JPS5489600A - Alarm unit - Google Patents

Alarm unit

Info

Publication number
JPS5489600A
JPS5489600A JP15924477A JP15924477A JPS5489600A JP S5489600 A JPS5489600 A JP S5489600A JP 15924477 A JP15924477 A JP 15924477A JP 15924477 A JP15924477 A JP 15924477A JP S5489600 A JPS5489600 A JP S5489600A
Authority
JP
Japan
Prior art keywords
circuit
different
sound
pulse generating
resistance
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
JP15924477A
Other languages
Japanese (ja)
Other versions
JPS6036594B2 (en
Inventor
Naoki Takahashi
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.)
Casio Computer Co Ltd
Original Assignee
Casio Computer 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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Priority to JP15924477A priority Critical patent/JPS6036594B2/en
Publication of JPS5489600A publication Critical patent/JPS5489600A/en
Publication of JPS6036594B2 publication Critical patent/JPS6036594B2/en
Expired legal-status Critical Current

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  • Electric Clocks (AREA)

Abstract

PURPOSE: To enable to select the sound pressure of sound body with the simple constitution of circuit, by using the transmission gate different in resistance value using MOS transistor between the pulse generating circuit and the high voltage generation circuit.
CONSTITUTION: The pulse generating circuit 1 produces clock pulse with the alarm signal from the clock unit 2 and it is delivered to the transfer line selection circuit 4. The circuit 4 consists of the MOS transistor (MOS Tr)5a and 5b different in ON- reistance and the transfer lines 4a and 4b. On the other hand, the operation signal of the control switch 6 is inverted at FF7, and the output is fed to the gates of MOSTt 5a and 5b via the MOSTr5a and 5b and the inverter 8. The conduction of MOSTr5a and 5b is selected with the operation of the switch 6, and the output of the pulse generating circuit 1 is fed to the coil 10 via either of the circuits different in ON-resistance, producing sound with the vibrator 11. The vibrator produces sound different in the sound pressure depending on the selection of ON-resistance. Thus, the alarm suitable for electronic watches can be established with a simple circuit configuration.
COPYRIGHT: (C)1979,JPO&Japio
JP15924477A 1977-12-27 1977-12-27 alarm device Expired JPS6036594B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15924477A JPS6036594B2 (en) 1977-12-27 1977-12-27 alarm device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15924477A JPS6036594B2 (en) 1977-12-27 1977-12-27 alarm device

Publications (2)

Publication Number Publication Date
JPS5489600A true JPS5489600A (en) 1979-07-16
JPS6036594B2 JPS6036594B2 (en) 1985-08-21

Family

ID=15689486

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15924477A Expired JPS6036594B2 (en) 1977-12-27 1977-12-27 alarm device

Country Status (1)

Country Link
JP (1) JPS6036594B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5738500A (en) * 1980-08-20 1982-03-03 Ricoh Kk Sound production driving circuit
JPS5790697A (en) * 1980-11-28 1982-06-05 Tokyo Shibaura Electric Co Notifying device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5738500A (en) * 1980-08-20 1982-03-03 Ricoh Kk Sound production driving circuit
JPS5790697A (en) * 1980-11-28 1982-06-05 Tokyo Shibaura Electric Co Notifying device

Also Published As

Publication number Publication date
JPS6036594B2 (en) 1985-08-21

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