JPS6249637B2 - - Google Patents

Info

Publication number
JPS6249637B2
JPS6249637B2 JP57210026A JP21002682A JPS6249637B2 JP S6249637 B2 JPS6249637 B2 JP S6249637B2 JP 57210026 A JP57210026 A JP 57210026A JP 21002682 A JP21002682 A JP 21002682A JP S6249637 B2 JPS6249637 B2 JP S6249637B2
Authority
JP
Japan
Prior art keywords
self
excited oscillation
circuit
frequency
amplifier
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.)
Expired
Application number
JP57210026A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58111988A (ja
Inventor
Michio Kudo
Rinpei Hayashibe
Tatsuo Fukami
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 JP57210026A priority Critical patent/JPS58111988A/ja
Publication of JPS58111988A publication Critical patent/JPS58111988A/ja
Publication of JPS6249637B2 publication Critical patent/JPS6249637B2/ja
Granted legal-status Critical Current

Links

JP57210026A 1982-11-29 1982-11-29 圧電式警報器における音色調整回路 Granted JPS58111988A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57210026A JPS58111988A (ja) 1982-11-29 1982-11-29 圧電式警報器における音色調整回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57210026A JPS58111988A (ja) 1982-11-29 1982-11-29 圧電式警報器における音色調整回路

Publications (2)

Publication Number Publication Date
JPS58111988A JPS58111988A (ja) 1983-07-04
JPS6249637B2 true JPS6249637B2 (en]) 1987-10-20

Family

ID=16582583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57210026A Granted JPS58111988A (ja) 1982-11-29 1982-11-29 圧電式警報器における音色調整回路

Country Status (1)

Country Link
JP (1) JPS58111988A (en])

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR900003594B1 (ko) * 1985-01-07 1990-05-26 니홍덴소 가부시기 가이샤 경보음 발생장치
JPS62196697A (ja) * 1986-02-25 1987-08-31 シャープ株式会社 アラ−ム報知回路

Also Published As

Publication number Publication date
JPS58111988A (ja) 1983-07-04

Similar Documents

Publication Publication Date Title
JPH0685343A (ja) 電力用圧電トランスコンバータ
US4232241A (en) Electric circuit for driving a piezoelectric vibrator
US4139842A (en) Audible alarm unit
JPS6249637B2 (en])
US4215566A (en) Densitometer with voltage driver
US4668938A (en) Switching amplifier and electronic siren employing the same
JPS6321200B2 (en])
JPH0139595B2 (en])
JPS6239434Y2 (en])
JPS6344874Y2 (en])
JPS5813973Y2 (ja) 超音波振動子励振装置
JP2914663B2 (ja) 音響信号形成回路
JPS5811640B2 (ja) 音響発生器用の駆動回路
KR900005436A (ko) 전화발신음을 이용한 브이씨알의 즉시 예약 녹화장치
JP3226617B2 (ja) ベル信号発生回路
JPS598961B2 (ja) トランジスタハツシンカイロ
JPS61112197A (ja) 圧電式警報器
JPS6324554Y2 (en])
JPS6318073Y2 (en])
JPH0225200A (ja) 圧電サウンダ
JPH08288983A (ja) リンガ回路
JPS6318072Y2 (en])
JPS5971399U (ja) 減衰音系楽音の合成回路
JPH07117835B2 (ja) 発音体の駆動方法
JPS63156405A (ja) 圧電信号発信装置