GB1522377A - Device for measuring and checking parameters of electric circuit elements - Google Patents
Device for measuring and checking parameters of electric circuit elementsInfo
- Publication number
- GB1522377A GB1522377A GB3421975A GB3421975A GB1522377A GB 1522377 A GB1522377 A GB 1522377A GB 3421975 A GB3421975 A GB 3421975A GB 3421975 A GB3421975 A GB 3421975A GB 1522377 A GB1522377 A GB 1522377A
- Authority
- GB
- United Kingdom
- Prior art keywords
- measuring
- electric circuit
- circuit elements
- transistor
- earth
- 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
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
- G01R31/2825—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere in household appliances or professional audio/video equipment
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
- Tests Of Electronic Circuits (AREA)
- Manipulation Of Pulses (AREA)
Abstract
1522377 In-circuit testing S V UGOLNIKOV S P KOSACH V D KAPLUN V I ZHITNIK and A Y BULGAKOV 18 Aug 1975 34219/75 In-circuit testing of a three-terminal component, such as a transistor 10, Fig. 1, is effected by using operational amplifiers such as 17, 19, 21, 24, to clamp various points to earth and thereby prevent any interactions. As shown a negative potential from a source 1 is applied to the emitter of transistor 10 and its base and collector are clamped to earth by amplifiers 17 and 19 respectively. The amplifier output voltages then represent the base and collector currents, which can either be read from meters 28 and 29, or whose ratio can be determined by an arrangement 33.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3421975A GB1522377A (en) | 1975-08-18 | 1975-08-18 | Device for measuring and checking parameters of electric circuit elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3421975A GB1522377A (en) | 1975-08-18 | 1975-08-18 | Device for measuring and checking parameters of electric circuit elements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1522377A true GB1522377A (en) | 1978-08-23 |
Family
ID=10362886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3421975A Expired GB1522377A (en) | 1975-08-18 | 1975-08-18 | Device for measuring and checking parameters of electric circuit elements |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1522377A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426666A (en) * | 2019-09-05 | 2019-11-08 | 河南省计量科学研究院 | Insulation resistance meter calibration system |
-
1975
- 1975-08-18 GB GB3421975A patent/GB1522377A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426666A (en) * | 2019-09-05 | 2019-11-08 | 河南省计量科学研究院 | Insulation resistance meter calibration system |
| CN110426666B (en) * | 2019-09-05 | 2024-04-26 | 河南省计量测试科学研究院 | Insulation resistance meter calibration system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |