JPS5579539A - Duplexer - Google Patents

Duplexer

Info

Publication number
JPS5579539A
JPS5579539A JP15318478A JP15318478A JPS5579539A JP S5579539 A JPS5579539 A JP S5579539A JP 15318478 A JP15318478 A JP 15318478A JP 15318478 A JP15318478 A JP 15318478A JP S5579539 A JPS5579539 A JP S5579539A
Authority
JP
Japan
Prior art keywords
converter
output
mode
amplifier
multivibrator
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
JP15318478A
Other languages
Japanese (ja)
Other versions
JPS6150539B2 (en
Inventor
Okie Tani
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP15318478A priority Critical patent/JPS5579539A/en
Publication of JPS5579539A publication Critical patent/JPS5579539A/en
Publication of JPS6150539B2 publication Critical patent/JPS6150539B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To secure the operation of a unit by providing a circuit which inhibits the switching of a duplexing switch in reception mode, when an earplug type earphone is used as a microphone.
CONSTITUTION: Contacts 71 and 72 of a duplexing switch in transmission mode are connected to contacts 73 and 74, the output of electroacoustic converter 5 is amplified by 1st amplifier 1 and then sent out to transmission line 6, and a signal applied to converter 5 from transmission line 6 is cut off by amplifier 1. In this state, the output of converter 5 is applied to amplifier 4, whose output operates waveform shaping circuit 82 and monostable multivibrator 92, but in this case, it is made improssible to invert FF11 with multivibrator 92 in set mode by the output of monostable multivibrator 91 set in reception mode. In this state, even if a tone generating short-period pulses is applied to converter 5 for the actuation of multivibrator 92, switch 7 is automatically changed over to the reception mode by inverting FF11. To change it over to the transmission mode, a short pulse is applied to converter 5 to invert FF11, thereby switching swtich 7.
COPYRIGHT: (C)1980,JPO&Japio
JP15318478A 1978-12-13 1978-12-13 Duplexer Granted JPS5579539A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15318478A JPS5579539A (en) 1978-12-13 1978-12-13 Duplexer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15318478A JPS5579539A (en) 1978-12-13 1978-12-13 Duplexer

Publications (2)

Publication Number Publication Date
JPS5579539A true JPS5579539A (en) 1980-06-16
JPS6150539B2 JPS6150539B2 (en) 1986-11-05

Family

ID=15556872

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15318478A Granted JPS5579539A (en) 1978-12-13 1978-12-13 Duplexer

Country Status (1)

Country Link
JP (1) JPS5579539A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111344U (en) * 1983-01-19 1984-07-27 株式会社ケンウッド Transmission/reception control circuit in data communication
JPS6019240U (en) * 1983-07-18 1985-02-09 株式会社ケンウッド Data communication interface
JP2010539788A (en) * 2007-09-14 2010-12-16 エイチ・ピー・ブイ・テクノロジーズ・インコーポレーテツド Full-range planar magnetic microphone and its array

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS522208A (en) * 1975-06-24 1977-01-08 Tani Denki Kogyo Kk Means for genratig signal to switch sending and receiving

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS522208A (en) * 1975-06-24 1977-01-08 Tani Denki Kogyo Kk Means for genratig signal to switch sending and receiving

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59111344U (en) * 1983-01-19 1984-07-27 株式会社ケンウッド Transmission/reception control circuit in data communication
JPH0323726Y2 (en) * 1983-01-19 1991-05-23
JPS6019240U (en) * 1983-07-18 1985-02-09 株式会社ケンウッド Data communication interface
JP2010539788A (en) * 2007-09-14 2010-12-16 エイチ・ピー・ブイ・テクノロジーズ・インコーポレーテツド Full-range planar magnetic microphone and its array

Also Published As

Publication number Publication date
JPS6150539B2 (en) 1986-11-05

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