GB1284517A - Timing light control circuit - Google Patents
Timing light control circuitInfo
- Publication number
- GB1284517A GB1284517A GB26434/71A GB2643471A GB1284517A GB 1284517 A GB1284517 A GB 1284517A GB 26434/71 A GB26434/71 A GB 26434/71A GB 2643471 A GB2643471 A GB 2643471A GB 1284517 A GB1284517 A GB 1284517A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulse
- transistor
- capacitor
- blocks
- potential
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
- F02P17/02—Checking or adjusting ignition timing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
- F02P17/02—Checking or adjusting ignition timing
- F02P17/04—Checking or adjusting ignition timing dynamically
- F02P17/06—Checking or adjusting ignition timing dynamically using a stroboscopic lamp
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Electrical Control Of Ignition Timing (AREA)
- Control Of Eletrric Generators (AREA)
- Pulse Circuits (AREA)
Abstract
1284517 Transistor pulse circuits INTERNATIONAL BUSINESS MACHINES CORP 19 April 1971 [30 April 1970] 26434/71 Heading H3T [Also in Division G1] Pulse shapes.-A pulse train from the breaker contacts 10 (Fig. 3) of an I.C. engine is fed through a unit 24, comprising a filter 100 (Fig. 5) and a multivibrator having a normally blocked transistor 95 which is opened by each input pulse to produce a negative output pulse 105 on line 92. The output pulse duration is determined by the time taken for capacitor 104 to charge to a potential which opens transistor 108 and blocks transistor 95, and is made to coincide with the input pulse duration. Delay circuits.-A potential on line 96 (Fig. 5) controls the extension of each pulse 60 fed to a monostable multivibrator comprising transistors 41, 45. The input potential charges capacitor 31. Each pulse 60 blocks diode 34, opens transistor 41 and blocks transistor 45, to start the output pulse 61. Capacitor 31 discharges through transistor 50 at a rate determined by manually adjustable bias potential applied on line 26. When the capacitor potential applied is sufficiently low, diode 144 conducts and opens transistor 45 to end the output pulse 61. The leading edge of pulse 61 on lead 68 (Fig. 4) opens transistor 71 to produce a negative pulse at 84 which is blocked by diode 75. The trailing edge blocks transistor 71 to produce a positive pulse which is amplified at 78, 80 to form output pulse 62.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US3346770A | 1970-04-30 | 1970-04-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1284517A true GB1284517A (en) | 1972-08-09 |
Family
ID=21870575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB26434/71A Expired GB1284517A (en) | 1970-04-30 | 1971-04-19 | Timing light control circuit |
Country Status (6)
Country | Link |
---|---|
US (1) | US3727124A (en) |
JP (1) | JPS548810B1 (en) |
CA (1) | CA939003A (en) |
DE (1) | DE2120684A1 (en) |
FR (1) | FR2092461A5 (en) |
GB (1) | GB1284517A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2522170C2 (en) * | 1975-05-17 | 1985-04-25 | Robert Bosch Gmbh, 7000 Stuttgart | Device for determining or checking the ignition advance angle in ignition systems of internal combustion engines |
DE2531517A1 (en) * | 1975-07-15 | 1977-02-03 | Bosch Gmbh Robert | DEVICE FOR DETECTING A MARK ON A ROTATING BODY |
US4063152A (en) * | 1976-08-16 | 1977-12-13 | Beckman Instruments, Inc. | Method and apparatus for timing light calibration |
NL7708164A (en) * | 1976-08-16 | 1978-02-20 | Beckman Instruments Inc | DEVICE FOR CALIBRATION OF AN ENGINE BEHAVIOR TESTER. |
US4395680A (en) * | 1980-12-29 | 1983-07-26 | Sun Electric Corporation | Automobile timing light |
US4965494A (en) * | 1985-10-21 | 1990-10-23 | Snap-On Tools Corporation | Capacitor charging circuit for timing light power source |
US4746210A (en) * | 1985-12-23 | 1988-05-24 | Shell Oil Company | Centrifuge strobe method and circuit |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2785215A (en) * | 1952-04-29 | 1957-03-12 | Sun Oil Co | Electronic timing circuit |
GB945240A (en) * | 1960-11-08 | 1963-12-23 | Exxon Research Engineering Co | Electronic ignition spark timer |
US3499322A (en) * | 1968-04-29 | 1970-03-10 | Autoscan Inc | Analyzing device for automotive engine |
US3603879A (en) * | 1970-05-15 | 1971-09-07 | Autoscan Inc | Apparatus for measuring the frequency of occurence of ignition signals in a multicylinder engine |
-
1970
- 1970-04-30 US US00033467A patent/US3727124A/en not_active Expired - Lifetime
-
1971
- 1971-03-11 FR FR7110261A patent/FR2092461A5/fr not_active Expired
- 1971-03-30 CA CA109037A patent/CA939003A/en not_active Expired
- 1971-03-30 JP JP1844271A patent/JPS548810B1/ja active Pending
- 1971-04-19 GB GB26434/71A patent/GB1284517A/en not_active Expired
- 1971-04-27 DE DE19712120684 patent/DE2120684A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CA939003A (en) | 1973-12-25 |
JPS548810B1 (en) | 1979-04-19 |
US3727124A (en) | 1973-04-10 |
DE2120684A1 (en) | 1971-11-11 |
FR2092461A5 (en) | 1972-01-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |