JPS6031711U - Abnormal write prevention device - Google Patents
Abnormal write prevention deviceInfo
- Publication number
- JPS6031711U JPS6031711U JP12158183U JP12158183U JPS6031711U JP S6031711 U JPS6031711 U JP S6031711U JP 12158183 U JP12158183 U JP 12158183U JP 12158183 U JP12158183 U JP 12158183U JP S6031711 U JPS6031711 U JP S6031711U
- Authority
- JP
- Japan
- Prior art keywords
- power source
- prevention device
- write prevention
- abnormal write
- comparator
- 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
- Digital Magnetic Recording (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図は本考案の一実施例を示す回路図、第２図１〜４
は同実施例における各種状態のタイミングチャートであ
る。
Ｔｒ２・・・トランジスタ、ＣＭＰ・・・コンパレータ
、Ｃ１・・・コンデンサ、Ｒ６，ＺＤ・・・定電圧回路
用の抵抗及びツェナーダイオード。Fig. 1 is a circuit diagram showing one embodiment of the present invention, Fig. 2 1 to 4
are timing charts of various states in the same embodiment. Tr2...Transistor, CMP...Comparator, C1...Capacitor, R6, ZD...Resistance and Zener diode for constant voltage circuit.
Claims (1)
ッドにより情報を書込む装置において、前記第１の直流
電源に接続されたコンデンサと、前記第２の直流電源に
接続された定電圧回路と、前記第２の直流電源より給電
され前記コンデンサの電圧と前記定電圧回路の出力電圧
とを比較するコンパレータ′と、前記磁気ヘッドと直列
に接続され前記コンパレータの出力信号が制御端子に加
えられるスイッチング素子とを備えた異常書込み防止装
置。In an apparatus for writing information onto a medium using a magnetic head, the device includes a first DC power source and a second DC power source, the capacitor being connected to the first DC power source and the second DC power source being connected to the second DC power source. a constant voltage circuit, a comparator' which is powered by the second DC power supply and compares the voltage of the capacitor with the output voltage of the constant voltage circuit, and is connected in series with the magnetic head and receives the output signal of the comparator from a control terminal. and a switching element added to the abnormal write prevention device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12158183U JPS6031711U (en) | 1983-08-04 | 1983-08-04 | Abnormal write prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12158183U JPS6031711U (en) | 1983-08-04 | 1983-08-04 | Abnormal write prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6031711U true JPS6031711U (en) | 1985-03-04 |
Family
ID=30278206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12158183U Pending JPS6031711U (en) | 1983-08-04 | 1983-08-04 | Abnormal write prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6031711U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6292818U (en) * | 1985-11-21 | 1987-06-13 |
-
1983
- 1983-08-04 JP JP12158183U patent/JPS6031711U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6292818U (en) * | 1985-11-21 | 1987-06-13 | ||
| JPH0410811Y2 (en) * | 1985-11-21 | 1992-03-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6031711U (en) | Abnormal write prevention device | |
| JPS5936010U (en) | Headshot sense circuit | |
| JPS5848449U (en) | Thermal printing head protection circuit in thermal recording equipment | |
| JPS5999340U (en) | Relay drive circuit | |
| JPS58105628U (en) | interface control device | |
| JPS593609U (en) | Muting circuit | |
| JPS5848056U (en) | Motor drive circuit | |
| JPS5933540U (en) | reset circuit | |
| JPS60116501U (en) | Control signal switching circuit | |
| JPS59180529U (en) | Reset circuit for flip-flop | |
| JPS60104989U (en) | standby display device | |
| JPS6020623U (en) | DC power supply | |
| JPS5862428U (en) | Motor drive circuit | |
| JPS59191844U (en) | electronic unit | |
| JPS6071115U (en) | DC solenoid drive circuit | |
| JPS5980832U (en) | System reset circuit | |
| JPS6072039U (en) | reset circuit | |
| JPS5843616U (en) | Recording bias oscillation circuit | |
| JPS598291U (en) | chiyotsupa circuit | |
| JPS59114733U (en) | Power circuit for electronic equipment | |
| JPS5871815U (en) | Magnet constant current circuit | |
| JPS5899968U (en) | clamp circuit | |
| JPS59138151U (en) | Relay drive circuit | |
| JPS5872763U (en) | Head load/unload drive circuit | |
| JPS59142830U (en) | Power supply initialization signal generation circuit |