CN200996992Y - Corrugating fast inspecter of micro-radar medical low-voltage power supply - Google Patents

Corrugating fast inspecter of micro-radar medical low-voltage power supply Download PDF

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Publication number
CN200996992Y
CN200996992Y CN 200720010347 CN200720010347U CN200996992Y CN 200996992 Y CN200996992 Y CN 200996992Y CN 200720010347 CN200720010347 CN 200720010347 CN 200720010347 U CN200720010347 U CN 200720010347U CN 200996992 Y CN200996992 Y CN 200996992Y
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CN
China
Prior art keywords
circuit
input
power supply
ripple
voltage
Prior art date
Application number
CN 200720010347
Other languages
Chinese (zh)
Inventor
阴大兴
战成
刘微
史少阳
刘晓燕
刘岌玫
刘岌虹
战中波
邢丽娜
阴大安
阴旭光
阴宏明
刘碧玉
阴悦
陈德衡
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阴大兴
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Publication date
Application filed by 阴大兴 filed Critical 阴大兴
Priority to CN 200720010347 priority Critical patent/CN200996992Y/en
Application granted granted Critical
Publication of CN200996992Y publication Critical patent/CN200996992Y/en

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Abstract

A mini-radar examination instrument used for fast detecting the ripples of low voltage power supply in medical treatment; the examination instrument is characterized in that comprises a power supply circuit and an operating circuit. The operating circuit is powered by the power supply circuit. The power supply circuit is the completely bridge rectifying filter circuit which is connected to the input end of the power supply to be tested. The operating circuit comprises an input circuit which adopts the ripples band filter. The ripples signal outputted herefrom is connected with the signal amplification circuit so as to be delivered to the peak to peak value rectifier. The output signals hereof are connected to the comparison indicator circuit of which the norm input end of the comparator is arranged with the multi-range reference voltage and circuit via the measuring range selector switch.

Description

Micro radar medical treatment low-tension supply ripple fast detecting instrument

Technical field

The utility model relates to the power supply ripple checkout equipment of low-tension supply ripple checkout equipment, especially digital circuit and electron tube equipment.

Background technology

Contain a large amount of digital integrated circuits and single chip circuit in computing machine, various digital-control circuit, radar function circuit, communication apparatus and the Medical Devices, generally adopting voltage is low-voltage power supply voltages such as 5V, 6V, 7.5V, 9V, 10V, 12V, 24V, owing to ripple compositions such as first-harmonic that contains industrial frequency AC in the direct current of low-voltage dc power supply and second harmonic component, its existence directly has influence on the stability and the reliability of complete machine work, ripple is excessive even can burn circuit devcie, must detect power supply ripple so will find out the direct supply serviceability.Many at present employing oscillographs detection power supply ripples, but the oscillography body is big, heavy, adjusts the scale value in the measuring operation, it is all very loaded down with trivial details to read the ripple amplitude, wastes time and energy.Especially for some as radar, communication, Medical Devices universal models power supply extension set, have only voltage value and positive and negative calibrating terminal, the branch that positive-negative power is arranged during connection, oscillograph causes the power output end short circuit checkout equipment to damage easily when connecting test lead, and need line more longways is set, produce bigger measurement mushing error.

The utility model content

Goal of the invention of the present utility model is to provide the miniature quick low voltage power supply ripple detector that a kind of volume is little, easy to use, detection speed is not influenced by the positive and negative attended operation of power supply soon.The miniature quick low voltage power supply ripple detector technical scheme that the utility model provides, its major technique content is: a kind of micro radar medical treatment low-tension supply ripple fast detecting instrument, in establish feed circuit and by the operating circuit of this feed circuit power supply; Feed circuit are the full-bridge rectification filter circuit that is connected to tested power input; Operating circuit comprises that with the ripple bandpass filter be input circuit, and the ripple signal of its output is connected to signal amplification circuit and exports the peak-to-peak value wave detector to, and its output signal is connected to the comparison indicating circuit; Relatively the benchmark input end of the comparer of indicating circuit is provided with the multirange reference voltage circuit through the connection of range shelves selector switch.

In above-mentioned overall technical architecture, for suppressing the interference of common-mode noise to measuring, the both-end input amplifier circuit that its signal amplification circuit is made up of operational amplifier and its peripheral subsidiary component, cross-over connection is to two resistance feedback branches of normal phase input end and inverting input respectively by its output terminal, and the divider resistance that is parallel to this resistance feedback branch is provided with interlock multiplying power switch.

The disclosed micro radar medical treatment of the utility model low-tension supply ripple fast detecting instrument technical scheme, being primarily aimed at the direct supply voltage that is no more than 300V is tested power supply voltage signal, the technical program has been avoided high single-chip microcomputer design proposal and the difficult digital circuit mode that shows of observing of cost, avoided the meter pointer formula design proposal of damaging because of overload easily in the gear shift equally, it is single-minded to have proposed function, detection speed is fast and directly perceived, circuit structure based on operational amplifier easy to use constitutes, its circuit is formed simple, volume is small and exquisite, easy to carry, be easy to simultaneously adopt the inhibition common-mode noise is set, radiation interference, avoid connecting every technological means of short circuit, show the ripple scope that whether falls within permission by comparing indicating circuit, extremely easy to use.In addition, the technical program adopts the feed circuit of bridge rectifier circuit as operating circuit, as rectifier power source, thereby makes tested power supply ripple test need not consider electric power polarity, so use more convenient.

Description of drawings

Fig. 1 is the circuit structure block diagram of the miniature quick low voltage power supply ripple of the utility model detector

Fig. 2 is the power supply reduction voltage circuit circuit diagram that is arranged at this miniature quick low voltage power supply ripple detector input port.

Embodiment

Circuit structure block diagram as shown in Figure 1, establish feed circuit of taking from tested supply voltage in the micro radar of the present utility model medical treatment low-tension supply ripple fast detecting instrument, the fundamental purpose that these feed circuit are set is to make this detector do not obtained the restriction of tested supply voltage both positive and negative polarity, the full-bridge rectification filter circuit that these feed circuit are made of schottky diode and electric capacity, its output is always positive supply, powered operation in tested supply voltage is the 5-25V scope.Tested supply voltage for exceeding this voltage range can adopt the external connection battery feed circuit, and this battery feed circuit is to be connected to form by battery E and diode D, and its power supply exports the full-bridge rectification filter circuit input end to.The operating circuit of this detector includes bandpass filter input circuit, signal amplification circuit, peak-to-peak value wave detector and comparison indicating circuit and constitutes.For suppressing the interference of common-mode noise to measuring, its signal amplification circuit is formed a both-end input amplifier circuit by operational amplifier and its peripheral subsidiary component, tested power supply voltage signal inputs to the normal phase input end and the inverting input of both-end input amplifier respectively respectively through the bandpass filter of two-way inductance and capacitances in series formation, cross-over connection is provided with the low capacity capacitor C of higher frequency components being carried out filtering between two bandpass filter output terminals, thereby avoids the interference of signal to measuring outside the main ripple.The both-end input amplifier output terminal of signal amplification circuit cross-over connection to its normal phase input end and inverting input respectively is respectively equipped with a resistance feedback branch, and the enlargement ratio that the resistance value that be parallel on the divider resistance of this resistance feedback branch, is used to change feedback branch is adjusted this amplifying circuit is provided with interlock multiplying power switch.The connection of positive input ripple amplifying signal is provided with the positive peak wave detector, anti-phase input ripple amplifying signal connection is provided with the negative peak wave detector, the output of positive peak wave detector is connected to the normal phase input end of comparison indicating circuit, relatively the reference voltage input of the comparer in the indicating circuit is provided with the multirange reference voltage circuit that connects through range shelves selector switch, output of negative peak detector circuit and multirange reference voltage circuit stack output.The multirange reference voltage circuit is made of the resistor voltage divider circuit of constant current source and its output terminal, dividing potential drop node between each resistance is drawn each range switch end, if it is 1 o'clock that interlock multiplying power switch is connected to enlargement factor, then each measurement range selection shelves is the multirange gear of 100mV-1V; If interlock multiplying power switch select to enlargement factor be 10 o'clock, then each range gear is the range gear of 10mV-100mV.For a lot of electron tube equipment, it is mainly by 75V, 150V, 200V, the power supply of 300V supply voltage, in the present embodiment circuit as shown in Figure 2, the power supply reduction voltage circuit of many resistance series connection dividing potential drops is set at the tested supply voltage input port of this detector, the actual detected magnitude of voltage 7.5V that finally reduces to detector monitors, and feed circuit should select battery feed circuit that working power is provided simultaneously.

Claims (3)

1, a kind of micro radar medical treatment low-tension supply ripple fast detecting instrument, the operating circuit of establishing feed circuit in it is characterized in that and powering by these feed circuit; Feed circuit are the full-bridge rectification filter circuit that is connected to tested power input; Operating circuit comprises that with the ripple bandpass filter be input circuit, and the ripple signal of its output is connected to signal amplification circuit and exports the peak-to-peak value wave detector to, and its output signal is connected to the comparison indicating circuit; Relatively the benchmark input end of the comparer of indicating circuit is provided with the multirange reference voltage circuit through the connection of range shelves selector switch.
2, micro radar medical treatment low-tension supply ripple fast detecting instrument according to claim 1, it is characterized in that signal amplification circuit forms a both-end input amplifier circuit by operational amplifier and its peripheral subsidiary component, by its output terminal respectively cross-over connection to its normal phase input end and inverting input be respectively equipped with a resistance feedback branch, the divider resistance that is parallel to the resistance feedback branch is provided with interlock multiplying power switch.
3, micro radar medical treatment low-tension supply ripple fast detecting instrument according to claim 1 is characterized in that the input end of full-bridge rectification filter circuit is provided with the battery feed circuit that is connected to form by battery (E) and diode (D).
CN 200720010347 2007-01-24 2007-01-24 Corrugating fast inspecter of micro-radar medical low-voltage power supply CN200996992Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200720010347 CN200996992Y (en) 2007-01-24 2007-01-24 Corrugating fast inspecter of micro-radar medical low-voltage power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200720010347 CN200996992Y (en) 2007-01-24 2007-01-24 Corrugating fast inspecter of micro-radar medical low-voltage power supply

Publications (1)

Publication Number Publication Date
CN200996992Y true CN200996992Y (en) 2007-12-26

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CN 200720010347 CN200996992Y (en) 2007-01-24 2007-01-24 Corrugating fast inspecter of micro-radar medical low-voltage power supply

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102830296A (en) * 2011-06-16 2012-12-19 上海天祥质量技术服务有限公司 Power supply ripple interference test method and system
CN104062487A (en) * 2013-03-20 2014-09-24 鸿富锦精密工业(武汉)有限公司 Voltage detection system
CN104076188A (en) * 2013-03-29 2014-10-01 海洋王(东莞)照明科技有限公司 Alternating current detection circuit
CN104426341A (en) * 2013-09-09 2015-03-18 国基电子(上海)有限公司 Protection circuit and communication terminal equipment with protection circuit
CN104865430A (en) * 2015-05-28 2015-08-26 武汉精测电子技术股份有限公司 Automatic ripple testing device and method
CN105699756A (en) * 2016-04-25 2016-06-22 国网冀北电力有限公司电力科学研究院 Electronic load ripple detection device
CN108549039A (en) * 2018-04-13 2018-09-18 同济大学 A kind of Switching Power Supply ripple measuring circuit
CN108603919A (en) * 2015-11-30 2018-09-28 凌力尔特科技有限责任公司 Ripple monitors
CN109358297A (en) * 2018-11-07 2019-02-19 吉林大学 A kind of device and method of detector power supply system measurement

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102830296A (en) * 2011-06-16 2012-12-19 上海天祥质量技术服务有限公司 Power supply ripple interference test method and system
CN102830296B (en) * 2011-06-16 2015-11-25 上海天祥质量技术服务有限公司 Power supply ripple disturbed test method and system
CN104062487A (en) * 2013-03-20 2014-09-24 鸿富锦精密工业(武汉)有限公司 Voltage detection system
CN104062487B (en) * 2013-03-20 2016-08-24 国家电网公司 Voltage detecting system
CN104076188A (en) * 2013-03-29 2014-10-01 海洋王(东莞)照明科技有限公司 Alternating current detection circuit
CN104426341A (en) * 2013-09-09 2015-03-18 国基电子(上海)有限公司 Protection circuit and communication terminal equipment with protection circuit
CN104865430A (en) * 2015-05-28 2015-08-26 武汉精测电子技术股份有限公司 Automatic ripple testing device and method
CN104865430B (en) * 2015-05-28 2019-01-01 武汉精测电子集团股份有限公司 A kind of device and method of automatic test ripple
US10641837B2 (en) 2015-11-30 2020-05-05 Linear Technology Corporation Ripple monitoring
CN108603919A (en) * 2015-11-30 2018-09-28 凌力尔特科技有限责任公司 Ripple monitors
CN105699756A (en) * 2016-04-25 2016-06-22 国网冀北电力有限公司电力科学研究院 Electronic load ripple detection device
CN108549039A (en) * 2018-04-13 2018-09-18 同济大学 A kind of Switching Power Supply ripple measuring circuit
CN109358297A (en) * 2018-11-07 2019-02-19 吉林大学 A kind of device and method of detector power supply system measurement

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20071226

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