CN2217784Y - Standard distortion coefficient compositing device - Google Patents
Standard distortion coefficient compositing device Download PDFInfo
- Publication number
- CN2217784Y CN2217784Y CN 94219640 CN94219640U CN2217784Y CN 2217784 Y CN2217784 Y CN 2217784Y CN 94219640 CN94219640 CN 94219640 CN 94219640 U CN94219640 U CN 94219640U CN 2217784 Y CN2217784 Y CN 2217784Y
- Authority
- CN
- China
- Prior art keywords
- signal source
- fundamental signal
- distortion coefficient
- piece circuit
- compositor
- 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 - Fee Related
Links
Images
Landscapes
- Networks Using Active Elements (AREA)
Abstract
The utility model relates to a standard distortion coefficient synthesizing device of a distortion meter calibrating device, which is composed of a block circuit and a function selecting switch, wherein the block circuit adopts passive non-inductive resistor linear elements R1, R2, R3, R4, R5 to cause a standard distortion coefficient obtained by the linear synthesis of the amplitude of a fundamental wave signal source and the amplitude of a harmonic signal source through coupling conjugation not to change along with the change of the frequency of the harmonic signal, and thus the synthesis of a standard distortion coefficient with low distortion and wide measuring range is realized. The utility model also has the advantages of few used elements, small volume, light weight, simple fabrication and processing, convenient technique adjustment, favorable consistency and high stability.
Description
The utility model relates to a kind of standard distortion coefficient compositor, i.e. standard distortion coefficient compositor in the anamorphoser calibrating installation.
The circuit structure that present China is used for the standard distortion coefficient compositor employing of anamorphoser calibrating installation has operational amplifier (active device), or adopt transformer coupled to the resistance bridge stack (thoughts device) wait some nonlinear devices to constitute, the standard distortion coefficient compositor that is made of nonlinear device has hindered the broadening of its harmonic band, only can realize 2 subharmonic f to first-harmonic f=5Hz-200KHz
2=10Hz-400KHz, standard distortion coefficient D=0.003%-100% range synthetic, and for overtone order n＞2, high order n=3-10 more, the standard distortion coefficient of 400KHz-1MHz harmonic frequency is synthetic can not realize that therefore, the harmonic band scope of anamorphoser calibrating installation is narrower.
The purpose of this utility model is to provide a kind of value scope that can enlarge the anamorphoser pick-up unit, and a kind of low distortion promptly is provided, wide-range, wide band standard distortion coefficient compositor.
The purpose of this utility model is achieved in that standard distortion coefficient compositor is by piece circuit and functional select switch K
1, K
2Constitute, its piece circuit is to adopt passive, noninductive resistance linear unit R
1, R
2, R
3, R
4, R
5Connect by coupling, with fundamental signal source F, amplitude E
1With harmonic wave signal source F
nAmplitude E
nLinear is synthesized together, and the standard distortion coefficient of acquisition will be with F
nThe variation of frequency and changing, thus realized F
nSynthesizing of wide band standard distortion coefficient.
The utility model is noninductive, passive owing to having adopted, resistance is linear, fundamental synthetic standards percentage distortion technology, influence distortion to harmonic signal, fundamental signal is little, easily realize the harmonic band broadening, can obtain the standard distortion coefficient of low distortion, wide-range, it is few to adopt the standard distortion coefficient compositor of this structure to have an appliance, volume is little, in light weight, it is simple to manufacture processing, the easy and stable height of high conformity of adjusting process, advantage such as the cost cost is low.
Provide further instruction below in conjunction with the drawings and specific embodiments.
Fig. 1: the circuit structure diagram of standard distortion coefficient compositor
Fig. 2: standard distortion coefficient compositor closure panel plane figure.
Wherein: X piece circuit Y functional select switch; R
1, R
2Potentiometer; R
3, R
4, R
5Resistance;
F
4: in connect the fundamental signal source; F '
1: external fundamental signal source; F
n: the harmonic signal source;
A: ground terminal; B: external fundamental signal input terminal; C: in connect fundamental signal input
Terminal; D: piece circuit X lead-out terminal; E: harmonic signal input terminal; F: first-harmonic (F
1
Or F '
1) voltage E, harmonic wave (F
n) lead-out terminal of voltage or standard distortion coefficient; B: quilt
Measuring instrument; E
1, V: the switch normality; E
n, D: the switch closed state
As shown in Figure 1, the typical coefficient compositor is to be made of piece circuit (X) and switch (Y) two parts, and its piece circuit (X) is by potentiometer (R
1), (R
2), resistance (R
3), (R
4), (R
5) form (R
2) an end and (R
1) an end connect and to be connected (R with lead-out terminal (d) jointly
2) the other end and external fundamental signal source (F '
1) input end (b) be connected R
1The other end and R
4Polyphone, R
4The other end and R
3, R
5Link to each other R
3Other end ground connection, R
5The other end with in meet fundamental signal source (F
1) input end (c) be connected potentiometer (R wherein
1), (R
2) resistance be 220 Ω, resistance (R
3), (R
4), (R
5) resistance be respectively 22K Ω, 390 Ω, 200 Ω.Switch (Y) is by key (K
1) and key (K
2) form its (K
1) end of key is connected with detected instrument (B), the other end can according to detect required respectively with the normality (E that links to each other with the lead-out terminal (d) of piece circuit
1) or the close point E that links to each other with the output terminal (e) of harmonic wave signal source
nLink to each other K
2One end of key and harmonic signal source output terminal (E
n) fixedly connected, the other end can according to detect required respectively with normality (V), close state (D) and link to each other.As key K
2When normality (V) state, from key K
1The state of setting can obtain fundamental signal source (F
1Or F '
1), harmonic signal source (F
n) electromotive force (E
1), (E '
1), (E
n), K
2When closing state (D), can obtain F by output terminal (f)
1, F
nSynthetic standard distortion coefficient offers the tested anamorphoser B of calibrating and uses.
Reveal on closure surface as shown in Figure 2 has on the piece circuit and fundamental signal source (F
1), (F '
1) the continuous potentiometer (R that is used for regulating its signal source internal resistance
1), (R
2), the input terminal (b) in the external fundamental signal of the ground terminal of piece circuit (a) source, in connect the input terminal (c) in fundamental signal source, external fundamental signal source or in connect the lead-out terminal (d) of fundamental signal source signal amplitude from the piece circuit.On ﹠ off switch K
1, K
2Be individually fixed on the panel of anamorphoser pick-up unit, the piece circuit is fixed in the casing of anamorphoser pick-up unit.
Claims (3)
1, a kind of standard distortion coefficient compositor, it and precision signal generator connect the fundamental signal source promptly, the ultra-low-distortion signal source is external fundamental signal source, the fixed ampllitude signal generator is that the anamorphoser calibrating installation is formed in the harmonic signal source jointly, the feature of this compositor, be that it is to be made of piece circuit X, functional select switch Y in closure, the shell, wherein the piece circuit is by potentiometer R
1, R
2, resistance R
3, R
4, R
5Form R
2An end and R
1An end connect and be connected R with lead-out terminal d jointly
2The other end be connected R with the output terminal c in external fundamental signal source
1The other end and R
4Polyphone, R
4The other end and R
3, R
5Be connected R
3Other end ground connection, R
5The other end link to each other with the interior output terminal that connects the fundamental signal source.
2, standard distortion coefficient compositor according to claim 1 is characterized in that described functional select switch Y is by key K
1, K
2Constitute its K
1One end of key is connected with detected instrument, the other end can according to detect required respectively with the E that links to each other with the lead-out terminal d of fundamental signal source from the piece circuit
1Or the continuous E of the output terminal e in harmonic signal source
nLink to each other K
2One end and the E of key
nFixedly connected, the other end can according to detect required respectively with open state (V), close state (D) and link to each other.
3, standard distortion coefficient compositor according to claim 1 is characterized in that described closure appearance is showed to be connected with the fundamental signal source on the piece circuit, is used for regulating the potentiometer R of its signal source internal resistance
1, R
2, the ground terminal a of piece circuit meets the input terminal c in fundamental signal source in the input terminal b in external fundamental signal source, external fundamental signal source or in meet the lead-out terminal d of fundamental signal source signal amplitude from the piece circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94219640 CN2217784Y (en) | 1994-08-31 | 1994-08-31 | Standard distortion coefficient compositing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94219640 CN2217784Y (en) | 1994-08-31 | 1994-08-31 | Standard distortion coefficient compositing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2217784Y true CN2217784Y (en) | 1996-01-17 |
Family
ID=33834447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94219640 Expired - Fee Related CN2217784Y (en) | 1994-08-31 | 1994-08-31 | Standard distortion coefficient compositing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2217784Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106461596A (en) * | 2014-06-10 | 2017-02-22 | 生命扫描苏格兰有限公司 | Hand-held test meter with low-distortion signal generation circuit block |
| CN111505376A (en) * | 2020-04-29 | 2020-08-07 | 西安微电子技术研究所 | Device and method for generating standard nonlinear distortion degree |
-
1994
- 1994-08-31 CN CN 94219640 patent/CN2217784Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106461596A (en) * | 2014-06-10 | 2017-02-22 | 生命扫描苏格兰有限公司 | Hand-held test meter with low-distortion signal generation circuit block |
| CN106461596B (en) * | 2014-06-10 | 2019-05-17 | 生命扫描苏格兰有限公司 | Manual testing device with low distortion signal generating circuit block |
| CN111505376A (en) * | 2020-04-29 | 2020-08-07 | 西安微电子技术研究所 | Device and method for generating standard nonlinear distortion degree |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU3617899A (en) | A current measuring device | |
| CN201966889U (en) | Integrator for optimizing frequency response characteristic of intruding wave recording device of transformer substation | |
| CN2217784Y (en) | Standard distortion coefficient compositing device | |
| JPH03172014A (en) | Active filter | |
| KR100197032B1 (en) | Pulse generating power output hot wire type air flowmeter | |
| CN2267464Y (en) | Current sensing device used for current measuring sampling | |
| CN205982612U (en) | On --spot parameter record appearance of electric energy meter | |
| CN206178518U (en) | Programme -controlled three -phase power current source | |
| CN2385339Y (en) | Magnetic balancing current sensor for current measuring sampling | |
| CN208795797U (en) | A kind of harmonic measuring device | |
| CN208537505U (en) | A kind of micro- station sensor of air | |
| CN206759394U (en) | Electrical oscillation circuit | |
| CN201654135U (en) | Transformer LC detector | |
| CN2810036Y (en) | Low-voltage phase-locked loop (PLL) wireless audio receiver | |
| CN221261554U (en) | Control circuit for switching voltage and current modes of data acquisition equipment | |
| CN211857325U (en) | Voltage-controlled resistance circuit | |
| CN2269626Y (en) | Analog series mode interference and common mode interference signalling instrument | |
| CN201893772U (en) | Pulse width modulator circuit | |
| CN104538136B (en) | Numerical control rheostat | |
| CN2080664U (en) | High-steady pressure transducer | |
| CN2165415Y (en) | Sensor | |
| CN208834132U (en) | A kind of High-Speed Signal-Generator based on FPGA | |
| JPH028425Y2 (en) | ||
| CN213023535U (en) | Calibration device for capacity tester based on standard phase | |
| CN2459643Y (en) | Single output process card for digital torsion sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |