JPH0320550U - - Google Patents
Info
- Publication number
- JPH0320550U JPH0320550U JP7959289U JP7959289U JPH0320550U JP H0320550 U JPH0320550 U JP H0320550U JP 7959289 U JP7959289 U JP 7959289U JP 7959289 U JP7959289 U JP 7959289U JP H0320550 U JPH0320550 U JP H0320550U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- squelch
- mute
- squelch circuit
- receiver
- 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
- 239000013078 crystal Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Noise Elimination (AREA)
Description
第１図は従来のＦＭ受信機の系統を示すもので
ある。
１……入力端子、２……高周波増幅部、３……
第１ミクサ、４……第１水晶発振回路、５……て
い倍回路、６……第１中間増幅回路、７……第２
ミクサ、８……第２水晶発振回路、９……第２中
間増幅回路、１０……復調回路、１１……ノイズ
スケルチ回路、１２……トーンスケルチ回路、１
３……ミユート回路、１４……音声電力回路であ
る。
第２図は本考案のＦＭ受信機の系統を示すもの
である。１〜１４……従来の系統と同一である、
１５……キヤリアスケルチ回路、１６……モノス
テーブルマルチ回路、１７……スイツチ回路。
第３図は波形比較図である。
FIG. 1 shows the system of a conventional FM receiver. 1...Input terminal, 2...High frequency amplification section, 3...
1st mixer, 4...first crystal oscillation circuit, 5...multiplier circuit, 6...first intermediate amplifier circuit, 7...second
Mixer, 8... Second crystal oscillation circuit, 9... Second intermediate amplifier circuit, 10... Demodulation circuit, 11... Noise squelch circuit, 12... Tone squelch circuit, 1
3...Mute circuit, 14...Audio power circuit. FIG. 2 shows the system of the FM receiver of the present invention. 1 to 14... Same as the conventional system,
15... Carrier squelch circuit, 16... Mono stable multi circuit, 17... Switch circuit. FIG. 3 is a waveform comparison diagram.
Claims (1)
スケルチ回路、ノイズスケルチ回路、トーンスケ
ルチ回路、音声回路を開閉するミュート回路から
構成される回路において、キヤリアスケルチ回路
、ノイズスケルチ回路、トーンスケルチ回路を論
理積回路を通し、ミユート回路に接続、かつキヤ
リアスケルチ回路出力にスイツチとモノステーブ
ルマルチ回路を通しミユート回路に接続すること
を特徴とするスケルチ回路。 In the squelch circuit of an FM receiver, the circuit consists of a chiaria squelch circuit, a noise squelch circuit, a tone squelch circuit, and a mute circuit that opens and closes the audio circuit. , the squelch circuit is connected to the mute circuit, and the output of the carrier squelch circuit is connected to the mute circuit through a switch and a monostable multi-circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7959289U JPH0320550U (en) | 1989-07-07 | 1989-07-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7959289U JPH0320550U (en) | 1989-07-07 | 1989-07-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0320550U true JPH0320550U (en) | 1991-02-28 |
Family
ID=31623887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7959289U Pending JPH0320550U (en) | 1989-07-07 | 1989-07-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0320550U (en) |
-
1989
- 1989-07-07 JP JP7959289U patent/JPH0320550U/ja active Pending
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