CN2143031Y - Frequency-modulating power line carrier - Google Patents
Frequency-modulating power line carrier Download PDFInfo
- Publication number
- CN2143031Y CN2143031Y CN 92234544 CN92234544U CN2143031Y CN 2143031 Y CN2143031 Y CN 2143031Y CN 92234544 CN92234544 CN 92234544 CN 92234544 U CN92234544 U CN 92234544U CN 2143031 Y CN2143031 Y CN 2143031Y
- Authority
- CN
- China
- Prior art keywords
- audio frequency
- audio
- transmitter
- receive cell
- transceiver
- 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
Images
Landscapes
- Radio Relay Systems (AREA)
Abstract
The utility model relates to a carrier wave transceiver with line transmission by electric power for wiring electric locomotive in diggings. Original separate type devices are reconstructed into an integrative carrier wave transceiver. Original mikes and loud-speakers are replaced by an audio transceiver. Relays controlled by buttons switch status. The audio transceiver is connected with the original transmitter by a pre-amplifier circuit as transmitting. The audio transceiver is coupled with the original power amplifying output terminal by an audio output transformer as receiving. The integrative carrier wave transceiver has compact structure, convenient usage, maintenance and management.
Description
The utility model relates to a kind of carrier transmitting-receiving machine by the transmission of electric power dispensing line.
The at present domestic stringing electrical locomotive carrier terminal equipment that generally uses no matter be frequency modulation, amplitude modulation or induction type, all is provided with separate type two covering devices, i.e. emitter and receiving system.This carrier terminal equipment also has a hand microphone and a loudspeaker separation member except that two main frame bodies.The major defect of this class device is that separation member is that loudspeaker and transmitter are fragile or lose, and brings many difficulties to normal communication, and the sensitivity of transmitter sender is low and use unhygienicly, and loudspeaker send drone hum during work influences driver attention.
The purpose of this utility model is to disclose a kind of transceiving integrated carrier terminal equipment technical scheme, to overcome the above-mentioned deficiency of existing carrier terminal equipment.
The method that realizes this task is to adopt an audio frequency transmit-receive cell to replace original loudspeaker and microphone, a relay do transmitting-receiving switching of pressing sensitive switch control by hand, the contact sets of this relay makes described audio frequency transmit-receive cell, antenna and transceiver circuit are in two kinds of connection status, first kind of state is the push-button switch opening, this moment, relay contact was connected the audio frequency transmit-receive cell with the secondary of an audio frequency output transformer, the elementary audio output that is connected on described receiver of this audio frequency output transformer, and antenna is connected with the receiver signal input end, the receiver current supply circuit is connected, second kind of state condition is the push-button switch closure state, this moment, relay contact was connected described audio frequency transmit-receive cell with the transmitter signal input end, and antenna is connected with the transmitter carrier signal output end, the transmitter current supply circuit is connected.
For increasing the sensitivity of described audio frequency transmit-receive cell sender, before the signal input end of described transmitter, also increase a preamplifier.
Device after the improvement is transceiving integrated type, and receiver and transmitter unite two into one, and no longer uses discrete device, makes in carrying maintenance and management.Sender sensitivity obviously improves, basic hum free noise during reception, and the key property of original transceiver obtains keeping.This carrier terminal equipment is well received at the scene.
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the circuit theory diagrams of integrated stringing electrical locomotive carrier terminal equipment.Transmitter circuit 1 and receiver circuit 2 are existing frequency modulated carrier machine circuits among the figure.Button AN connects with relay J, is connected in the current supply circuit, and three groups of contact J1 of this relay, J2 and J3 are respectively applied for audio frequency transmit-receive cell Y, and the power supply power supply and the antenna of transmission circuit 1,2 switch.When button AN discharges, the relay J outage, audio frequency transmit-receive cell Y is connected through B level of J1 and audio frequency output transformer, and the elementary of this audio frequency transformer B is connected with the audio frequency power amplifier output of receiving circuit 2 through capacitor C; The earth terminal of receiving circuit 2 is connected with ground wire through J2, power connection, and antenna AE is connected with receiving circuit 2 carrier signal inputs through J3, and this moment, carrier terminal equipment was in accepting state; The indicator light DI that is connected in the receiver power supply loop is glittering.When button AN presses, relay J is connected, contact J1, J2 and J3 switch, audio frequency transmit-receive cell Y is connected on the input of the preamplifier 3 of transtation mission circuit 1 through J1, the earth terminal of transtation mission circuit 1 and preamplifier 3 is connected with ground wire through J2, power connection, antenna AE is connected with the carrier wave output of transtation mission circuit 1 through J3.This moment, carrier terminal equipment was in the sender state.
Applier 3 is by transistor BG before described, and capacitor C 1, C2 and resistance R 1, R2, R3, R4 form, and audio frequency is received and dispatched first device Y and connect the base stage of transistor BG through capacitor C 1, and its collector electrode audio signal after capacitor C 2 will be amplified is delivered to the input of transtation mission circuit 1.
Improving the back carrier terminal equipment realizes integrated, newly-increased audio frequency transformer and pre-amplification circuit all are located on the former wiring board, the audio frequency transmit-receive cell, reception indicator light and push-button switch are located on the panel, easy to operate, the source of sound coverage is 200cm during sender, only is 10cm originally, and other fundamental characteristics of the receiver of typing and transmitter are uninfluenced.
Claims (2)
1, a kind of frequency modulation power line carrier, it is characterized in that the shared audio frequency transmit-receive cell of described carrier terminal equipment, and through a relay do transmitting-receiving switching by push-button switch control, the contact sets of this relay makes described audio frequency transmit-receive cell and antenna and transceiver circuit be in two kinds of connection status, first kind of state is the push-button switch opening, this moment, relay contact was connected the audio frequency transmit-receive cell with the secondary of an audio frequency output transformer, the elementary audio output that is connected on described receiver of this audio frequency output transformer, and antenna is connected with the receiver signal input end, the receiver current supply circuit is connected, second kind of state is the push-button switch closure state, this moment, relay contact was connected described audio frequency transmit-receive cell with the transmitter signal input end, and antenna is connected with the transmitter carrier signal output end, the transmitter current supply circuit is connected.
2,, it is characterized in that between the audio signal input of described transmitter and audio frequency transmit-receive cell, also increasing an audio frequency preamplifier state is arranged by the described frequency modulation power line carrier of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92234544 CN2143031Y (en) | 1992-10-22 | 1992-10-22 | Frequency-modulating power line carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92234544 CN2143031Y (en) | 1992-10-22 | 1992-10-22 | Frequency-modulating power line carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2143031Y true CN2143031Y (en) | 1993-09-29 |
Family
ID=33776576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92234544 Expired - Fee Related CN2143031Y (en) | 1992-10-22 | 1992-10-22 | Frequency-modulating power line carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2143031Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788474A (en) * | 2016-12-08 | 2017-05-31 | 广州海格通信集团股份有限公司 | Switch the device of receiving and transmitting signal path |
-
1992
- 1992-10-22 CN CN 92234544 patent/CN2143031Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788474A (en) * | 2016-12-08 | 2017-05-31 | 广州海格通信集团股份有限公司 | Switch the device of receiving and transmitting signal path |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1233881A (en) | Radio transceiver including an antenna switching circuit | |
| US3644681A (en) | Cordless telephone system | |
| CN2143031Y (en) | Frequency-modulating power line carrier | |
| CN201499212U (en) | Television with function of wireless electronic doorbell | |
| CN206251282U (en) | A kind of studio broadcast intercom | |
| CN201156734Y (en) | Infrared system and earphone having compressed transmission and receiving extension function | |
| CN2256575Y (en) | Multifunctional Kara OK conducting machine | |
| KR101760281B1 (en) | Wireless Communication Device Having Earth Structure | |
| CN2250615Y (en) | infrared wireless loudspeaker box | |
| CN217470211U (en) | Wireless control microphone | |
| CN219642377U (en) | Double Bluetooth wireless control device | |
| CN2406432Y (en) | Multifunction wireless microphone and earphone device | |
| CN210868080U (en) | Wireless microphone device | |
| CN2214052Y (en) | Multifunction audio-frequence signal change machine | |
| CN2296102Y (en) | infrared emitting/receiving device for TV audio signals | |
| CN2178970Y (en) | TV remote controllor with aural transmitting receive | |
| CN206369946U (en) | A kind of vehicle radio station intelligent assistance system based on ARM mainboards | |
| CN201118573Y (en) | Wireless earphone with wireless sound box function | |
| CN201111330Y (en) | Multifunctional apparatus suitable for hearing barrier person | |
| CN2199645Y (en) | Multifunctional tourist explaining apparatus | |
| CN2148443Y (en) | Radio simultaneous interpretation arrangement | |
| CN207339836U (en) | A kind of binary channels intercommunication team explains equipment | |
| CN2136563Y (en) | Infrared acoustic transmission device with tv sound accompaniment | |
| CN2241949Y (en) | Transmitter | |
| CN2165576Y (en) | Wireless frequency modulating transmitter-receiver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |