ES446358A1 - Adjustable delay circuit particularly for a vehicle diagnostic systems - Google Patents
Adjustable delay circuit particularly for a vehicle diagnostic systemsInfo
- Publication number
- ES446358A1 ES446358A1 ES446358A ES446358A ES446358A1 ES 446358 A1 ES446358 A1 ES 446358A1 ES 446358 A ES446358 A ES 446358A ES 446358 A ES446358 A ES 446358A ES 446358 A1 ES446358 A1 ES 446358A1
- Authority
- ES
- Spain
- Prior art keywords
- capacitor
- transistor
- comparator
- voltage
- charged
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/042—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
- G01M15/044—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12 by monitoring power, e.g. by operating the engine with one of the ignitions interrupted; by using acceleration tests
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/4802—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage by using electronic circuits in general
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Pulse Circuits (AREA)
- Testing Of Engines (AREA)
Abstract
Improvements in adjustable delay circuits for vehicle diagnostic systems, more specifically to adjust the delay between a pulse input signal and the output of said circuit within two selectable delay ranges, characterized by Means for differentiating said input signal and producing a differentiated signal, A first transistor normally non-conductive, a first capacitor connected to said first transistor, a variable current source including an adjustable resistor, Means connecting said variable current source to supply current to said first transistor and said first capacitor, said first capacitor being charged by said variable current source when said first transistor is in a non-conductive state, A comparator, Means connecting said first capacitor to said comparator whereby said comparator produces a first voltage output when said capacitor is charged at a predetermined voltage, Means connecting said differential signal to said first transistor, said differential signal producing the conduction of said first transistor and the discharge of said capacitor therethrough, reducing the discharge of said capacitor the voltage in said first capacitor below said predetermined tension, whereby said comparator produces a second voltage output, said first transistor returning to its non-conductive state upon completion of said differentiated signal and allowing said first capacitor to be charged at said predetermined voltage whereby said comparator produces said first voltage output, And means for selectively connecting a second capacitor in parallel with said capacitor primer. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US56207375A | 1975-03-26 | 1975-03-26 | |
| US05/562,388 US3961239A (en) | 1975-03-26 | 1975-03-26 | Signal conditioning circuit for vehicle diagnostic system |
| US05/562,075 US3979598A (en) | 1975-03-26 | 1975-03-26 | Dual range adjustable delay circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES446358A1 true ES446358A1 (en) | 1977-12-01 |
Family
ID=27415867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES446358A Expired ES446358A1 (en) | 1975-03-26 | 1976-03-25 | Adjustable delay circuit particularly for a vehicle diagnostic systems |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS51119406A (en) |
| AU (1) | AU503574B2 (en) |
| BR (1) | BR7601811A (en) |
| DE (1) | DE2612062A1 (en) |
| DK (1) | DK123676A (en) |
| ES (1) | ES446358A1 (en) |
| FR (1) | FR2305892A1 (en) |
| GB (1) | GB1548999A (en) |
| IE (1) | IE43405B1 (en) |
| IT (1) | IT1058574B (en) |
| LU (1) | LU74647A1 (en) |
| NL (1) | NL7602772A (en) |
| SE (1) | SE422099B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3275932A (en) * | 1965-05-11 | 1966-09-27 | Kal Equip Company Inc | R.p.m. dwell angle and point resistance tester |
| US3454871A (en) * | 1968-02-19 | 1969-07-08 | Texaco Inc | Apparatus for measuring and controlling spark advance of internal combustion engine |
| US3650149A (en) * | 1969-01-21 | 1972-03-21 | Clayton Manufacturing Co | Engine ignition and power analyzer |
| US3573609A (en) * | 1969-02-27 | 1971-04-06 | American Gage & Mach | Distributor advance tester with tachometer |
| SE349361B (en) * | 1970-12-23 | 1972-09-25 | Saab Scania Ab | |
| US3768004A (en) * | 1972-01-20 | 1973-10-23 | Autech Inc | Engine timing computer |
| DE2244111A1 (en) * | 1972-09-08 | 1974-03-14 | Bosch Gmbh Robert | MEASURING DEVICE FOR VEHICLE DIAGNOSIS |
| FR2254022A1 (en) * | 1973-12-07 | 1975-07-04 | Cfea | Automatic engine tuning equipment - has all test meters contained in a single mobile unit |
-
1976
- 1976-02-27 SE SE7602656A patent/SE422099B/en unknown
- 1976-03-17 NL NL7602772A patent/NL7602772A/en not_active Application Discontinuation
- 1976-03-18 AU AU12133/76A patent/AU503574B2/en not_active Expired
- 1976-03-22 DK DK123676A patent/DK123676A/en not_active Application Discontinuation
- 1976-03-22 DE DE19762612062 patent/DE2612062A1/en not_active Withdrawn
- 1976-03-23 GB GB11615/76A patent/GB1548999A/en not_active Expired
- 1976-03-25 IE IE637/76A patent/IE43405B1/en unknown
- 1976-03-25 BR BR7601811A patent/BR7601811A/en unknown
- 1976-03-25 JP JP51032055A patent/JPS51119406A/en active Pending
- 1976-03-25 ES ES446358A patent/ES446358A1/en not_active Expired
- 1976-03-25 FR FR7608630A patent/FR2305892A1/en active Pending
- 1976-03-26 LU LU74647A patent/LU74647A1/xx unknown
- 1976-03-26 IT IT21625/76A patent/IT1058574B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IE43405B1 (en) | 1981-02-25 |
| AU1213376A (en) | 1977-09-22 |
| IT1058574B (en) | 1982-05-10 |
| SE422099B (en) | 1982-02-15 |
| IE43405L (en) | 1976-09-26 |
| SE7602656L (en) | 1976-09-27 |
| DE2612062A1 (en) | 1976-12-02 |
| AU503574B2 (en) | 1979-09-13 |
| GB1548999A (en) | 1979-08-01 |
| DK123676A (en) | 1976-09-27 |
| FR2305892A1 (en) | 1976-10-22 |
| BR7601811A (en) | 1976-09-28 |
| JPS51119406A (en) | 1976-10-20 |
| LU74647A1 (en) | 1976-09-01 |
| NL7602772A (en) | 1976-09-28 |
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