CN202679355U - Voltage stabilizing circuit for frequency modulation interphone - Google Patents
Voltage stabilizing circuit for frequency modulation interphone Download PDFInfo
- Publication number
- CN202679355U CN202679355U CN2012203163755U CN201220316375U CN202679355U CN 202679355 U CN202679355 U CN 202679355U CN 2012203163755 U CN2012203163755 U CN 2012203163755U CN 201220316375 U CN201220316375 U CN 201220316375U CN 202679355 U CN202679355 U CN 202679355U
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- voltage
- triode
- stabilizing circuit
- interphone
- voltage stabilizing
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Abstract
The utility model discloses a voltage stabilizing circuit for a frequency modulation interphone, comprising a first triode, a first resistor, a first capacitance, and a first stabilivolt, wherein a collector and an emitter of the first triode are respectively connected with a voltage input wire and a voltage output wire; two ends of the first resistor are respectively connected with the voltage input wire and the base of the first triode; one end of the first capacitance is connected with the line between the first resistor and the base of the first triode, and the other end of the first capacitance is grounded; the negative electrode of the first stabilivolt is connected with the line between the first resistor and the base of the base of the first triode; and the positive electrode of the first stabilivolt is grounded. The voltage stabilizing circuit for a frequency modulation interphone uses the above structure, and can realize the voltage stabilization function through the first resistor and the first triode. The voltage stabilizing circuit for a frequency modulation interphone has the advantages of being simple in the whole structure, using few elements, being lower in cost, and being conductive to popularizing and applying the interphone formed by the voltage stabilizing circuit for a frequency modulation interphone.
Description
Technical field
The utility model relates to communication equipment field, specifically is used for the voltage stabilizing circuit of frequency-modulation intercom for use.
Background technology
In modern communications, intercom be a kind of closely, simple wireless transmission means of communication because it does not need terminal and switch station, ground to support just can carry out effective mobile communication, so be loved by the people.Intercom can be divided into amplitude modulation and frequency modulation type on modulation system, wherein, frequency-modulation intercom for use is to make the receive frequency of one group of intercom identical with the tranmitting frequency of another group intercom with tranmitting frequency by regulating frequency and receive frequency, thereby realizes the wireless communication facility of intercommunication function.Frequency-modulation intercom for use is widely used in the industries such as public security, civil aviaton, transportation, water conservancy, railway, manufacturing, building, service, and especially in the place that network can't cover, frequency-modulation intercom for use becomes the means of communication that people like.
Be provided with many discrete elements in the frequency-modulation intercom for use, such as triode, discrete component is responsive to change in voltage in the intercom when mains fluctuations are large, and this will cause local circuit cisco unity malfunction in the intercom.In order to prevent that circuit from affecting intercom work when fluctuation occurs cell voltage, all be provided with pressurizer in the existing intercom, can well stablize the builtin voltage of intercom by pressurizer, but pressurizer ubiquity complex structure, use the defectives such as components and parts are many, this has just increased the cost of intercom, and then has influence on applying of intercom.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of simple in structure, uses components and parts few, saves cost, and the voltage stabilizing circuit that is used for frequency-modulation intercom for use of energy stabilized supply voltage.
The purpose of this utility model is achieved through the following technical solutions: the voltage stabilizing circuit that is used for frequency-modulation intercom for use, comprise the first triode, the first resistance, the first electric capacity and the first voltage-stabiliser tube, the collector and emitter of described the first triode is connected with respectively voltage input line and voltage output line, described the first resistance two ends are connected on voltage input line and the first transistor base, described the first electric capacity one end is connected on the circuit between the first resistance and the first transistor base, its other end ground connection, described the first voltage-stabiliser tube negative pole is connected on the circuit between the first resistance and the first transistor base, the first voltage-stabiliser tube plus earth.During the utility model work, the input of voltage input line receiver voltage, voltage output line is then with the Voltage-output after the voltage stabilizing.
Be connected with the second electric capacity on the described voltage output line, described the second electric capacity connects the other end ground connection of Voltage-output line end relatively.The second electric capacity of the present utility model forms overvoltage protection electric capacity, thereby voltage is stable when further guaranteeing the utility model work.
Described the first triode is the NPN triode.
Utilize the voltage clamping characteristic of voltage-stabiliser tube when working for the voltage stabilizing circuit of frequency-modulation intercom for use, when the reverse voltage of the first voltage-stabiliser tube reaches its breakdown voltage rating, avalanche type conducting effect will appear in the first voltage-stabiliser tube, thereby clamp the voltage on the load voltage value, the utility model amplifies by the first triode again adjusts voltage, and then finishes the voltage stabilizing requirement to power supply.
Compared with prior art, the utlity model has following beneficial effect: the utility model comprises the first triode, the first resistance, the first electric capacity and the first voltage-stabiliser tube, wherein, the first resistance two ends are connected on voltage input line and the first transistor base, the first electric capacity one end is connected on the circuit between the first resistance and the first transistor base, its other end ground connection, the first voltage-stabiliser tube negative pole is connected on the circuit between the first resistance and the first transistor base, the first voltage-stabiliser tube plus earth, the utility model can be realized voltage stabilizing by the first voltage-stabiliser tube and the first triode, the utility model uses element few, overall structure is simple, cost is low, and then is conducive to applying of intercom.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The corresponding name of Reference numeral is called in the accompanying drawing: R1-first resistance, C1-first electric capacity, C2-first electric capacity, VD1-first voltage-stabiliser tube, 1-voltage input line, 2-voltage output line.
Embodiment
The utility model is described in further detail below in conjunction with embodiment and accompanying drawing, but execution mode of the present utility model is not limited to this.
Embodiment:
As shown in Figure 1, the voltage stabilizing circuit that is used for frequency-modulation intercom for use, comprise the first triode Q1, the first resistance R 1, the first capacitor C 1, the second capacitor C 2 and the first voltage-stabiliser tube VD1, wherein, the first triode Q1 is the NPN triode, the collector electrode of the first triode Q1 is connected with voltage input line 1, and its emitter is connected with voltage output line 2.The first resistance R 1 two ends are connected on voltage input line 1 and the first triode Q1 base stage, and the first capacitor C 1 one ends are connected on the circuit between the first resistance R 1 and the first triode Q1 base stage, its other end ground connection.The first voltage-stabiliser tube VD1 negative pole is connected on the circuit between the first resistance R 1 and the first triode Q1 base stage, the first voltage-stabiliser tube VD1 plus earth.The second capacitor C 2 one ends are connected on the voltage output line 2, and the second capacitor C 2 connects the other end ground connection of voltage output line 2 ends relatively.
The voltage stabilizing circuit operation principle that is used for frequency-modulation intercom for use: voltage is from voltage input line 1 input, if the voltage that acts on the first voltage-stabiliser tube VD1 is higher than the first voltage-stabiliser tube VD1 breakdown voltage rating, input voltage is exported from voltage output line 2 after the first triode Q1 amplifies.
As mentioned above, then can well realize the utility model.
Claims (3)
1. the voltage stabilizing circuit that is used for frequency-modulation intercom for use, it is characterized in that: comprise the first triode (Q1), the first resistance (R1), the first electric capacity (C1) and the first voltage-stabiliser tube (VD1), the collector and emitter of described the first triode (Q1) is connected with respectively voltage input line (1) and voltage output line (2), described the first resistance (R1) two ends are connected on voltage input line (1) and the first triode (Q1) base stage, described the first electric capacity (C1) end is connected on the circuit between the first resistance (R1) and the first triode (Q1) base stage, its other end ground connection, described the first voltage-stabiliser tube (VD1) negative pole is connected on the circuit between the first resistance (R1) and the first triode (Q1) base stage, the first voltage-stabiliser tube (VD1) plus earth.
2. the voltage stabilizing circuit for frequency-modulation intercom for use according to claim 1 is characterized in that: be connected with the second electric capacity (C2) on the described voltage output line (2), described the second electric capacity (C2) connects the other end ground connection of voltage output line (2) end relatively.
3. the voltage stabilizing circuit for frequency-modulation intercom for use according to claim 1 and 2, it is characterized in that: described the first triode (Q1) is the NPN triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203163755U CN202679355U (en) | 2012-07-03 | 2012-07-03 | Voltage stabilizing circuit for frequency modulation interphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203163755U CN202679355U (en) | 2012-07-03 | 2012-07-03 | Voltage stabilizing circuit for frequency modulation interphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202679355U true CN202679355U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203163755U Expired - Fee Related CN202679355U (en) | 2012-07-03 | 2012-07-03 | Voltage stabilizing circuit for frequency modulation interphone |
Country Status (1)
| Country | Link |
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| CN (1) | CN202679355U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532584A (en) * | 2012-07-03 | 2014-01-22 | 成都市宏山科技有限公司 | Voltage-stabilizing circuit applied to frequency modulation interphone |
| CN108205350A (en) * | 2016-12-16 | 2018-06-26 | 航天科工惯性技术有限公司 | A kind of high temperature resistant servo circuit voltage regulator and accelerometer |
-
2012
- 2012-07-03 CN CN2012203163755U patent/CN202679355U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532584A (en) * | 2012-07-03 | 2014-01-22 | 成都市宏山科技有限公司 | Voltage-stabilizing circuit applied to frequency modulation interphone |
| CN108205350A (en) * | 2016-12-16 | 2018-06-26 | 航天科工惯性技术有限公司 | A kind of high temperature resistant servo circuit voltage regulator and accelerometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20130703 |