On the basis of analyzing the common methods of background magnetic field compensation,a new automatic compensation method based on sample and hold circuit is put forward.

在分析磁通門常用背景磁場補(bǔ)償方法基礎(chǔ)上国产欧美精品久久，提出一種新的采樣保持電路自動補(bǔ)償方法。

Sample and hold circuit ; fluxgate ; background magnetic ; geomagnetic field ; compensation

采樣保持電路；磁通門；背景磁場欧美视频二区网站；地磁場；補(bǔ)償

The sensor is made up of original circuit, magnetic core, Hall part, secondary coil and magnifier. There are two work modes: direct measure mode and closed-loop mode.

其結(jié)構(gòu)由原邊電路欧美喷水大屁股、聚磁環(huán)18禁止黄片、霍爾器件、次級線圈和放大電路等組成大陆视频国产精品短视频，分直測式和磁補(bǔ)償式兩種工作方式黄片干净无码A片。

A grid, a filter, a graticule, a mesh, a light chopper disc, a heat sink plate, a heater element, a screen, colour TV mask, a diaphragm, a shim, a gasket, a washer, a spring, a link, a probe, a magnetic recording head, a circuit lead frame, an encoder disc, an item of jewelry, a rule, a scale, a clutch plate, an emitter contact, a micro reactor, a suspension lead, an ink jet nozzle plate, a stencil, a razor foil, a bearing, an edge filter, a logo, a nameplate, a decorative plaque, an instrument case, a box, an enclosure and a potentiometer case having a chemically etched surface pattern or design made by a process as claimed in.

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Xamples of specific articles are a grid, a filter, a graticule, a mesh, a light chopper disc, a heat sink plate, a heater element, a screen, colour TV mask, a diaphragm, a shim, a gasket, a washer, a spring, a cog, a link, a probe, a magnetic recording head, a circuit lead frame, an encoder disc, an item of jewelry, a rule, a scale, a clutch plate, an emitter contact, a micro reactor, a suspension lead, an ink jet nozzle plate, a stencil, a razor foil, a bearing, an edge filter, a logo, a nameplate, a decorative plaque, an instrument case, a box, an enclosure and a potentiometer case made by the process of the present invention.

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The theoretical analysis and simulation results of 1kW 40~60VDC/380VDC full-bridge Boost mode two-input DC-DC converter have shown that the converter has the advantages such as double isolation among multiple input sources and between output and input of the converter, simple topology, strong voltage matching ability, multiple input sources can supply the power simultaneously or individually, small input current ripple, high power density, high conversion efficiency, high reliability at short circuit, magnetic flux of high-frequency transformer easy to add up etc.

1kW 40～60VDC/380VDC全橋Boost型雙輸入直流變換器的理論分析和仿真結(jié)果表明无码秒播成人影视网站大全免费，這種變換器具有多路輸入源之間以及輸出與輸入源之間雙隔離人人人人操人人干、電路拓?fù)浜啙崱㈦妷浩ヅ淠芰?qiáng)人人操人人干人人莫、多路輸入源可同時或分時供電日本超碰人人操人人摸人人干、輸入電流紋波小、功率密度高人人操人人干91、變換效率高在线观看国产对白视频网站大全下载、負(fù)載短路時可靠性高、高頻變壓器磁通易于疊加等優(yōu)點(diǎn)日本爱爱高清视频。

The coreless PCB transformer concept has not received much attention,probably because there are misunderstandings: that planar winding with a few turns printed on a PCB is almost like a 'short-circuit' and that magnetic core is an essential component in transformer construction.

無鐵心印制電路板變壓器的概念沒有受到人們很多關(guān)注欧美黄色电影网址，多半是因?yàn)榇嬖谡`解：（i平面繞組在印制電路板上只能印制幾匝，差不多像是&短路線&蝌蚪久久；在變壓器結(jié)構(gòu)中日韩精品理论片在线观看，磁心是根本的元件。

Accordingly, we design a signal collecting system that can be used to collecting microseismic wave generated by a target moving on the ground, choose and improve on the magnetic-electronic seismic sensor that has high sensitivity and can sustain high loading, and design and make pre-amplifier and conditioning circuit which need micropower, and it can work continuously not less than 7 days.

在此基礎(chǔ)上設(shè)計了運(yùn)動目標(biāo)引起的地震波的信號采集系統(tǒng)国产东北老妓女视频在线播放网站，選用靈敏度高人人操人人做人人骑人人插、抗高過載的磁電式速度傳感器，對傳感器信號調(diào)理電路進(jìn)行微功耗設(shè)計并調(diào)試淫荡的网站，制作的微功耗地震動探測系統(tǒng)能夠不間斷正常工作7天以上。

The Vistatector is a penlike device that uses electronic circuit to detect whether the magnetic particles are present on a bill -- and if so, if they are located where they should be.

展測儀是一種鋼筆形狀的儀器黄色视频在线观看官网，用電子線路查出紙幣上是否存在磁粉——如果紙幣上是有磁粉的911国产在线，那么還要看它們是否在準(zhǔn)確的部位。

TheVistatector is a penlike device that uses electronic circuit to detectwhether the magnetic particles are present on a bill -- and if so, ifthey are located where they should be.

展測儀是一種鋼筆形狀的儀器2020亚洲精品极品色在线，用電子線路查出紙幣上是否存在磁粉——如果紙幣上是有磁粉的人人射人人摸人人干，那么還要看它們是否在準(zhǔn)確的部位。