JPS6262398U - - Google Patents
Info
- Publication number
- JPS6262398U JPS6262398U JP15322585U JP15322585U JPS6262398U JP S6262398 U JPS6262398 U JP S6262398U JP 15322585 U JP15322585 U JP 15322585U JP 15322585 U JP15322585 U JP 15322585U JP S6262398 U JPS6262398 U JP S6262398U
- Authority
- JP
- Japan
- Prior art keywords
- audio signal
- signal amplification
- circuit
- amplification circuit
- output
- 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
Links
- 230000003321 amplification Effects 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 230000005236 sound signal Effects 0.000 claims 5
- 230000005856 abnormality Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Emergency Alarm Devices (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Measurement Of Current Or Voltage (AREA)
Description
第１図は本考案の一実施例における警報音発生
回路の回路図、第２図は従来例の回路図を示す。
２……音声増巾回路、４……正帰環回路、Ｔ…
…スイツチングトランジスタ、ＳＰ……スピーカ
。
FIG. 1 shows a circuit diagram of an alarm sound generating circuit according to an embodiment of the present invention, and FIG. 2 shows a circuit diagram of a conventional example. 2...Audio amplification circuit, 4 ...Positive feedback circuit, T...
...Switching transistor, SP...Speaker.
Claims (1)
声信号増巾回路出力により駆動されるスピーカと
、前記音声信号増巾回路出力をこの音声信号増巾
回路の入力端子に正帰環せしめる正帰環回路と、
異常時のみ前記正帰環回路を動作せしめるスイツ
チ手段とからなる警報音発生回路。 an audio signal amplification circuit for amplifying an audio signal; a speaker driven by the output of the audio signal amplification circuit; and a speaker for positive feedback of the output of the audio signal amplification circuit to an input terminal of the audio signal amplification circuit. return circuit and
An alarm sound generating circuit comprising switch means for operating the positive return circuit only in the event of an abnormality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15322585U JPS6262398U (en) | 1985-10-07 | 1985-10-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15322585U JPS6262398U (en) | 1985-10-07 | 1985-10-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6262398U true JPS6262398U (en) | 1987-04-17 |
Family
ID=31071915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15322585U Pending JPS6262398U (en) | 1985-10-07 | 1985-10-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6262398U (en) |
-
1985
- 1985-10-07 JP JP15322585U patent/JPS6262398U/ja active Pending
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