GB1424865A - Tape recording and/or reproducing apapratus - Google Patents
Tape recording and/or reproducing apapratusInfo
- Publication number
- GB1424865A GB1424865A GB395673A GB395673A GB1424865A GB 1424865 A GB1424865 A GB 1424865A GB 395673 A GB395673 A GB 395673A GB 395673 A GB395673 A GB 395673A GB 1424865 A GB1424865 A GB 1424865A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- tape
- capacitor
- transistor
- turned
- 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.)
- Expired
Links
- 239000003990 capacitor Substances 0.000 abstract 4
- 235000014676 Phragmites communis Nutrition 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/46—Controlling, regulating, or indicating speed
- G11B15/54—Controlling, regulating, or indicating speed by stroboscope; by tachometer
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/34—Indicating arrangements
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B31/00—Arrangements for the associated working of recording or reproducing apparatus with related apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
1424865 Tape recorders; detecting imminent end of tape. PIONEER ELECTRONIC CORP 25 Jan 1973 [26 Jan 1972] 3956/73 Heading G5R [Also in Division H3] An electrical device for detecting the imminent end of a tape in a tape recorder senses the increasing rotational speed of the tape supply reel and produces an output when it exceeds a predetermined value. As shown, a switch S is provided on the supply reel shaft 4 and is switched at a rate proportional to the rotational speed. The switch S may include a brush, or may be a magnetically-operated reed switch. When the switch S opens, a capacitor C3 charges towards the Zener voltage of Zener diode ZD2, but is normally prevented from reaching it by a capacitor C2, which, when switch S is next closed and transistor Tr1 is turned off, charges and reaches the Zener voltage of Zener diode ZD1 first, thus turning on transistor Tr2 and discharging capacitor C3. When the switch S is next opened, Tr1 is turned on, C2 is thus discharged and Tr2 turned off, permitting C3 to charge again. At sufficiently high switching rates, capacitor C2 never reaches Zener voltage ZD1, so that Tr2 is always off and C3 is allowed to reach Zeher voltage ZD2, thus turning on transistor Tr3. The load L may be a lamp, or a relay which actuates another tape recorder.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1111072 | 1972-01-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1424865A true GB1424865A (en) | 1976-02-11 |
Family
ID=11768855
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB395673A Expired GB1424865A (en) | 1972-01-26 | 1973-01-25 | Tape recording and/or reproducing apapratus |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2303622C3 (en) |
GB (1) | GB1424865A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2150375A (en) * | 1983-11-18 | 1985-06-26 | Brian Montandon | Distributing device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6019574B2 (en) * | 1978-02-24 | 1985-05-16 | カシオ計算機株式会社 | Tape running stop detection device |
-
1973
- 1973-01-25 GB GB395673A patent/GB1424865A/en not_active Expired
- 1973-01-25 DE DE19732303622 patent/DE2303622C3/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2150375A (en) * | 1983-11-18 | 1985-06-26 | Brian Montandon | Distributing device |
Also Published As
Publication number | Publication date |
---|---|
DE2303622C3 (en) | 1980-01-03 |
DE2303622A1 (en) | 1973-08-02 |
DE2303622B2 (en) | 1979-05-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
48R | Reference inserted (sect. 8/1949) | ||
PCNP | Patent ceased through non-payment of renewal fee |