JPS5618735A - Detecting method for tape tension - Google Patents
Detecting method for tape tensionInfo
- Publication number
- JPS5618735A JPS5618735A JP9437879A JP9437879A JPS5618735A JP S5618735 A JPS5618735 A JP S5618735A JP 9437879 A JP9437879 A JP 9437879A JP 9437879 A JP9437879 A JP 9437879A JP S5618735 A JPS5618735 A JP S5618735A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic tape
- motor
- loaded
- circuit
- vref
- 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.)
- Granted
Links
Abstract
PURPOSE: To permit an electronic means to detect that a magnetic tape has been loaded on a machine reel by monitoring the terminal voltage of the reel motor in order to detect whether a tension is applied to the magnetic tape or not.
CONSTITUTION: Until a magnetic tape is loaded on a machine reel a transistor 10 is turned ON or OFF according to the output 1 or 0 from an AND circuit 18, so that a file motor 11 repeats revolution and stop. The terminal voltage of a capacitor 14 increases when the motor 11 rotates, and decreases when the motor 11 stops. A comparison circuit 15 outputs -V0 when the input voltage is Vref (reference voltage)+V0, and +V0 when the input voltage is Vref-V0, and so the circuit 18 outputs a 1. When the magnetic tape is loaded on the machine reel, the motor 11 receiving tension through the magnetic tape increases the number of revolution. Consequently, the terminal voltage of the capacitor 14 no longer agrees with Vref- V0, and so the circuit 18 no longer output 1. Detection thereof this permits the detection of the fact whether the magnetic tape has been loaded or not.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54094378A JPS6034176B2 (en) | 1979-07-24 | 1979-07-24 | Automatic tape attachment detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54094378A JPS6034176B2 (en) | 1979-07-24 | 1979-07-24 | Automatic tape attachment detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5618735A true JPS5618735A (en) | 1981-02-21 |
JPS6034176B2 JPS6034176B2 (en) | 1985-08-07 |
Family
ID=14108646
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54094378A Expired JPS6034176B2 (en) | 1979-07-24 | 1979-07-24 | Automatic tape attachment detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6034176B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6135979U (en) * | 1984-07-31 | 1986-03-05 | 東陶機器株式会社 | Drain valve for flushing toilet bowl |
-
1979
- 1979-07-24 JP JP54094378A patent/JPS6034176B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6135979U (en) * | 1984-07-31 | 1986-03-05 | 東陶機器株式会社 | Drain valve for flushing toilet bowl |
Also Published As
Publication number | Publication date |
---|---|
JPS6034176B2 (en) | 1985-08-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5618735A (en) | Detecting method for tape tension | |
JPS5653484A (en) | Detecting device for integrated time | |
JPS5662218A (en) | Photographing apparatus | |
JPS54145118A (en) | Winding quantity measuring system of magnetic tape | |
JPS5235607A (en) | Tape feeding device free from irregular winding | |
JPS6473464A (en) | Automatic editing device of logical circuit | |
JPS54128715A (en) | Magnetic recording and reproducing apparatus | |
JPS563447A (en) | Tape recorder | |
JPS54113307A (en) | Rotating condition detector | |
JPS5288010A (en) | Recording level setting apparatus for fm signal | |
JPS5785043A (en) | Film feed circuit | |
JPS5282875A (en) | Alarm-including charging apparatus for emergency lamps | |
JPS5228305A (en) | Tune end detector of tape recorder | |
JPS55125550A (en) | Terminal detecting system of tape recorder | |
JPS5210720A (en) | Tape residue notification device | |
JPS5313912A (en) | Magnetic tape copying device | |
JPS55130535A (en) | Exposure lamp control circuit of copying apparatus | |
JPS5562568A (en) | Magnetic recording and reproducing device | |
JPS51143377A (en) | Electronic fare indicator | |
JPS51144977A (en) | Traverse and inverse method and its device in taking in wires | |
JPS55157040A (en) | Failure recognition method for information processor | |
JPS54128306A (en) | No signal part detecting device of magnetic tape | |
JPS5590863A (en) | Device for measuring grounding resistance | |
JPS5499610A (en) | Magnetic memory processing apparatus | |
JPS5456804A (en) | Auto reverse device of tape recorders |