JPS61174243U - - Google Patents
Info
- Publication number
- JPS61174243U JPS61174243U JP5669085U JP5669085U JPS61174243U JP S61174243 U JPS61174243 U JP S61174243U JP 5669085 U JP5669085 U JP 5669085U JP 5669085 U JP5669085 U JP 5669085U JP S61174243 U JPS61174243 U JP S61174243U
- Authority
- JP
- Japan
- Prior art keywords
- output
- microphone
- variable gain
- gain amplifier
- detection circuit
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985056690U JPH0419869Y2 (https=) | 1985-04-15 | 1985-04-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985056690U JPH0419869Y2 (https=) | 1985-04-15 | 1985-04-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61174243U true JPS61174243U (https=) | 1986-10-30 |
| JPH0419869Y2 JPH0419869Y2 (https=) | 1992-05-07 |
Family
ID=30580529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985056690U Expired JPH0419869Y2 (https=) | 1985-04-15 | 1985-04-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0419869Y2 (https=) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5525581U (https=) * | 1978-08-10 | 1980-02-19 |
-
1985
- 1985-04-15 JP JP1985056690U patent/JPH0419869Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5525581U (https=) * | 1978-08-10 | 1980-02-19 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0419869Y2 (https=) | 1992-05-07 |