JPS62100725U - - Google Patents
Info
- Publication number
- JPS62100725U JPS62100725U JP19196885U JP19196885U JPS62100725U JP S62100725 U JPS62100725 U JP S62100725U JP 19196885 U JP19196885 U JP 19196885U JP 19196885 U JP19196885 U JP 19196885U JP S62100725 U JPS62100725 U JP S62100725U
- Authority
- JP
- Japan
- Prior art keywords
- output
- comparator
- inverting input
- input terminal
- terminal
- 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
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Manipulation Of Pulses (AREA)
- Noise Elimination (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図はその無入力時の動作波形図、第３図はＦＭ
ＩＦ用ＩＣのブロツク図、第４図はその内部コン
パレータを利用した波形整形回路の一例を示す回
路図、第５図は第４図の動作波形図である。
図中、２０はＦＭ ＩＦ用ＩＣ、２７はヒステ
リシス付スケルチ用コンパレータ、１２はその反
転入力端子、１３は出力端子、ＲＦは帰還抵抗で
ある。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is the operating waveform diagram when there is no input, and Figure 3 is the FM
FIG. 4 is a block diagram of the IF IC, FIG. 4 is a circuit diagram showing an example of a waveform shaping circuit using an internal comparator, and FIG. 5 is an operational waveform diagram of FIG. 4. In the figure, 20 is an FM IF IC, 27 is a squelch comparator with hysteresis, 12 is its inverting input terminal, 13 is an output terminal, and RF is a feedback resistor.
Claims (1)
シス付のスケルチ用コンパレータの出力端子と反
転入力端子との間に外付けで帰還抵抗を接続し、
該ＩＣの検波出力を外部から該コンパレータの反
転入力端子に入力して該出力端子から波形整形出
力を取出すようにしたことを特徴とする波形整形
回路。 Connect an external feedback resistor between the output terminal and the inverting input terminal of the squelch comparator with hysteresis provided inside the FM IF IC,
A waveform shaping circuit characterized in that a detected output of the IC is externally inputted to an inverting input terminal of the comparator and a waveform shaped output is taken out from the output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19196885U JPS62100725U (en) | 1985-12-13 | 1985-12-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19196885U JPS62100725U (en) | 1985-12-13 | 1985-12-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62100725U true JPS62100725U (en) | 1987-06-26 |
Family
ID=31146606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19196885U Pending JPS62100725U (en) | 1985-12-13 | 1985-12-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62100725U (en) |
-
1985
- 1985-12-13 JP JP19196885U patent/JPS62100725U/ja active Pending
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