Current source circuit

Abstract

The invention discloses a current source circuit, which comprises a signal acquisition module, a signal amplification module and a current control module, wherein the current output end of the current control module is electrically connected with a load; the current control module is used for providing output current for a load; the signal acquisition module is connected in parallel with the load; the signal acquisition module is used for acquiring voltage signals at two ends of a load and current signals flowing through the load, and outputting detection voltage according to the voltage signals and the current signals; the voltage input end of the signal amplification module is electrically connected with the signal acquisition module, and the voltage output end of the signal amplification module is electrically connected with the voltage feedback end of the current control module; the signal amplification module is used for performing signal amplification on the detection voltage and then outputting feedback voltage; and the current control module is also used for adjusting the output current provided for the load according to the feedback voltage. Thus, the application requirements of wide voltage range and low power can be met, and the cost of the current source is reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of current sources, and in particular, to a current source circuit. Background technique [0002] In the application of active oxygen electrodes, due to the large differences in water quality across the country, in order to ensure the service life of the electrode, the driving method of constant current reverse pole is generally used; but the difference in TDS of water quality in various places will cause the voltage to change when the driving current remains unchanged. The range of height difference will be very large, and the power of our drive is limited. If you want to choose a power adapter with a larger voltage range, the power of the power adapter will be relatively high, resulting in a lot of cost waste. Contents of the invention [0003] The invention provides a current source circuit to realize a wide voltage range and low power power supply circuit. [0004] An embodiment ...

AI Technical Summary

Problems solved by technology

[0002] In the application of active oxygen electrodes, due to the large differences in water quality across the country, in order to ensure the service life of the electrodes, the driving method of constant current reverse pole is generally used; but the difference in TDS of water quality in various places will cause the voltage to change when the driving current remains unchanged. The range of height difference will be very large, and the power of our drive is limited. If you want to choose a power adapter with a larger voltage range, the power of the power adapter will be relatively high, resulting in a lot of cost waste

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