JPS5487418A - Radio transmitter - Google Patents

Radio transmitter

Info

Publication number
JPS5487418A
JPS5487418A JP15583977A JP15583977A JPS5487418A JP S5487418 A JPS5487418 A JP S5487418A JP 15583977 A JP15583977 A JP 15583977A JP 15583977 A JP15583977 A JP 15583977A JP S5487418 A JPS5487418 A JP S5487418A
Authority
JP
Japan
Prior art keywords
circuit
transmission
output
switching circuit
power supply
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.)
Granted
Application number
JP15583977A
Other languages
Japanese (ja)
Other versions
JPS5946455B2 (en
Inventor
Yasuhiro Mizota
Kazuo Imazeki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP52155839A priority Critical patent/JPS5946455B2/en
Publication of JPS5487418A publication Critical patent/JPS5487418A/en
Publication of JPS5946455B2 publication Critical patent/JPS5946455B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To prevent a system from breaking down by cutting off the power supply to an original oscillation circuit for transmission when a switching circuit in a transmitter gets out of order. CONSTITUTION:Normally, a DC signal of transmission ''ON'' from transmission control circuit 1 is switched by switching circuit 4 to connect power supply 7 to multiplying circuit 5, thereby driving the transmitter. The output of transmission control circuit 1 is compared with that of switching circuit 4 by comparator 2. If switching circuit 4 gets out of order, switching circuit 3 is controlled by the output of comparator circuit 2 and if they disagree, power supply 7 is cut off to stop the original oscillation circuit for transmission to generate its output, thereby cutting off the output of the transmission part. Consequently, the system is prevented from breaking down.
JP52155839A 1977-12-23 1977-12-23 wireless transmitter Expired JPS5946455B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52155839A JPS5946455B2 (en) 1977-12-23 1977-12-23 wireless transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52155839A JPS5946455B2 (en) 1977-12-23 1977-12-23 wireless transmitter

Publications (2)

Publication Number Publication Date
JPS5487418A true JPS5487418A (en) 1979-07-11
JPS5946455B2 JPS5946455B2 (en) 1984-11-13

Family

ID=15614615

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52155839A Expired JPS5946455B2 (en) 1977-12-23 1977-12-23 wireless transmitter

Country Status (1)

Country Link
JP (1) JPS5946455B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6468050A (en) * 1987-09-09 1989-03-14 Mitsubishi Electric Corp Mobile station equipment for land mobile radio telephone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6468050A (en) * 1987-09-09 1989-03-14 Mitsubishi Electric Corp Mobile station equipment for land mobile radio telephone

Also Published As

Publication number Publication date
JPS5946455B2 (en) 1984-11-13

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