MD629Y - Ohmmeter - Google Patents
OhmmeterInfo
- Publication number
- MD629Y MD629Y MDS20120177A MD629Y MD 629 Y MD629 Y MD 629Y MD S20120177 A MDS20120177 A MD S20120177A MD 629 Y MD629 Y MD 629Y
- Authority
- MD
- Moldova
- Prior art keywords
- input
- terminal
- output
- converter
- resistance
- Prior art date
Links
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention relates to the measurement technique and can be used for high-precision measurement of resistance.The ohmmeter contains two terminals (3, 4) for connection of the measured object, a resistor (2) having one pole connected to the first terminal (3), a constant-current source (1), to one terminal of which is connected the second pole of the resistor (2), a converter of negative resistance (5) with an input for controlling the reproduced resistance, a control input and two outputs, one of which is connected to the second terminal (4) and the second input - to the second terminal of the current source (1), a voltage comparator (6), having one input connected to the first terminal (3), and the second input - to the common point of the converter (5) and the current source (1). The ohmmeter also contains a counting pulse generator with stable frequency (7), an AND gate (8) with one output and two inputs, one of which is connected to the output of the comparator (6), and the second input - to the output of the generator (7), a digital indication unit (9), having its input connected to the output of the AND gate (8) and to the control input of the converter (5). The control input of the converter (5) is digital, and control of reproducible resistance is obtained by means of counting pulses from the output of the AND gate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDS20120177A MD629Z (en) | 2012-12-14 | 2012-12-14 | Ohmmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MDS20120177A MD629Z (en) | 2012-12-14 | 2012-12-14 | Ohmmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MD629Y true MD629Y (en) | 2013-04-30 |
| MD629Z MD629Z (en) | 2013-11-30 |
Family
ID=48227618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MDS20120177A MD629Z (en) | 2012-12-14 | 2012-12-14 | Ohmmeter |
Country Status (1)
| Country | Link |
|---|---|
| MD (1) | MD629Z (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MD2248C2 (en) * | 2001-12-14 | 2004-02-29 | Виталие НАСТАС | Device for impedance components measurement |
| MD2463G2 (en) * | 2003-10-16 | 2004-12-31 | Технический университет Молдовы | Device for measuring the impedance components |
| MD2645G2 (en) * | 2004-07-16 | 2005-08-31 | Технический университет Молдовы | Device for measuring the linear resistance of the insulated wire |
| MD2866G2 (en) * | 2004-12-17 | 2006-05-31 | Технический университет Молдовы | Impedance meter |
| MD3216G2 (en) * | 2006-03-21 | 2007-07-31 | Технический университет Молдовы | Device for measuring the linear resistance of the insulated wire |
| MD279Z (en) * | 2010-03-26 | 2011-04-30 | Технический университет Молдовы | Impedance meter |
| MD590Z (en) * | 2011-11-08 | 2013-08-31 | Технический университет Молдовы | Ohmmeter |
-
2012
- 2012-12-14 MD MDS20120177A patent/MD629Z/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| MD629Z (en) | 2013-11-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG9Y | Short term patent issued | ||
| KA4Y | Short-term patent lapsed due to non-payment of fees (with right of restoration) |