JPS6037944U - Intermediate frequency band switching circuit - Google Patents
Intermediate frequency band switching circuitInfo
- Publication number
- JPS6037944U JPS6037944U JP12832583U JP12832583U JPS6037944U JP S6037944 U JPS6037944 U JP S6037944U JP 12832583 U JP12832583 U JP 12832583U JP 12832583 U JP12832583 U JP 12832583U JP S6037944 U JPS6037944 U JP S6037944U
- Authority
- JP
- Japan
- Prior art keywords
- intermediate frequency
- frequency band
- switching circuit
- band switching
- 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
Landscapes
- Noise Elimination (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の回路のブロック図、および第２図は本考
案の一実施例よりなる中間周波帯域切換回路のブロック
図である。
４・・・・・・ワイド系中間周波部、７・・・・・・ナ
ロー系中間周波部、９′・・・・・・切換スイッチ、１
０・・・・・・引算器、１１・・・・・・レベル検波器
、１３・・・・・・シュミット回路、１４・・・・・・
反転アンプ。FIG. 1 is a block diagram of a conventional circuit, and FIG. 2 is a block diagram of an intermediate frequency band switching circuit according to an embodiment of the present invention. 4... Wide intermediate frequency section, 7... Narrow intermediate frequency section, 9'... Selector switch, 1
0...Subtractor, 11...Level detector, 13...Schmitt circuit, 14...
Inverting amplifier.
Claims (1)
信機において、前記中間周波部の一方の帯域フィルタの
入出力差を抽出し検波する手段を設けるとともに、受信
機の入力が設定値以下の場合、何れか一方の中間周波部
のシグナルメータ出力を反転させる手段を設け、これら
両方の手段の出力を切換スイッチに印加することにより
、受信機の中間周波帯域を切り換えるように構成したこ
とを特徴とする中間周波帯域切換回路。In a receiver having two intermediate frequency sections with mutually different passband widths, a means is provided for extracting and detecting the input-output difference of one band filter of the intermediate frequency section, and when the input to the receiver is less than a set value. , characterized in that means is provided for inverting the signal meter output of one of the intermediate frequency sections, and the intermediate frequency band of the receiver is switched by applying the outputs of both of these means to a changeover switch. intermediate frequency band switching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12832583U JPS6037944U (en) | 1983-08-22 | 1983-08-22 | Intermediate frequency band switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12832583U JPS6037944U (en) | 1983-08-22 | 1983-08-22 | Intermediate frequency band switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6037944U true JPS6037944U (en) | 1985-03-15 |
Family
ID=30291150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12832583U Pending JPS6037944U (en) | 1983-08-22 | 1983-08-22 | Intermediate frequency band switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6037944U (en) |
-
1983
- 1983-08-22 JP JP12832583U patent/JPS6037944U/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6037944U (en) | Intermediate frequency band switching circuit | |
| JPS6066176U (en) | Clamp level control circuit | |
| JPS58185000U (en) | stereo wide circuit | |
| JPS6066178U (en) | color television receiver | |
| JPS6022043U (en) | Intermediate frequency band switching circuit | |
| JPS5956577U (en) | Generated signal detection device | |
| JPS58507U (en) | amplifier circuit | |
| JPS6090942U (en) | Automatic band switching circuit | |
| JPS6017042U (en) | IF band automatic switching circuit | |
| JPS60112134U (en) | FM receiver | |
| JPS60192158U (en) | PCM recording and playback device | |
| JPS6032852U (en) | FSK method demodulator | |
| JPS615082U (en) | Color signal separation circuit | |
| JPS5871239U (en) | tone squelch circuit | |
| JPS5826721U (en) | signal switching device | |
| JPH03115984U (en) | ||
| JPS58123622U (en) | delay line | |
| JPS59106276U (en) | Video signal measuring device | |
| JPS5920420U (en) | noise canceller | |
| JPS6040121U (en) | equalizer device | |
| JPS5827777U (en) | Delay time measurement circuit | |
| JPS59161779U (en) | comb filter device | |
| JPS58147329U (en) | Tuning display circuit in radio receiver | |
| JPS60107999U (en) | sound effects equipment | |
| JPS5837241U (en) | squelch circuit |