CN207036292U - A kind of communication apparatus preventing freeze in winter protector - Google Patents
A kind of communication apparatus preventing freeze in winter protector Download PDFInfo
- Publication number
- CN207036292U CN207036292U CN201721027948.1U CN201721027948U CN207036292U CN 207036292 U CN207036292 U CN 207036292U CN 201721027948 U CN201721027948 U CN 201721027948U CN 207036292 U CN207036292 U CN 207036292U
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- CN
- China
- Prior art keywords
- resistance
- communication apparatus
- triode
- winter
- transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of communication apparatus preventing freeze in winter protector; including rectifier bridge D, transformer W, buzzer H, triode V2 and resistance R1; one end connecting valve S1 of the resistance R1, communication apparatus W, triode V2 emitter stage and rectifier bridge T port 2; rectifier bridge T port 1 connects transformer W winding N2; transformer W winding N1 is connected with civil power, resistance R1 other end connecting triode V1 base stage.The chip type structure for having abandoned complexity is used only in the utility model communication apparatus preventing freeze in winter protector; formed using only basic electronic component; oscillator is formed using elements such as unijunction transistor and electric capacity; occurred with reference to buzzer; and circuit is additionally provided with self-checking function; the quality of alarm can be easily checked, therefore there is the advantages of cost is low, simple in construction and easy to use.
Description
Technical field
A kind of protector is the utility model is related to, specifically a kind of communication apparatus preventing freeze in winter protector.
Background technology
With the development of the social economy, the living standard of people improves constantly, communication apparatus has been must in people's life
Instrument in indispensable one, it is well known that the insensitive situation of reaction occurs in circuit board at low ambient temperatures, and reason is low
Temperature can cause the change in resistance of resistance, and then influence conducting electric current, the final work for influenceing electrical equipment, it is therefore desirable in the winter time
When certain low-temperature protection is carried out to the communication apparatus of open air.
Utility model content
The purpose of this utility model is to provide a kind of communication apparatus preventing freeze in winter protector, to solve above-mentioned background technology
The problem of middle proposition.
To achieve the above object, the utility model provides following technical scheme：
A kind of communication apparatus preventing freeze in winter protector, including rectifier bridge D, transformer W, buzzer H, triode V2 and resistance
R1, resistance R1 one end connecting valve S1, communication apparatus W, triode V2 emitter stage and rectifier bridge T port 2, rectification
Bridge T port 1 connects transformer W winding N2, and transformer W winding N1 is connected with civil power, resistance R1 other end connection
Triode V1 base stage, triode V1 colelctor electrode connecting triode V2 base stage, triode V2 colelctor electrode connection resistance R2,
Resistance R3, the other end and buzzer H for switching S1, buzzer H other end connection metal-oxide-semiconductor Q1 drain electrode, metal-oxide-semiconductor Q1 source electrode
Resistance R6 is connected, metal-oxide-semiconductor Q1 grid connects resistance R2, resistance R5, electric capacity C1 and double base diode Q2 emitter stage, electric capacity
C1 other end connecting triode V1 emitter stage, the resistance R6 circuits other end, resistance R4 and resistance the R5 other end, biradical pole
Diode Q2 the first base stage connection resistance R3 other end, double base diode Q2 the second base stage connection resistance R4's is another
End.
As preferred scheme of the present utility model：The resistance R1 is thermistor.
As preferred scheme of the present utility model：The switch S1 is key switch.
As preferred scheme of the present utility model：The winding N1 and N2 of the transformer W ratio of winding are 220:12.
Compared with prior art, the beneficial effects of the utility model are：The utility model communication apparatus preventing freeze in winter is protected
The chip type structure for having abandoned complexity is used only in device, is formed using only basic electronic component, utilizes unijunction transistor and electric capacity
Oscillator is formed Deng element, is occurred with reference to buzzer, and circuit is additionally provided with self-checking function, can easily check alarm
Quality, therefore with cost it is low, simple in construction and easy to use the advantages of.
Brief description of the drawings
Fig. 1 is the circuit diagram of communication apparatus preventing freeze in winter protector.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Referring to Fig. 1, a kind of communication apparatus preventing freeze in winter protector, including rectifier bridge D, transformer W, buzzer H, three poles
Pipe V2 and resistance R1, the resistance R1 one end connecting valve S1, communication apparatus W, triode V2 emitter stage and rectifier bridge T
Port 2, rectifier bridge T port 1 connect transformer W winding N2, and transformer W winding N1 is connected with civil power, resistance R1's
Other end connecting triode V1 base stage, triode V1 colelctor electrode connecting triode V2 base stage, triode V2 colelctor electrode
Resistance R2, resistance R3, the other end and buzzer H for switching S1 are connected, the buzzer H other end connects metal-oxide-semiconductor Q1 drain electrode,
Metal-oxide-semiconductor Q1 source electrode connection resistance R6, metal-oxide-semiconductor Q1 grid connection resistance R2, resistance R5, electric capacity C1 and double base diode Q2
Emitter stage, electric capacity C1 other end connecting triode V1 emitter stage, the resistance R6 circuits other end, resistance R4 and resistance R5
The other end, double base diode Q2 the first base stage connection resistance R3 other end, double base diode Q2 the second base stage connect
The connecting resistance R4 other end.
Resistance R1 is thermistor.Switch S1 is key switch.Transformer W winding N1 and N2 ratio of winding are 220:
12。
Operation principle of the present utility model is:Detecting element in circuit is thermistor R1, and its internal resistance is with temperature
Reduce and reduce, when environment temperature reaches the freezing point, the electric current for flowing through thermistor R1 is sufficient for triode V1 conducting, V1
Its collector current is added in V2 base stage after conducting so that and V2 is turned on, and now VCC voltages charge by resistance R2 to electric capacity C1,
When being charged to Q2 conducting voltage, Q2 conductings, electric capacity C1 is discharged by resistance R4, when electric capacity C1 both end voltages are less than Q2 base
During pole tension, V3 ends again, then electric capacity C1 is electrically charged again, and this process is repeated, so as to form audio oscillation, this oscillator signal
Q1 grid is added in after being taken out from electric capacity C1 both ends, after amplifying by V4, alarm is sent on buzzer H, reminds user's note
Anti-frost protection of anticipating operates, and is also provided with self-test switch in circuit, pushes button K, then electric capacity C1 also begins to charge, and above-mentioned sensing
Device triggering result it is identical, if alarm normally if can send alarm, if alarm damage, it is noiseless.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation
Involved claim.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (4)
1. a kind of communication apparatus preventing freeze in winter protector, including rectifier bridge D, transformer W, buzzer H, triode V2 and resistance
R1, it is characterised in that one end connecting valve S1, communication apparatus W, triode V2 emitter stage and the rectifier bridge T of the resistance R1
Port 2, rectifier bridge T port 1 connects transformer W winding N2, and transformer W winding N1 is connected with civil power, resistance R1
Other end connecting triode V1 base stage, triode V1 colelctor electrode connecting triode V2 base stage, triode V2 current collection
Pole connection resistance R2, resistance R3, the other end and buzzer H for switching S1, buzzer H other end connection metal-oxide-semiconductor Q1 drain electrode,
Metal-oxide-semiconductor Q1 source electrode connection resistance R6, metal-oxide-semiconductor Q1 grid connection resistance R2, resistance R5, electric capacity C1 and double base diode Q2
Emitter stage, electric capacity C1 other end connecting triode V1 emitter stage, the resistance R6 circuits other end, resistance R4 and resistance R5
The other end, double base diode Q2 the first base stage connection resistance R3 other end, double base diode Q2 the second base stage connect
The connecting resistance R4 other end.
2. a kind of communication apparatus preventing freeze in winter protector according to claim 1, it is characterised in that the resistance R1 is heat
Quick resistance.
A kind of 3. communication apparatus preventing freeze in winter protector according to claim 1, it is characterised in that the switch S1 be by
Key switch.
4. a kind of communication apparatus preventing freeze in winter protector according to claim 1, it is characterised in that the transformer W's
Winding N1 and N2 ratio of winding are 220:12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721027948.1U CN207036292U (en) | 2017-08-17 | 2017-08-17 | A kind of communication apparatus preventing freeze in winter protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721027948.1U CN207036292U (en) | 2017-08-17 | 2017-08-17 | A kind of communication apparatus preventing freeze in winter protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207036292U true CN207036292U (en) | 2018-02-23 |
Family
ID=61487696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721027948.1U Expired - Fee Related CN207036292U (en) | 2017-08-17 | 2017-08-17 | A kind of communication apparatus preventing freeze in winter protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207036292U (en) |
-
2017
- 2017-08-17 CN CN201721027948.1U patent/CN207036292U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 Termination date: 20200817 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |