阅读说明：本技术 一种线路稳压防反灌电路 (Circuit steady voltage prevents flowing backward circuit ) 是由 王成均 于 2020-12-31 设计创作，主要内容包括：本发明提供一种线路稳压防反灌电路,包括主控芯片U1、二极管D1、电容C1、电阻R1、电容C2、电容C3以及电容C4；所述主控芯片U1的OUT接点与所述电容C2、电容C3的输入端相连接,且所述电容C2和所述电容C3为并联连接；所述主控芯片U1的NC接点与所述电容C4的一端相连接,且所述电容C4的输出端接公共地；所述主控芯片U1的VSS接点接公共地；所述主控芯片U1的VIN接点与所述二极管D1的输出端以及电容C1的输入端相连接,实际应用过程中,可以较好的保证各器件的稳定安全运行,可靠度高。(The invention provides a circuit voltage-stabilizing anti-reverse-filling circuit which comprises a main control chip U1, a diode D1, a capacitor C1, a resistor R1, a capacitor C2, a capacitor C3 and a capacitor C4, wherein the main control chip U1 is connected with the diode D1; the OUT contact of the master control chip U1 is connected with the input ends of the capacitor C2 and the capacitor C3, and the capacitor C2 and the capacitor C3 are connected in parallel; the NC contact of the main control chip U1 is connected with one end of the capacitor C4, and the output end of the capacitor C4 is connected with the common ground; the VSS contact of the main control chip U1 is connected with a common ground; the VIN contact of the main control chip U1 is connected with the output end of the diode D1 and the input end of the capacitor C1, so that in the actual application process, the stable and safe operation of each device can be better ensured, and the reliability is high.)

1. A circuit steady voltage prevents flowing backward circuit which characterized in that: the LED driving circuit comprises a main control chip U1, a diode D1, a capacitor C1, a resistor R1, a capacitor C2, a capacitor C3 and a capacitor C4; the OUT contact of the master control chip U1 is connected with the input ends of the capacitor C2 and the capacitor C3, and the capacitor C2 and the capacitor C3 are connected in parallel; the NC contact of the main control chip U1 is connected with one end of the capacitor C4, and the output end of the capacitor C4 is connected with the common ground; the VSS contact of the main control chip U1 is connected with a common ground; the VIN joint of the main control chip U1 is connected with the output end of the diode D1 and the input end of the capacitor C1; the input end of the diode D1 is connected with VCC-5V, and the output end of the capacitor C1 is connected with common ground; two ends of the resistor R1 are respectively connected with the VIN contact and the CE contact of the main control chip U1.

2. A line voltage stabilization anti-backflow circuit according to claim 1, characterized in that: the CE joint of the main control chip U1 is also connected with a resistor R2; one end of the resistor R2 is also connected with the resistor R1, and the other end of the resistor R2 is connected to a common ground.

3. A line voltage stabilization anti-backflow circuit according to claim 1, characterized in that: the main control chip U1 is a ME6231C33M5G chip.

4. A line voltage stabilization anti-backflow circuit according to claim 1, characterized in that: the diode D1 is an IN5819 diode.

5. A line voltage stabilization anti-backflow circuit according to claim 2, characterized in that: the resistance value of the resistor R1 is 100K; the resistance value of the resistor R2 is 75K.

6. A line voltage stabilization anti-backflow circuit according to claim 1, characterized in that: the input end of the capacitor C2 is connected with VCC-3V 3.

[ technical field ]

The invention relates to the technical field of voltage stabilizing circuits, in particular to a circuit voltage stabilizing and reverse-irrigation preventing circuit with a prominent application effect.

[ background art ]

Line voltage stabilizing circuits are a common circuit type of electrical products.

The problem that present circuit steady voltage prevents flowing backward circuit exists is that there is not effectual part to avoid the influence of voltage to each functional unit, and the filter capacitor in the circuit can't satisfy actual demand etc. restricts the better operation of circuit.

Based on this, the technical personnel in the field carry out a large amount of research and development and experiments, and start from the specific connection mode part of the anti-reverse-filling circuit and carry out improvement and improvement, and obtain better results.

[ summary of the invention ]

In order to overcome the problems in the prior art, the invention provides a circuit voltage-stabilizing anti-reverse-irrigation circuit with a prominent application effect.

The invention provides a circuit voltage-stabilizing anti-reverse-flow circuit which comprises a main control chip U1, a diode D1, a capacitor C1, a resistor R1, a capacitor C2, a capacitor C3 and a capacitor C4, wherein the main control chip U1 is connected with the main control chip U1; the OUT contact of the master control chip U1 is connected with the input ends of the capacitor C2 and the capacitor C3, and the capacitor C2 and the capacitor C3 are connected in parallel; the NC contact of the main control chip U1 is connected with one end of the capacitor C4, and the output end of the capacitor C4 is connected with the common ground; the VSS contact of the main control chip U1 is connected with a common ground; the VIN joint of the main control chip U1 is connected with the output end of the diode D1 and the input end of the capacitor C1; the input end of the diode D1 is connected with VCC-5V, and the output end of the capacitor C1 is connected with common ground; two ends of the resistor R1 are respectively connected with the VIN contact and the CE contact of the main control chip U1.

Preferably, the CE contact of the main control chip U1 is further connected with a resistor R2; one end of the resistor R2 is also connected with the resistor R1, and the other end of the resistor R2 is connected to a common ground.

Preferably, the main control chip U1 is a chip with model number ME6231C33M 5G.

Preferably, the diode D1 is an IN5819 diode.

Preferably, the resistance value of the resistor R1 is 100K; the resistance value of the resistor R2 is 75K.

Preferably, the input end of the capacitor C2 is connected with VCC-3V 3.

Compared with the prior art, the line voltage-stabilizing anti-reverse-filling circuit is provided with a main control chip U1, a diode D1, a capacitor C1, a resistor R1, a capacitor C2, a capacitor C3 and a capacitor C4 at the same time; the OUT contact of the master control chip U1 is connected with the input ends of the capacitor C2 and the capacitor C3, and the capacitor C2 and the capacitor C3 are connected in parallel; the NC contact of the main control chip U1 is connected with one end of the capacitor C4, and the output end of the capacitor C4 is connected with the common ground; the VSS contact of the main control chip U1 is connected with a common ground; the VIN joint of the main control chip U1 is connected with the output end of the diode D1 and the input end of the capacitor C1; the input end of the diode D1 is connected with VCC-5V, and the output end of the capacitor C1 is connected with common ground; two ends of the resistor R1 are respectively connected with the VIN contact and the CE contact of the main control chip U1, so that in the actual application process, the stable and safe operation of each device can be better ensured, and the reliability is high.

[ description of the drawings ]

Fig. 1 is a circuit connection schematic diagram of a line voltage-stabilizing anti-reverse-filling circuit of the invention.

[ detailed description of the invention ]

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, a circuit 1 for preventing reverse-flow in line voltage stabilization according to the present invention includes a main control chip U1, a diode D1, a capacitor C1, a resistor R1, a capacitor C2, a capacitor C3, and a capacitor C4; the OUT contact of the master control chip U1 is connected with the input ends of the capacitor C2 and the capacitor C3, and the capacitor C2 and the capacitor C3 are connected in parallel; the NC contact of the main control chip U1 is connected with one end of the capacitor C4, and the output end of the capacitor C4 is connected with the common ground; the VSS contact of the main control chip U1 is connected with a common ground; the VIN joint of the main control chip U1 is connected with the output end of the diode D1 and the input end of the capacitor C1; the input end of the diode D1 is connected with VCC-5V, and the output end of the capacitor C1 is connected with common ground; two ends of the resistor R1 are respectively connected with the VIN contact and the CE contact of the main control chip U1.

The main control chip U1, the diode D1, the capacitor C1, the resistor R1, the capacitor C2, the capacitor C3 and the capacitor C4 are arranged at the same time; the OUT contact of the master control chip U1 is connected with the input ends of the capacitor C2 and the capacitor C3, and the capacitor C2 and the capacitor C3 are connected in parallel; the NC contact of the main control chip U1 is connected with one end of the capacitor C4, and the output end of the capacitor C4 is connected with the common ground; the VSS contact of the main control chip U1 is connected with a common ground; the VIN joint of the main control chip U1 is connected with the output end of the diode D1 and the input end of the capacitor C1; the input end of the diode D1 is connected with VCC-5V, and the output end of the capacitor C1 is connected with common ground; two ends of the resistor R1 are respectively connected with the VIN contact and the CE contact of the main control chip U1, so that in the actual application process, the stable and safe operation of each device can be better ensured, and the reliability is high.

Preferably, the CE contact of the main control chip U1 is further connected with a resistor R2; one end of the resistor R2 is also connected with the resistor R1, and the other end of the resistor R2 is connected to a common ground.

Preferably, the main control chip U1 is a chip with model number ME6231C33M 5G.

Preferably, the diode D1 is an IN5819 diode. Without adding diode D1, the back-coupled power affects other devices on VCC-5V.

Preferably, the resistance value of the resistor R1 is 100K; the resistance value of the resistor R2 is 75K.

Preferably, the input end of the capacitor C2 is connected with VCC-3V 3.

The linear regulators have the characteristic of being connected from the OUT to the IN, and the voltage corresponding to VCC-3V3 is connected to the PIN1 of the main control chip U1.

CEPIN increases two resistance voltage divisions, guarantees that the internal switch is opened when 5VI inputes, guarantees that internal control is closed when VCC-3V3 cascades back voltage.

Each capacitor is an output filter capacitor.

Compared with the prior art, the line voltage-stabilizing anti-reverse-filling circuit 1 is characterized in that a main control chip U1, a diode D1, a capacitor C1, a resistor R1, a capacitor C2, a capacitor C3 and a capacitor C4 are arranged at the same time; the OUT contact of the master control chip U1 is connected with the input ends of the capacitor C2 and the capacitor C3, and the capacitor C2 and the capacitor C3 are connected in parallel; the NC contact of the main control chip U1 is connected with one end of the capacitor C4, and the output end of the capacitor C4 is connected with the common ground; the VSS contact of the main control chip U1 is connected with a common ground; the VIN joint of the main control chip U1 is connected with the output end of the diode D1 and the input end of the capacitor C1; the input end of the diode D1 is connected with VCC-5V, and the output end of the capacitor C1 is connected with common ground; two ends of the resistor R1 are respectively connected with the VIN contact and the CE contact of the main control chip U1, so that in the actual application process, the stable and safe operation of each device can be better ensured, and the reliability is high.

The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.