Dynamic load adjusting circuit based on capacitor electricity taking
The dynamic load adjustment circuit, powered by a capacitor, utilizes optocoupler feedback control and capacitor filtering devices to solve the output interruption problem caused by load current changes, thus achieving voltage stability and equipment stability when the load current changes.
Patent Information
- Application Number
- CN202423323322.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2034-12-31
AI Technical Summary
In existing capacitor-powered applications, dynamic changes in load current can cause main output interruptions, resulting in device restarts or abnormal error reports.
A dynamic load adjustment circuit based on capacitor power is adopted. It utilizes optocoupler feedback control and capacitor filtering devices to monitor the output voltage value and control the feedback signal to maintain the output voltage within the set range. MOS switches or capacitor charging chips are used for dynamic adjustment.
It achieves stable output voltage when the load current changes, avoiding device restarts or abnormal errors. It has a simple structure, low cost and high reliability.
Smart Images
Figure CN223912417U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The embodiment of the utility model relates to electronic circuit field, especially a kind of dynamic load adjustment circuit based on electric capacity electricity taking. BACKGROUND
[0002] Electric capacity electricity taking is a kind of technology using the charge-discharge characteristics of capacitor to obtain power, it is very useful in specific application scenarios.The basic principle of electric capacity electricity taking is to charge capacitor by charging circuit, and release stored energy to power supply when needed to power load.In existing electric capacity electricity taking applications, due to the large power required for capacitor charging, there is a main output large load current dynamic change, causing main output interruption, leading to backend device restart or abnormal error.
[0003] The above problems need to be solved. UTILITY MODEL CONTENT
[0004] Therefore, the utility model provides a kind of dynamic load adjustment circuit based on electric capacity electricity taking to solve the problems mentioned in the background technique part.
[0005] To achieve the above purpose, the utility model embodiment adopts the following technical scheme:
[0006] The utility model embodiment provides a kind of dynamic load adjustment circuit based on electric capacity electricity taking, and the circuit includes resistance R1, electric capacity C1, resistance 2, resistance R3, diode U1 and photo-coupler PC1;Wherein, the one end of resistance R1 is connected with load end Vo, the one end of resistance R4, the other end of resistance R4 is connected with the one end of electric capacity C1, the one end of resistance R5, the one end of diode D1, the other end of electric capacity C1 is connected with the other end of resistance R5, the anode of diode U1, the emitter of photo-coupler PC1 is connected after grounding GND, the cathode of diode U1 is connected with the one end of resistance R3 and the cathode of photo-coupler PC1, the other end of resistance R3 is connected with the anode of photo-coupler PC1 and the other end of resistance R1, the one end of resistance R2 is connected with the collector of photo-coupler PC1, and the other end of resistance R2 is connected with feedback control G end.
[0007] Preferably, diode U1 uses zener diode.
[0008] Preferably, resistance R1 is the power supply current-limiting resistance of photo-coupler PC1;Resistance R2 is the output pull-down resistance of photo-coupler PC1.
[0009] The technical scheme of the embodiment of the utility model provides that when the load current of the output load end Vo changes greatly, the front end input is in constant power, the output is interrupted, the feedback control G end control signal is fed back through the photocoupler PC1, the resistance R4 and the resistance R5 constitute the output sampling end, the setting value thereof is the lowest allowable voltage value for maintaining the output, the capacitor C1 is a filter device, the output voltage value is monitored, the feedback control G end is controlled, the feedback control G end can be connected with the capacitor charging chip or the MOS switch, so that it is in the switch state or the linear region of the MOS, the corresponding output voltage is maintained in the set range, and the dynamic load adjustment is completed. BRIEF DESCRIPTION OF DRAWINGS
[0010] In order to more clearly illustrate and understand the technical scheme in the embodiment of the utility model, the drawings needed to be used in the background art, embodiment description of the utility model will be simply introduced, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiment of the utility model and these drawings without creative labor.
[0011] Figure 1 The dynamic load adjustment circuit structure diagram based on the capacitor power taking of the embodiment of the utility model is provided. DETAILED DESCRIPTION
[0012] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model more clear, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0013] Embodiment one
[0014] As shown in the formula (1), the dynamic load adjustment circuit structure diagram based on the capacitor power taking of the embodiment of the utility model is provided. Figure 1 Figure 1 The dynamic load adjustment circuit structure diagram based on the capacitor power taking of the embodiment of the utility model is provided.
[0015] The embodiment provides a dynamic load adjusting circuit based on capacitive power taking, which comprises a resistor R1, a capacitor C1, a resistor R2, a resistor R3, a diode U1 and an optocoupler PC1; wherein one end of the resistor R1 is connected with a load end Vo and one end of a resistor R4, the other end of the resistor R4 is connected with one end of the capacitor C1, one end of a resistor R5 and one end of a diode D1, the other end of the capacitor C1 is connected with the other end of the resistor R5, a positive electrode of the diode U1 and an emitter of the optocoupler PC1 and is grounded GND, a negative electrode of the diode U1 is connected with one end of the resistor R3 and a negative electrode of the optocoupler PC1, the other end of the resistor R3 is connected with a positive electrode of the optocoupler PC1 and the other end of the resistor R1, one end of the resistor R2 is connected with a collector of the optocoupler PC1, and the other end of the resistor R2 is connected with a feedback control G end.
[0016] Specifically, in the embodiment, the diode U1 is a voltage stabilizing diode, the resistor R1 is a power supply current limiting resistor of the optocoupler PC1, and the resistor R2 is an output pull-down resistor of the optocoupler PC1.
[0017] In operation, when the load current of the output load end Vo changes greatly, the front end input is in constant power, the output is interrupted, the feedback control G end control signal is controlled through the optocoupler PC1, the resistor R4 and the resistor R5 form an output sampling end, the setting value of which is to maintain the minimum allowable voltage value of the output, the capacitor C1 is a filter device, the feedback control G end is controlled by monitoring the output voltage value, the feedback control G end can be connected with a capacitor charging chip or a MOS switch, so that the feedback control G end is in a switching state or a linear region of the MOS, the corresponding output voltage is maintained in the set range, and the dynamic load adjustment is completed.
[0018] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. A dynamic load adjustment circuit based on capacitive power harvesting, characterized by, The circuit comprises resistance R1, capacitor C1, resistance 2, resistance R3, diode U1 and photo-coupler PC1; wherein one end of the resistance R1 is connected with load end Vo and one end of resistance R4, the other end of the resistance R4 is connected with one end of the capacitor C1, one end of the resistance R5 and one end of the diode D1, the other end of the capacitor C1 is connected with the other end of the resistance R5, the positive electrode of the diode U1 and the emitter of the photo-coupler PC1 and then grounded GND, the negative electrode of the diode U1 is connected with one end of the resistance R3 and the negative electrode of the photo-coupler PC1, the other end of the resistance R3 is connected with the positive electrode of the photo-coupler PC1 and the other end of the resistance R1, one end of the resistance R2 is connected with the collector of the photo-coupler PC1, and the other end of the resistance R2 is connected with feedback control G end.
2. The dynamic load adjustment circuit based on capacitive power harvesting of claim 1, wherein, The diode U1 is a voltage stabilizing diode.
3. A dynamic load adjustment circuit for capacitive power harvesting according to any of claims 1 or 2, characterized in that, The resistance R1 is a power supply current limiting resistance of the photo-coupler PC1, and the resistance R2 is an output pull-down resistance of the photo-coupler PC1.