JPS6435496A - High sound volume bell circuit - Google Patents
High sound volume bell circuitInfo
- Publication number
- JPS6435496A JPS6435496A JP19199587A JP19199587A JPS6435496A JP S6435496 A JPS6435496 A JP S6435496A JP 19199587 A JP19199587 A JP 19199587A JP 19199587 A JP19199587 A JP 19199587A JP S6435496 A JPS6435496 A JP S6435496A
- Authority
- JP
- Japan
- Prior art keywords
- power
- power consumption
- signal
- state
- sound volume
- 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
Links
Landscapes
- Alarm Systems (AREA)
Abstract
PURPOSE: To reduce the power consumption by connecting a power supply circuit of a large-volume bell to a DC power source through a switching element and supplying power only at the time of the presence of a start signal. CONSTITUTION: When there is not a signal between terminals 11 and 12 of a reception unit 1, an inverter 1A is in the waiting state, and an oscillation unit 2 consisting of oscillation circuits 17 to 19 is in the non-operating state, and an amplifier 22 of a preamplifier unit 3 is in the waiting state. Therefore, a current flowing to power lines 27 to 29 is small, and the voltage drop of a resistance 24 is small, and therefore, a transistor TR 30 is in the turned-off state. when a signal is applied to terminals 11 and 12, the inverter 1A is operated, and units 2 and 3 are set to the operating state. Consequently, the power consumption is reduced because the power supply circuit of a circuit part where the power consumption is relatively large is controlled.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62191995A JP2873332B2 (en) | 1987-07-30 | 1987-07-30 | High volume bell circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62191995A JP2873332B2 (en) | 1987-07-30 | 1987-07-30 | High volume bell circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6435496A true JPS6435496A (en) | 1989-02-06 |
JP2873332B2 JP2873332B2 (en) | 1999-03-24 |
Family
ID=16283863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62191995A Expired - Lifetime JP2873332B2 (en) | 1987-07-30 | 1987-07-30 | High volume bell circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2873332B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0378397U (en) * | 1989-11-27 | 1991-08-08 | ||
JP2007070838A (en) * | 2005-09-05 | 2007-03-22 | Shigeki Nakamura | Different-diameter pipe clamping structure of pipe clamp |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57173094U (en) * | 1981-04-27 | 1982-10-30 | ||
JPS6137839A (en) * | 1984-07-30 | 1986-02-22 | Kanegafuchi Chem Ind Co Ltd | Curable composition |
-
1987
- 1987-07-30 JP JP62191995A patent/JP2873332B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57173094U (en) * | 1981-04-27 | 1982-10-30 | ||
JPS6137839A (en) * | 1984-07-30 | 1986-02-22 | Kanegafuchi Chem Ind Co Ltd | Curable composition |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0378397U (en) * | 1989-11-27 | 1991-08-08 | ||
JP2007070838A (en) * | 2005-09-05 | 2007-03-22 | Shigeki Nakamura | Different-diameter pipe clamping structure of pipe clamp |
Also Published As
Publication number | Publication date |
---|---|
JP2873332B2 (en) | 1999-03-24 |
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