CN-110661412-B - Surge circuit and antenna electric tuning controller

CN110661412BCN 110661412 BCN110661412 BCN 110661412BCN-110661412-B

Abstract

The invention provides a surge circuit and an antenna electric control controller, which are technically characterized in that the surge circuit comprises an electronic switch module, an energy storage module, a variable resistor module and a switch power supply module, wherein the input ends of the variable resistor module and the electronic switch module are connected with an external voltage input end, one end of the energy storage module is connected with the switch power supply module, the other end of the energy storage module is grounded, the output ends of the electronic switch module and the variable resistor module are respectively connected with the energy storage module, the energy storage module is used for enabling the switch power supply module to be electrified in a time delay mode, and the variable resistor module is used for outputting constant-current charging current. Through setting up variable resistance module, make and power on surge current not receive input voltage, output voltage and energy storage module's influence, the time of powering on is stable, realizes the effect of power on current stabilization.

Inventors

LAI JUNMAO
MA ZEFENG
PAN PEIFENG
HU BANG

Assignees

京信通信技术(广州)有限公司
京信通信技术(广州)有限公司
京信通信系统（广州）有限公司
京信通信系统（中国）有限公司
京信通信系统（广州）有限公司
天津京信通信系统有限公司

Dates

Publication Date: 20260421
Application Date: 20191017
Priority Date: 20191017

Claims (4)

1. The surge circuit is characterized by comprising an electronic switch module, an energy storage module, a variable resistor module and a switch power supply module, wherein the input ends of the variable resistor module and the electronic switch module are connected with an external voltage input end, one end of the energy storage module is connected with the switch power supply module, the other end of the energy storage module is grounded, the output ends of the electronic switch module and the variable resistor module are respectively connected with the energy storage module, the energy storage module is used for enabling the switch power supply module to be electrified in a delayed mode, and the variable resistor module is used for outputting constant-current charging current; the delay module comprises a second resistor and a first capacitor, wherein the second resistor is connected with the output end of the voltage stabilizing module, one end of the first capacitor is grounded, the other end of the first capacitor is connected with the second resistor, and the output end of the delay module is connected between the second resistor and the first capacitor; the energy storage module comprises a second capacitor; the switching power supply module comprises a voltage stabilizing chip and a third capacitor, one end of the third capacitor is grounded, the other end of the third capacitor is electrically connected with an enabling end of the voltage stabilizing chip, and a voltage input end of the voltage stabilizing chip is connected with an output end of the variable resistance module; The variable resistor module comprises a third resistor, a fourth resistor, a first triode and a second triode, wherein an emitter of the first triode is connected with an input end of the variable resistor module, two ends of the third resistor are respectively connected with an emitter and a base of the first triode, a collector of the first triode is connected with the fourth resistor, one end of the fourth resistor, far away from the first triode, is grounded, a base of the second triode is connected between the collector of the first triode and the fourth resistor, an emitter of the second triode is connected between the base of the first triode and the third resistor, and a collector of the second triode is connected with an output end of the variable resistor module.
2. The surge circuit of claim 1, wherein the voltage stabilizing module comprises a first resistor and a voltage stabilizing diode which are connected in series, the positive electrode of the voltage stabilizing diode is grounded, two ends of the first resistor are respectively connected with an external voltage input end and the negative electrode of the voltage stabilizing diode, and the output end of the voltage stabilizing module is connected between the voltage stabilizing diode and the first resistor.
3. The surge circuit of claim 1, wherein the electronic switch module comprises a MOS tube, a fifth resistor, a sixth resistor and a third triode, wherein the base electrode of the third triode is connected with the output end of the delay module, the collector electrode of the third triode is connected with the sixth resistor, the emitter electrode of the third triode is grounded, the fifth resistor is connected between the external voltage input end and the sixth resistor, the source electrode of the MOS tube is connected between the fifth resistor and the external voltage input end, the drain electrode of the MOS tube is connected between the variable resistor module and the energy storage module, the grid electrode of the MOS tube is connected between the fifth resistor and the sixth resistor, the MOS tube is a P-channel MOS tube, and the third triode is an NPN triode.
4. An antenna electric control controller, characterized by comprising the surge circuit according to any one of claims 1 to 3.

Description

Surge circuit and antenna electric tuning controller Technical Field The invention relates to the field of surge circuit design, in particular to a surge circuit and an antenna electric control controller. Background The existing standard antenna interface 3.0 protocol electric tuning controller has the problem of power-on surge current in the power-on process of a switching power supply, and the power-on current is unstable, so that the power-on time is unstable and longer. Disclosure of Invention The primary purpose of the invention is to provide a surge circuit with stable power-on current. Another object of the present invention is to provide an antenna electric control device employing the surge circuit. In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a surge circuit, includes electronic switch module, energy storage module, variable resistance module and switching power supply module, variable resistance module and electronic switch module's input is connected with external voltage input, energy storage module's one end with switching power supply module is connected and its other ground connection, electronic switch module and variable resistance module's output is connected with energy storage module respectively, energy storage module is used for making switching power supply module delay is gone up, variable resistance module is used for exporting constant current charging current. The surge circuit is further provided with a delay module, wherein the delay module is connected between the external voltage input end and the electronic switch module and is used for delaying the electronic switch module to be conducted. The surge circuit further comprises a voltage stabilizing module, wherein the voltage stabilizing module is connected between the external voltage input end and the time delay module and is used for providing reference voltage for the time delay module. The voltage stabilizing module comprises a first resistor and a voltage stabilizing diode which are connected in series, the positive electrode of the voltage stabilizing diode is grounded, two ends of the first resistor are respectively connected with an external voltage input end and the negative electrode of the voltage stabilizing diode, and the output end of the voltage stabilizing module is connected between the voltage stabilizing diode and the first resistor. The delay module is further arranged to comprise a second resistor and a first capacitor, wherein the second resistor is connected with the output end of the voltage stabilizing module, one end of the first capacitor is grounded, the other end of the first capacitor is connected with the second resistor, and the output end of the delay module is connected between the second resistor and the first capacitor. The variable resistor module comprises a third resistor, a fourth resistor, a first triode and a second triode, wherein an emitter of the first triode is connected with an input end of the variable resistor module, two ends of the third resistor are respectively connected with an emitter and a base of the first triode, a collector of the first triode is connected with the fourth resistor, one end of the fourth resistor far away from the first triode is grounded, a base of the second triode is connected between the collector of the first triode and the fourth resistor, an emitter of the second triode is connected between the base of the first triode and the third resistor, a collector of the second triode is connected with an output end of the variable resistor module, and the first triode and the second triode are PNP triodes. The electronic switch module comprises a MOS tube, a fifth resistor, a sixth resistor and a third triode, wherein the base electrode of the third triode is connected with the output end of the delay module, the collector electrode of the third triode is connected with the sixth resistor, the emitter electrode of the third triode is grounded, the fifth resistor is connected between the external voltage input end and the sixth resistor, the source electrode of the MOS tube is connected between the fifth resistor and the external voltage input end, the drain electrode of the MOS tube is connected between the variable resistor module and the energy storage module, the grid electrode of the MOS tube is connected between the fifth resistor and the sixth resistor, the MOS tube is a P-channel MOS tube, and the third triode is an NPN triode. The switching power supply module further comprises a voltage stabilizing chip and a third capacitor, wherein one end of the third capacitor is grounded, the other end of the third capacitor is electrically connected with the enabling end of the voltage stabilizing chip, and the voltage input end of the voltage stabilizing chip is connected with the output end of the variable resistance module. The invention also provides an antenna elec