JPS6420790A - Dial pulse transmitting circuit - Google Patents

Dial pulse transmitting circuit

Info

Publication number
JPS6420790A
JPS6420790A JP17592987A JP17592987A JPS6420790A JP S6420790 A JPS6420790 A JP S6420790A JP 17592987 A JP17592987 A JP 17592987A JP 17592987 A JP17592987 A JP 17592987A JP S6420790 A JPS6420790 A JP S6420790A
Authority
JP
Japan
Prior art keywords
dial
signal
make
electronic
dial pulse
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
JP17592987A
Other languages
Japanese (ja)
Other versions
JPH0444476B2 (en
Inventor
Masaya Kuwano
Yoshihiro Kawada
Hiroshi Wakabayashi
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.)
Iwatsu Electric Co Ltd
Original Assignee
Iwatsu 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 Iwatsu Electric Co Ltd filed Critical Iwatsu Electric Co Ltd
Priority to JP17592987A priority Critical patent/JPS6420790A/en
Publication of JPS6420790A publication Critical patent/JPS6420790A/en
Publication of JPH0444476B2 publication Critical patent/JPH0444476B2/ja
Granted legal-status Critical Current

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Abstract

PURPOSE:To contrive miniaturization and a low cost by transmitting a dial pulse with a semi-conductor driven by an optically combined element without using a relay contact when the dial signal is transmitted. CONSTITUTION:At the time of a dial break, when a photo-coupler PC1 is turned off to stop a current (i)3, an electronic SINK circuit 2 is driven and a direct current loop is formed immediately after a next dial make is occurred. At the time of the dial make, when the dial signal input of a TTL level corresponding to a dial operation or of a C-MOS level is inverted by an inverter INV and turned low, an electronic dial pulse transmitting circuit 3 becomes the movement of (Q6OFF PC2OFF Q3ON Q4ON), the loop of (L1 a diode bridge 1 the electronic SINK circuit 2 Q4 the diode bridge 1 L2) is formed and is outputted as the make signal. Thus, the dial signal can be transmitted by simultaneously controlling the photo-couplers PC1 and PC2 with the dial pulse signal.
JP17592987A 1987-07-16 1987-07-16 Dial pulse transmitting circuit Granted JPS6420790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17592987A JPS6420790A (en) 1987-07-16 1987-07-16 Dial pulse transmitting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17592987A JPS6420790A (en) 1987-07-16 1987-07-16 Dial pulse transmitting circuit

Publications (2)

Publication Number Publication Date
JPS6420790A true JPS6420790A (en) 1989-01-24
JPH0444476B2 JPH0444476B2 (en) 1992-07-21

Family

ID=16004719

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17592987A Granted JPS6420790A (en) 1987-07-16 1987-07-16 Dial pulse transmitting circuit

Country Status (1)

Country Link
JP (1) JPS6420790A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0457107A (en) * 1990-06-27 1992-02-24 Hitachi Ltd Controller for robot

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS582512A (en) * 1981-06-26 1983-01-08 Sanyo Electric Co Ltd Petroleum combustor
JPS62217794A (en) * 1986-03-19 1987-09-25 Iwatsu Electric Co Ltd Current loop forming circuit
JPS62217755A (en) * 1986-03-19 1987-09-25 Iwatsu Electric Co Ltd Dial pulse transmitting device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS582512A (en) * 1981-06-26 1983-01-08 Sanyo Electric Co Ltd Petroleum combustor
JPS62217794A (en) * 1986-03-19 1987-09-25 Iwatsu Electric Co Ltd Current loop forming circuit
JPS62217755A (en) * 1986-03-19 1987-09-25 Iwatsu Electric Co Ltd Dial pulse transmitting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0457107A (en) * 1990-06-27 1992-02-24 Hitachi Ltd Controller for robot

Also Published As

Publication number Publication date
JPH0444476B2 (en) 1992-07-21

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees