Resistance-capacitance delay control circuit

Abstract

The utility model provides a resistance-capacitance time delay control circuit, which comprises a charging voltage stabilizing circuit and a charging and discharging circuit, the charging voltage stabilizing circuit comprises a resistor R2, a diode D2 and a voltage stabilizing diode ZD2, the resistor R2 is connected with the diode D2, the resistor R2 is connected with an input end, the diode D2 is connected with an input end of the charging and discharging circuit, and the charging and discharging circuit is connected with the charging and discharging circuit. A voltage stabilizing diode ZD2 is connected between the resistor R2 and the diode D2, the charging and discharging circuit comprises a capacitor C1, a capacitor C2, a resistor R3 and a resistor R4, two ends of the capacitor C1 and the capacitor C2 are connected together and are connected with two ends of the resistor R4, one end of the resistor R3 is respectively connected with the capacitor C1, the capacitor C2 and the resistor R4, and the other end of the resistor R3 is an output end of the charging and discharging circuit. According to the resistance-capacitance delay control circuit provided by the utility model, a delay circuit is constructed by the resistors and the capacitors, the circuit is simple, the requirements of customers are met, the requirement of reducing the cost is also met, and the processing and the manufacturing are relatively simple.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a resistance-capacitance delay control circuit. Background Art

[0002] With the continuous development of the automobile market, the industrial chain is becoming increasingly globalized and production is further shifting to emerging markets. New energy vehicles are a new chapter in the automobile industry. In recent years, new energy vehicles have developed rapidly in my country, with strong policy support, strong market demand, and increasingly rich configurations, but the price of new cars is getting cheaper and cheaper, which requires accessories to gradually reduce costs without reducing functions, regulations, etc. This patent uses a voltage regulator tube and a resistor and capacitor to cooperate with each other to build a delay circuit, achieving cost reduction while meeting the stringent requirements of automobile lights.

[0003] So far, car lights require a delayed lighting function when the turn signal switches to the daytime running light or position light. Most of the solutions on the market are basically implemented by single-chip microcomputers. Secondly, there is a solution that uses operational amplifiers as the main control device. Both of them are not only complex in circuit, causing manufacturing difficulties, but also have a high risk of circuit failure and high cost. Utility Model Content

[0004] The purpose of the utility model is to overcome the problem that the existing automobile lights require a delayed lighting function when the turn signal lamp is switched to the daytime running lamp or the position lamp. Most of the solutions on the market are basically implemented by using a single-chip microcomputer. Secondly, there is a solution that uses an operational amplifier as a main control device. Both of them are not only complex in circuit, causing manufacturing difficulties, but also have a high risk of circuit failure and high cost. A resistor-capacitor delay circuit is provided.

[0005] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0006] The utility model provides a resistance-capacitance delay control circuit, comprising a charging voltage-stabilizing circuit and a charging and discharging circuit, wherein the charging voltage-stabilizing circuit comprises a resistor R2, a diode D2 and a voltage-stabilizing diode ZD2, wherein the resistor R2 is connected to the diode D2, wherein the resistor R2 is connected to an input end, wherein the diode D2 is connected to the input end of the charging and discharging circuit, wherein the voltage-stabilizing diode ZD2 is connected between the resistor R2 and the diode D2, wherein the charging and discharging circuit comprises a capacitor C1, a capacitor C2, a resistor R3 and a resistor R4, wherein both ends of the capacitor C1 and the capacitor C2 are connected together and connected to both ends of the resistor R4, wherein one end of the resistor R3 is respectively connected to the capacitor C1, the capacitor C2 and the resistor R4, and the other end is the output end of the charging and discharging circuit.

[0007] Preferably, a power supply circuit is also included, the power supply circuit includes a diode D1 and a capacitor C3, the positive end of the diode D1 is connected to the power supply, the negative end of the diode D1 is connected to one end of the capacitor C3 and to the output end, and the other end of the capacitor C3 is connected to GND.

[0008] Preferably, the device further comprises a clamping diode ZD1 , one end of which is connected to the power supply circuit, and the other end of which is connected to the charge and discharge circuit.

[0009] Preferably, it also includes a driving thyristor Q1, one end of the driving thyristor Q1 is connected to the charging and discharging circuit, and the other end is the output end of the entire circuit.

[0010] In summary, the utility model provides a resistance-capacitance delay control circuit, which utilizes a charging voltage stabilization circuit and a charging and discharging circuit. The capacitors C1 and C2 of the charging and discharging circuit store charges when the input is powered on. When the circuit disconnects the input, the charges stored in the capacitors C1 and C2 are discharged through R3, so that the output end continues to have power for a certain period of time, thereby delaying the power-off of the output end. The delay circuit is constructed by using resistors and capacitors, and the circuit is simple. While meeting customer requirements, it also meets the need to reduce costs, and the processing and manufacturing are relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Explanation of the numbers in the figure: 1-power supply circuit, 2-clamping diode ZD1, 3-charging voltage stabilizing circuit, 4-charging and discharging circuit, 5-driving thyristor. DETAILED DESCRIPTION

[0014] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0015] See also Figure 1 The utility model provides a resistance-capacitance delay control circuit including a power supply circuit, the power supply circuit is composed of a diode D1 and a capacitor C3, the positive end of D1 is connected to the power supply, and C3 filters out high-frequency noise in the circuit.

[0016] One end of the clamping diode ZD1 is connected to the power supply circuit, and the other end is connected to the charging and discharging circuit. The ZD1 voltage regulator diode can select the type of voltage regulator tube as needed to share part of the voltage in the circuit and provide a certain charging voltage to the subsequent charging circuit.

[0017] The charging voltage stabilizing circuit includes a resistor R2, a diode D2 and a voltage stabilizing diode ZD2, the resistor R2 and the diode D2 are connected, the resistor R2 is connected to the input end, the diode D2 is connected to the input end of the charging and discharging circuit, and the voltage stabilizing diode ZD2 is connected between the resistor R2 and the diode D2. The resistance value of R2 can be set to be adjustable, and the magnitude of the subsequent charging current can be adjusted. The voltage stabilizing diode ZD2 provides a stable voltage for the subsequent discharge circuit, and the diode D2 prevents partial current from flowing back during discharge.

[0018] The charge-discharge circuit includes capacitor C1, capacitor C2, resistor R3 and resistor R4, the two ends of the capacitor C1 and capacitor C2 are connected together and connected to the two ends of the resistor R4, one end of the resistor R3 is respectively connected to the capacitor C1, capacitor C2 and resistor R4, and the other end is the output end of the charge-discharge circuit. When the input is powered on, the capacitor C1 and capacitor C2 store charges, and when the input is disconnected, the charges stored in C1 and C2 are discharged through R3, so that the output end continues to have electricity for a certain period of time, thereby delaying the power-off of the output end.

[0019] A driving thyristor is provided at the output end of the charging circuit to drive the subsequent circuit. Different driving circuits may need to be selected, or a triode may be used to drive the subsequent circuit.

[0020] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A resistance-capacitance delay control circuit, comprising a charging voltage stabilizing circuit and a charging and discharging circuit, wherein the charging voltage stabilizing circuit comprises a resistor R2, a diode D2 and a voltage stabilizing diode ZD2, wherein the resistor R2 and the diode D2 are connected, wherein the resistor R2 is connected to an input end, wherein the diode D2 is connected to an input end of the charging and discharging circuit, wherein the voltage stabilizing diode ZD2 is connected between the resistor R2 and the diode D2, wherein the charging and discharging circuit comprises a capacitor C1, a capacitor C2, a resistor R3 and a resistor R4, wherein both ends of the capacitor C1 and the capacitor C2 are connected together and connected to both ends of the resistor R4, wherein one end of the resistor R3 is respectively connected to the capacitor C1, the capacitor C2 and the resistor R4, and the other end is the output end of the charging and discharging circuit.

2. The RC delay control circuit according to claim 1, characterized in that: It also includes a power supply circuit, which includes a diode D1 and a capacitor C3, the positive end of the diode D1 is connected to the power supply, the negative end of the diode D1 is connected to one end of the capacitor C3 and to the output end, and the other end of the capacitor C3 is connected to GND.

3. The RC delay control circuit according to claim 1, characterized in that: The device further includes a clamping diode ZD1 , one end of which is connected to the power supply circuit, and the other end of which is connected to the charge and discharge circuit.

4. The RC delay control circuit according to claim 1, characterized in that: It also includes a driving thyristor Q1, one end of which is connected to the charging and discharging circuit, and the other end is the output end of the entire circuit.

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