled constant current source circuit is composed of MOS tube, diode and multiple resistors. Among them, in order to ensure the stability of the drain current of the MOS tube, the drain of the MOS tube is connected to the cathode of the diode, and the diode’s The anode is connected to ...

Claims

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