CN202931295U - Cordless telephone crystal oscillator type frequency modulation transmitter - Google Patents
Cordless telephone crystal oscillator type frequency modulation transmitter Download PDFInfo
- Publication number
- CN202931295U CN202931295U CN 201220523025 CN201220523025U CN202931295U CN 202931295 U CN202931295 U CN 202931295U CN 201220523025 CN201220523025 CN 201220523025 CN 201220523025 U CN201220523025 U CN 201220523025U CN 202931295 U CN202931295 U CN 202931295U
- Authority
- CN
- China
- Prior art keywords
- capacitor
- resistor
- inductance
- transistor
- crystal oscillator
- 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
Links
Landscapes
- Transmitters (AREA)
Abstract
The utility model discloses a cordless telephone crystal oscillator type frequency modulation transmitter, which comprises a dc source, an antenna, a piezoelectric ceramic sheet, a first inductance, a second inductance, a third inductance, a diode, a first transistor, a second transistor, a third transistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor and a tenth capacitor. The transmitter is arranged on the cordless telephone by using a crystal oscillator type frequency modulation function, the cordless telephone crystal oscillator type frequency modulation transmitter sends information through the cellphone screen display transmitter, and has simple circuit structure and stable performance.
Description
Technical field
The utility model relates to a kind of reflector, relates in particular to a kind of cordless telephone crystal oscillator formula frequency modulated transmitter.
Background technology
At present, building residence intercommunication is put into device, and most independent circuits of every family that adopt are controlled, and simple coil electromagnetism lock is directly controlled with power supply and switch and unblanked.So far also there is no a kind of product of wireless remote control mode, the visual messenger call that can allow the user see visitor's looks clearly on screen has brought inconvenience to people's life, can not meet people's Modern Live level.
Summary of the invention
The purpose of this utility model provides a kind of cordless telephone crystal oscillator formula frequency modulated transmitter with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
the utility model comprises DC power supply, antenna, piezoelectric ceramic piece, the first inductance, the second inductance, the 3rd inductance, diode, the first transistor, transistor seconds, the 3rd transistor, the first resistor, the second resistor, the 3rd resistor, the 4th resistor, the 5th resistor, the 6th resistor, the 7th resistor, the 8th resistor, the first capacitor, the second capacitor, the 3rd capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor, the 7th capacitor, the 8th capacitor, the 9th capacitor and the tenth capacitor, the cathode output end of described DC power supply respectively with the first end of described the 3rd inductance, the first end of described the 9th capacitor, the first end of described the second inductance, the first end of described the 7th capacitor, the collector electrode of described the first transistor, the first end of described the 5th resistor, the first end of described the first resistor be connected the first end of the first capacitor and connect, the second end of described the first capacitor is connected with the negative pole of described DC power supply, the second end of described the 3rd inductor respectively with the first end of described the tenth capacitor, the described the 3rd transistorized collector electrode, the first end of described the 8th resistor be connected the first end of the 9th capacitor and connect, the second end of described the tenth capacitor is connected with described antenna, the described the 3rd transistorized base stage respectively with the second end of described the 8th resistor be connected the first end of the 8th capacitor and be connected, the second end of described the 8th capacitor respectively with the collector electrode of described transistor seconds, the second end of described the second inductor, the first end of described the 7th resistor be connected the second end of the 7th capacitor and connect, the second end of described the 7th resistor respectively with the base stage of described transistor seconds be connected the second end of the 6th capacitor and be connected, the second end of described the 6th capacitor respectively with the first end of described the 4th capacitor be connected the first end of the 5th capacitor and be connected, the emitter of described the first transistor is connected with the second end of described the 6th resistor, the second end of described the 4th capacitor is connected with the second end of described the 5th resistor, the base stage of described the first transistor is connected with the first end of described the 3rd capacitor, the second end of described the 3rd capacitor respectively with the first end of described the first inductance be connected the first end of the 4th resistor and be connected, the second end of described the 4th resistor respectively with the second end of described the first inductance be connected the first end of piezoelectric ceramic piece and be connected, the second end of described piezoelectric ceramic piece respectively with the first end of described the 3rd resistor be connected the negative pole of diode and be connected, the second end of described the 3rd resistor respectively with described audio input end be connected the first end of the second capacitor and be connected, the second end of described the first resistor is connected with the first end of described the second resistor, the second end of described the second capacitor respectively with the second end of described the second resistor, the positive pole of described diode, the second end of described the 5th capacitor, the second end of described the 6th resistor, the emitter of described transistor seconds, the described the 3rd transistorized emitter be connected the cathode output end of DC power supply and connect.
The beneficial effects of the utility model are:
The utility model is by adopting crystal oscillator formula frequency modulation function to cordless telephone, transmitter to be set; The utility model shows transmitter institute transmission information by mobile phone screen, has advantages of the simple and stable performance of circuit structure.
Description of drawings
Fig. 1 is the circuit diagram of a kind of cordless telephone crystal oscillator formula frequency modulated transmitter described in the utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
as shown in Figure 1: the utility model comprises DC power supply, antenna, piezoelectric ceramic piece J, the first inductance L 1, the second inductance L 2, the 3rd inductance L 3, diode VD, the first transistor V1, transistor seconds V2, the 3rd transistor V3, the first resistor R1, the second resistor R2, the 3rd resistor R3, the 4th resistor R4, the 5th resistor R5, the 6th resistor R6, the 7th resistor R7, the 8th resistor R8, the first capacitor C1, the second capacitor C2, the 3rd capacitor C3, the 4th capacitor C4, the 5th capacitor C5, the 6th capacitor C6, the 7th capacitor C7, the 8th capacitor C8, the 9th capacitor C9 and the tenth capacitor C10, the cathode output end of DC power supply respectively with the first end of the 3rd inductance L 3, the first end of the 9th capacitor C9, the first end of the second inductance L 2, the first end of the 7th capacitor C7, the collector electrode of the first transistor V1, the first end of the 5th resistor R5, the first end of the first resistor R1 be connected the first end of capacitor C1 and connect, the second end of the first capacitor C1 is connected with the negative pole of DC power supply, the second end of the 3rd inductor C3 respectively with the first end of the tenth capacitor C10, the collector electrode of the 3rd transistor V3, the first end of the first end of the 8th resistor R8 and the 9th capacitor C9 connects, the second end of the tenth capacitor C10 is connected with antenna, the base stage of the 3rd transistor V3 is connected with the second end of the 8th resistor R8 and the first end of the 8th capacitor C8 respectively, the second end of the 8th capacitor C8 respectively with the collector electrode of transistor seconds V2, the second end of the second inductor L2, the second end of the first end of the 7th resistor R7 and the 7th capacitor C7 connects, the second end of the 7th resistor R7 is connected with the base stage of transistor seconds V2 and the second end of the 6th capacitor C6 respectively, the second end of the 6th capacitor C6 is connected with the first end of the 4th capacitor C4 and the first end of the 5th capacitor C5 respectively, the emitter of the first transistor V1 is connected with the second end of the 6th resistor R6, the second end of the 4th capacitor C4 is connected with the second end of the 5th resistor R5, the base stage of the first transistor V1 is connected with the first end of the 3rd capacitor C3, the second end of the 3rd capacitor C3 is connected with the first end of the first inductance L 1 and the first end of the 4th resistor R4 respectively, the second end of the 4th resistor R4 is connected first end with the second end of the first inductance L 1 respectively and is connected with piezoelectric ceramic piece J, the second end of piezoelectric ceramic piece J is connected negative pole with the first end of the 3rd resistor R3 respectively and is connected with diode VD, the second end of the 3rd resistor R3 respectively with audio input end be connected the first end of capacitor C2 and be connected, the second end of the first resistor R1 is connected with the first end of the second resistor R2, the second end of the second capacitor C2 respectively with the second end of the second resistor R2, the anodal VD of diode, the second end of the 5th capacitor C5, the second end of the 6th resistor R6, the emitter of transistor seconds V2, the emitter of the 3rd transistor V3 is connected cathode output end and is connected with DC power supply.
Claims (1)
1. a cordless telephone crystal oscillator formula frequency modulated transmitter, is characterized in that: comprise DC power supply, antenna, piezoelectric ceramic piece, diode, the first inductance, the second inductance, the 3rd inductance, the first transistor, transistor seconds, the 3rd transistor, the first resistor, the second resistor, the 3rd resistor, the 4th resistor, the 5th resistor, the 6th resistor, the 7th resistor, the 8th resistor, the first capacitor, the second capacitor, the 3rd capacitor, the 4th capacitor, the 5th capacitor, the 6th capacitor, the 7th capacitor, the 8th capacitor, the 9th capacitor and the tenth capacitor, the cathode output end of described DC power supply respectively with the first end of described the 3rd inductance, the first end of described the 9th capacitor, the first end of described the second inductance, the first end of described the 7th capacitor, the collector electrode of described the first transistor, the first end of described the 5th resistor, the first end of described the first resistor be connected the first end of the first capacitor and connect, the second end of described the first capacitor is connected with the negative pole of described DC power supply, the second end of described the 3rd inductor respectively with the first end of described the tenth capacitor, the described the 3rd transistorized collector electrode, the first end of described the 8th resistor be connected the first end of the 9th capacitor and connect, the second end of described the tenth capacitor is connected with described antenna, the described the 3rd transistorized base stage respectively with the second end of described the 8th resistor be connected the first end of the 8th capacitor and be connected, the second end of described the 8th capacitor respectively with the collector electrode of described transistor seconds, the second end of described the second inductor, the first end of described the 7th resistor be connected the second end of the 7th capacitor and connect, the second end of described the 7th resistor respectively with the base stage of described transistor seconds be connected the second end of the 6th capacitor and be connected, the second end of described the 6th capacitor respectively with the first end of described the 4th capacitor be connected the first end of the 5th capacitor and be connected, the emitter of described the first transistor is connected with the second end of described the 6th resistor, the second end of described the 4th capacitor is connected with the second end of described the 5th resistor, the base stage of described the first transistor is connected with the first end of described the 3rd capacitor, the second end of described the 3rd capacitor respectively with the first end of described the first inductance be connected the first end of the 4th resistor and be connected, the second end of described the 4th resistor respectively with the second end of described the first inductance be connected the first end of piezoelectric ceramic piece and be connected, the second end of described piezoelectric ceramic piece respectively with the first end of described the 3rd resistor be connected the negative pole of diode and be connected, the second end of described the 3rd resistor respectively with described audio input end be connected the first end of the second capacitor and be connected, the second end of described the first resistor is connected with the first end of described the second resistor, the second end of described the second capacitor respectively with the second end of described the second resistor, the positive pole of described diode, the second end of described the 5th capacitor, the second end of described the 6th resistor, the emitter of described transistor seconds, the described the 3rd transistorized emitter be connected the cathode output end of DC power supply and connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220523025 CN202931295U (en) | 2012-10-14 | 2012-10-14 | Cordless telephone crystal oscillator type frequency modulation transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220523025 CN202931295U (en) | 2012-10-14 | 2012-10-14 | Cordless telephone crystal oscillator type frequency modulation transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202931295U true CN202931295U (en) | 2013-05-08 |
Family
ID=48221204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220523025 Expired - Fee Related CN202931295U (en) | 2012-10-14 | 2012-10-14 | Cordless telephone crystal oscillator type frequency modulation transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202931295U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731165A (en) * | 2012-10-14 | 2014-04-16 | 四川九鼎数码科技有限公司 | Crystal oscillator type frequency modulation transmitter for cordless telephone |
-
2012
- 2012-10-14 CN CN 201220523025 patent/CN202931295U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103731165A (en) * | 2012-10-14 | 2014-04-16 | 四川九鼎数码科技有限公司 | Crystal oscillator type frequency modulation transmitter for cordless telephone |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201639825U (en) | Intelligent switch | |
| CN204101903U (en) | With the intelligent wristwatch of bluetooth earphone and hand-free call function | |
| CN210721093U (en) | Equipment for controlling full-house electrical appliance in tea table shape | |
| CN202931295U (en) | Cordless telephone crystal oscillator type frequency modulation transmitter | |
| CN204597641U (en) | A kind of radio energy emitter | |
| CN103731165A (en) | Crystal oscillator type frequency modulation transmitter for cordless telephone | |
| CN202931444U (en) | Telephone wireless emitter | |
| CN207650991U (en) | A kind of mobile telephone external infrared launcher based on Type-C interfaces | |
| CN204362017U (en) | A kind of switching circuit and the electronic product with described switching circuit | |
| CN103607483A (en) | Mobile phone incoming call sensing sending device | |
| CN204046281U (en) | A kind of Micro Energy Lose piezoelectric energy collecting device of applicable random deformation mechanical energy input | |
| CN103731570A (en) | Wireless transmitter of telephone | |
| CN202979073U (en) | Wireless frequency modulated telephone microphone | |
| CN108873723A (en) | Smart home system | |
| CN205304883U (en) | Novel mobile phone shell | |
| CN203721022U (en) | Bidirectional integrated machine with multifunctional fixed telephone | |
| CN203314253U (en) | Bracelet with incoming-call induction and prompting function | |
| CN201247963Y (en) | Energy-saving mobile phone charger with auto-power-off function | |
| CN203166882U (en) | Novel long-distance transmitter | |
| CN111030275B (en) | Solar wireless charging device for household appliances | |
| CN202503168U (en) | Intelligent power socket controlled by cell phone | |
| CN206071103U (en) | A kind of visible ray wireless communications telephone booth | |
| CN206004098U (en) | A kind of Internet of Things outlet status alert circuit | |
| CN205621261U (en) | WIFI cell -phone remote control time switch | |
| CN204131556U (en) | A kind of telecommunication circuit with image and sound |
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: 20130508 Termination date: 20131014 |