JPS5933346U - Earphone switching circuit - Google Patents
Earphone switching circuitInfo
- Publication number
- JPS5933346U JPS5933346U JP12997682U JP12997682U JPS5933346U JP S5933346 U JPS5933346 U JP S5933346U JP 12997682 U JP12997682 U JP 12997682U JP 12997682 U JP12997682 U JP 12997682U JP S5933346 U JPS5933346 U JP S5933346U
- Authority
- JP
- Japan
- Prior art keywords
- switching circuit
- earphone
- earphone switching
- power
- earphones
- 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
- Circuits Of Receivers In General (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゛従来のイヤホン切換回路を備えたラジオ受信
機め回路ブロック図、第２図は本考案の一実施例を示す
回路ブロック図、第３図はイヤホン−プラグとイヤホン
との接続状態の説明図、第４図は別の実施例を示す回路
ブロック図である。
１・・・チューナ回路、２・・・前置増幅器、３・・・
電力増幅器、５・・・イヤホンジャック、６・・・スピ
ーカ、７・・・電源スィッチ、８・・・電池、９・・・
イヤホン、Ｒ工・・・前置増幅器２の負荷抵抗、Ｑｌ・
・・増幅用トラシジスタ。Fig. 1 is a circuit block diagram of a radio receiver equipped with a conventional earphone switching circuit, Fig. 2 is a circuit block diagram showing an embodiment of the present invention, and Fig. 3 shows the connection state between the earphone plug and the earphone. The explanatory diagram, FIG. 4, is a circuit block diagram showing another embodiment. 1... Tuner circuit, 2... Preamplifier, 3...
Power amplifier, 5... Earphone jack, 6... Speaker, 7... Power switch, 8... Battery, 9...
Earphone, R construction...Load resistance of preamplifier 2, Ql.
...Transistor for amplification.
Claims (1)
器によりイヤホンを駆動すべく、電源ト装置増幅器及び
電力増幅器との間にイヤホンジャックを接続したイヤホ
ン切換回路。An earphone switching circuit in which an earphone jack is connected between the power supply amplifier and the power amplifier in order to cut off the power to the power amplifier when connecting the earphones and drive the earphones using the preamplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12997682U JPS5933346U (en) | 1982-08-27 | 1982-08-27 | Earphone switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12997682U JPS5933346U (en) | 1982-08-27 | 1982-08-27 | Earphone switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5933346U true JPS5933346U (en) | 1984-03-01 |
Family
ID=30294331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12997682U Pending JPS5933346U (en) | 1982-08-27 | 1982-08-27 | Earphone switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5933346U (en) |
-
1982
- 1982-08-27 JP JP12997682U patent/JPS5933346U/en active Pending
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