JPH0164226U - - Google Patents
Info
- Publication number
- JPH0164226U JPH0164226U JP1987159566U JP15956687U JPH0164226U JP H0164226 U JPH0164226 U JP H0164226U JP 1987159566 U JP1987159566 U JP 1987159566U JP 15956687 U JP15956687 U JP 15956687U JP H0164226 U JPH0164226 U JP H0164226U
- Authority
- JP
- Japan
- Prior art keywords
- pulse width
- signal
- modulated signal
- demodulation circuit
- isolator
- 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
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Description
第１図は本考案に係る復調回路の一実施例の接
続図、第２図は第１図の動作を説明する為の波形
図、第３図は本考案に係る復調回路の他の実施例
の接続図、第４図は従来のこの種の復調回路の一
例の接続図である。
１０……パルス幅変調回路、２０……アイソレ
ータ、３０……復調回路、４０……出力端子、５
０……パルス検出回路、５１……リトリガラブル
・モノステーブル・マルチバイブレータ、５３，
５４……スイツチ。
Fig. 1 is a connection diagram of one embodiment of the demodulation circuit according to the present invention, Fig. 2 is a waveform diagram for explaining the operation of Fig. 1, and Fig. 3 is another embodiment of the demodulation circuit according to the present invention. FIG. 4 is a connection diagram of an example of a conventional demodulation circuit of this type. 10... Pulse width modulation circuit, 20... Isolator, 30... Demodulation circuit, 40... Output terminal, 5
0... Pulse detection circuit, 51... Retriggerable monostable multivibrator, 53,
54...Switch.
Claims (1)
変調信号をアイソレータを介してフイルタに加え
て復調するようにした復調回路において、前記ア
イソレータの出力をトリガ入力としその出力パル
ス幅が前記パルス幅変調信号の１周期より長く選
ばれたリトリガラブル・モノステーブル・マルチ
バイブレータと、このリトリガラブル・モノステ
ーブル・マルチバイブレータの出力により駆動さ
れ前記フイルタの出力端に接続されたスイツチを
設け、このスイツチを介して復調信号を取出すよ
うに構成したパルス幅変調信号の復調回路。 In a demodulation circuit that modulates an input signal into a pulse width signal and demodulates the pulse width modulated signal by applying it to a filter via an isolator, the output of the isolator is used as a trigger input, and the output pulse width is used as the pulse width modulated signal. A retriggerable monostable multivibrator selected for a period longer than one period of A demodulation circuit for a pulse width modulated signal configured to extract the pulse width modulation signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987159566U JPH0164226U (en) | 1987-10-19 | 1987-10-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987159566U JPH0164226U (en) | 1987-10-19 | 1987-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0164226U true JPH0164226U (en) | 1989-04-25 |
Family
ID=31440892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987159566U Pending JPH0164226U (en) | 1987-10-19 | 1987-10-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0164226U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5733656U (en) * | 1980-08-05 | 1982-02-22 |
-
1987
- 1987-10-19 JP JP1987159566U patent/JPH0164226U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5733656U (en) * | 1980-08-05 | 1982-02-22 |
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