GB1145139A - - Google Patents
Info
- Publication number
- GB1145139A GB1145139A GB5084567A GB5084567A GB1145139A GB 1145139 A GB1145139 A GB 1145139A GB 5084567 A GB5084567 A GB 5084567A GB 5084567 A GB5084567 A GB 5084567A GB 1145139 A GB1145139 A GB 1145139A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- meter
- capacitor
- sparking
- oscillator
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/58—Testing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
1,145,139. Testing sparking plugs. T. NAKAGAWA. Nov. 8, 1967 [Nov. 14, 1966; Sept. 13, 1967], No.50845/67. Heading G1U. In measuring the gap 6 of a sparking plug 5 a high D. C. voltage is fed to a capacitor 18 in parallel with the sparking plug and the average value of the pulsating voltage produced across the capacitor by the sparking of the plug gives an indication of the gap length. The average value of the voltage is measured by a meter 7 and the high D. C. voltage is obtained from a rectifier 17 supplied by a high frequency oscillator and transformer 9,11,12,13. In a modification, Fig. 3 (not shown), the transistors 22, 25 feeding the meter 7 are omitted, the valve rectifier 17 is replaced by a capacitor semi-conductor voltage doubler, and the meter 7, shunted by a thermistor (39) to compensate for ambient temperature variations is connected in series with a resistor (38) across the terminal of capacitor 18. The voltage supply to the h. f. oscillator may be measured by closing switches (8 2 , 37 2 ) which connect the meter 7 in series with a resistor (41) across the terminals (1, 2) on the input side of the oscillator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10456066 | 1966-11-14 | ||
| JP7789067 | 1967-09-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1145139A true GB1145139A (en) | 1969-03-12 |
Family
ID=26418936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5084567A Expired GB1145139A (en) | 1966-11-14 | 1967-11-08 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1539243A1 (en) |
| GB (1) | GB1145139A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4156839A (en) * | 1977-11-14 | 1979-05-29 | Torakichi Nakagawa | Spark plug tester |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2550790B2 (en) * | 1991-03-18 | 1996-11-06 | 日本電装株式会社 | Insulator insulator defect detection apparatus and defect detection method |
-
1967
- 1967-11-08 GB GB5084567A patent/GB1145139A/en not_active Expired
- 1967-11-14 DE DE19671539243 patent/DE1539243A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4156839A (en) * | 1977-11-14 | 1979-05-29 | Torakichi Nakagawa | Spark plug tester |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1539243A1 (en) | 1970-02-26 |
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