JPS5583344A - Signal change-over circuit - Google Patents

Signal change-over circuit

Info

Publication number
JPS5583344A
JPS5583344A JP15631478A JP15631478A JPS5583344A JP S5583344 A JPS5583344 A JP S5583344A JP 15631478 A JP15631478 A JP 15631478A JP 15631478 A JP15631478 A JP 15631478A JP S5583344 A JPS5583344 A JP S5583344A
Authority
JP
Japan
Prior art keywords
circuit
output
power
signal generating
conduct
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.)
Pending
Application number
JP15631478A
Other languages
Japanese (ja)
Inventor
Masahiro Sakakibara
Kyoichi Kudo
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15631478A priority Critical patent/JPS5583344A/en
Publication of JPS5583344A publication Critical patent/JPS5583344A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

PURPOSE:To reduce power consumption and also to increase reliability by selectively supplying a power voltage only one of signal generating circuits and also by removing an influence of a unit in trouble by a semiconductor switching element. CONSTITUTION:When power change-over circuit 6 selects 1st signal generating circuit 1, the output of circuit 1 let transistor Tr7 of output circuit 3 conduct and its output is led out from terminal 4. Now, if circuit 1 gets out of order, a power control signal is sent to circuit 6 to exercise control so that a voltage from power supply 5 will be supplied to 2nd signal generating circuit 2 by switching. Consequently, circuit 2 starts operating and its output makes Tr8 conduct to lead the output out from terminal 4. On the stop of the power supply to circuit 1, Tr7 turns OFF, so that the output of circuit 2 will be no influence of the fault of circuit 1.
JP15631478A 1978-12-20 1978-12-20 Signal change-over circuit Pending JPS5583344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15631478A JPS5583344A (en) 1978-12-20 1978-12-20 Signal change-over circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15631478A JPS5583344A (en) 1978-12-20 1978-12-20 Signal change-over circuit

Publications (1)

Publication Number Publication Date
JPS5583344A true JPS5583344A (en) 1980-06-23

Family

ID=15625082

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15631478A Pending JPS5583344A (en) 1978-12-20 1978-12-20 Signal change-over circuit

Country Status (1)

Country Link
JP (1) JPS5583344A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01183688A (en) * 1988-01-18 1989-07-21 Hitachi Ltd Dot clock reproducing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01183688A (en) * 1988-01-18 1989-07-21 Hitachi Ltd Dot clock reproducing device

Similar Documents

Publication Publication Date Title
JPS5763280A (en) Driving circuit for heat-sensitive recorder
JPS5583344A (en) Signal change-over circuit
JPS5781630A (en) Electronic circuit
JPS57103522A (en) Power supply device
JPS54945A (en) Integrated circuit providing output control function
JPS5723123A (en) Semiconductor device having volatile memory
JPS5735422A (en) Semiconductor circuit
JPS5535574A (en) Logic device
JPS5769943A (en) Selecting callout device
JPS56159716A (en) Direct-current electric power device
JPS6485568A (en) Semiconductor device
JPS54141174A (en) Supply current value switching circuit
JPS5773529A (en) Switching circuit
JPS5441018A (en) Supply voltage control circuit incorporating monolithic ic
JPS5798175A (en) Semiconductor memory device
JPS57188133A (en) Transistor relay circuit
JPS57129530A (en) Integrated circuit
JPS5678230A (en) Analog signal selecting circuit
JPS5752235A (en) Operating circuit device using superconductive material element
JPS57203114A (en) Power supply circuit
JPS5550732A (en) Integrated latch circuit
JPS5478964A (en) Selection circuit
JPS57188134A (en) Ac two-wire type contactless switch
JPS554132A (en) Schmitt circuit
JPS5546678A (en) Switching circuit