JPS6155223U - - Google Patents
Info
- Publication number
- JPS6155223U JPS6155223U JP14052284U JP14052284U JPS6155223U JP S6155223 U JPS6155223 U JP S6155223U JP 14052284 U JP14052284 U JP 14052284U JP 14052284 U JP14052284 U JP 14052284U JP S6155223 U JPS6155223 U JP S6155223U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- microphone
- bias
- motor
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 4
Description
図示した回路は、本考案の制御回路の一実施例
である。
主な図番の説明、１…マイクロフオン、２…前
置増幅回路、３…録音用増幅回路、５…録音ヘツ
ド、６…バイアス発振回路、８…発振用トランジ
スター、１２…信号検出回路、１５…電動機、１
６…電動機駆動回路、１７…電源供給用トランジ
スター、１８…第１制御トランジスター、２１…
第２制御トランジスター。
The illustrated circuit is one embodiment of the control circuit of the present invention. Explanation of main drawing numbers, 1... Microphone, 2... Preamplifier circuit, 3... Recording amplifier circuit, 5... Recording head, 6 ... Bias oscillation circuit, 8... Oscillation transistor, 12... Signal detection circuit, 15 ...Electric motor, 1
6... Motor drive circuit, 17... Power supply transistor, 18... First control transistor, 21...
Second control transistor.
Claims (1)
と共に該信号を増幅する前置増幅回路と、録音動
作時録音ヘツドにバイアス電流を供給するバイア
ス発振回路と、磁気テープを走行駆動せしめる電
動機を回転駆動せしめる電動機駆動回路と、前記
前置増幅回路により増幅された信号が印加される
と共に信号の有・無を検出する信号検出回路とよ
り成り、前記マイクロフオンからの信号があると
き前記信号検出回路の出力信号により前記電動機
駆動回路及びバイアス発振回路を動作状態にせし
め、マイクロフオンからの信号が無いとき前記信
号検出回路の出力信号により前記電動機駆動回路
及びバイアス発振回路を不動作状態にせしめるよ
うにしたことを特徴とするテープレコーダーの制
御回路。 A preamplifier circuit receives a signal obtained from the microphone and amplifies the signal; a bias oscillator circuit supplies a bias current to the recording head during recording operation; and a motor rotates the motor that drives the magnetic tape. It consists of a drive circuit and a signal detection circuit to which the signal amplified by the preamplifier circuit is applied and detects the presence or absence of the signal, and when there is a signal from the microphone, the output signal of the signal detection circuit is The motor drive circuit and the bias oscillation circuit are put into an operating state, and when there is no signal from the microphone, the output signal of the signal detection circuit is used to put the motor drive circuit and the bias oscillation circuit into a non-operation state. Features a tape recorder control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14052284U JPS6155223U (en) | 1984-09-17 | 1984-09-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14052284U JPS6155223U (en) | 1984-09-17 | 1984-09-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6155223U true JPS6155223U (en) | 1986-04-14 |
Family
ID=30698877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14052284U Pending JPS6155223U (en) | 1984-09-17 | 1984-09-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6155223U (en) |
-
1984
- 1984-09-17 JP JP14052284U patent/JPS6155223U/ja active Pending
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