150-C85NBD通訊模塊

低壓整流濾波電路的原理是什么？

答：低頻脈沖直流電經(jīng)過二極管整流后，再由電解電容濾波，這樣，輸出的就是不同電壓的穩(wěn)定的電流了。由于這里電壓已經(jīng)很低了，所以盡管電容容量很大，通常有1000uf、2200uf等，但由于不需要很高的耐壓值，所以電容體積很小。

150-C85NBD通訊模塊

系統(tǒng)響應(yīng)時(shí)間過長(zhǎng)是交互式系統(tǒng)中用戶抱怨多的問題，除了響應(yīng)時(shí)間的長(zhǎng)短外，用戶對(duì)不同命令在響應(yīng)時(shí)間上的差別亦很在意，若過于懸殊用戶將難以接受；用戶求助機(jī)制宜采用集成式，避免疊加式系統(tǒng)導(dǎo)致用戶求助某項(xiàng)指南而不得不瀏覽大量無關(guān)信息；錯(cuò)誤和警告信息選用用戶明了、含義準(zhǔn)確的術(shù)語描述，同時(shí)還應(yīng)盡可能提供一些有關(guān)錯(cuò)誤恢復(fù)的建議。此外，顯示出錯(cuò)信息時(shí)，若再輔以聽覺（鈴聲）、視覺（顏色）刺激，則效果更佳；命令方式好是菜單與鍵盤命令并存，供用戶選用。

1756-RMC1輸入模塊

1756-EN2TR模擬量模塊

150-C85NBD通訊模塊

Matrox Marvel G200 agp 2x, 8mb videocard,Grafikkart 

Matrox MGI 100A/4/CPQ 4MB SCHEDA VIDEO AGP 790-01 REV. A 

Matrox Millenium P650 Low Profile PCI Dual Head P65-MDDAP64F 2x DVI + 1x VGA G24

Matrox Millenium P650 Low-Profile PCI Doppio Testa P65-MDDAP64F 2x DVI + 1x VGA 

Matrox Millenium P650 Low-Profile PCI Double Tête P65-MDDAP64F 2x DVI + 1x VGA

Matrox Millenium P650 Low-Profile PCI Dual Cabeza P65-MDDAP64F 2x DVI + 1x VGA 

MATROX MILLENIUM P650 LOW-PROFILE PCI DUAL HEAD P65-MDDAP64F 2x DVI + 1x VGA G24

MIL2P/8N MATROX MGA-2164WP-C PCI VGA 

Office Graphic Card Matrox Mga P650 PCI Low Profile Dual Head P65-MDDAP64F SFF

Passiv Ventilateur de Refroidissement Double Tête 3D Bureau Graphique 2 Monitore 

Passiv Ventilateur de Refroidissement Mga Double Tête 3D Carte Graphique Pour 2

Passive Coolers Dual Head 3D Office Graphic Card For 2 Displays Matrox G45+32MB 

Passive Coolers Mga Dual Head 3D Graphic Card For 2 Displays Matrox G45 +32MB #

Passivgekühlte Doppio Testa 3D Scheda Per 2 Monitor Matrox G45 + 32MB RAM G20 

Passivgekühlte Doppio Testa 3D Scheda Per 2 Monitor Matrox G45+32MB Mga G20

Passivgekühlte Doppio Testa 3D Scheda Per 2 Monitor Matrox Mga G45 32MB RAM G20 

Passivgekühlte Double Tête 3D Graphique Pour 2 Monitore Matrox G45+32MB Mga G20

Passivgekühlte Double Tête 3D Graphique Pour 2 Monitore Matrox G45+32MB RAM G20 

Passivgekühlte Double Tête 3D Graphique Pour 2 Monitore Matrox Mga G45 32MB RAM

Passivgekühlte Dual Cabeza 3D Gráfica Para 2 Monitor Matrox G45+32MB Mga G20 

Passivgekühlte Dual Cabeza 3D Gráfica Para 2 Monitor Matrox G45+32MB RAM G20

Passivgekühlte Dual Cabeza 3D Gráfica Para 2 Monitor Matrox Mga G45 32MB RAM G20 

PASSIVGEKüHLTE DUAL HEAD 3D GRAFIKKARTE F.2 MONITORE MATROX MGA G45 32MB RAM G20

PASSIVGEKüHLTE DUAL HEAD 3D GRAFIKKARTE FüR 2 MONITORE MATROX G45+ 32MB MGA G20 

Passivgekühlte Dual Head 3D Graphic Card For 2 Displays Matrox G45 +32MB Mga G20

Passivgekühlte Dual Head 3D Graphic Card For 2 Displays Matrox Mga G45 32MB RAM