当X11端输入信号接地，即UX11=0 V时，利用GDS1102A数字示波器测量XJ7端和X12端的波形，分别记为uXJ7和uX12，两者波形如图3所示。 当uXJ7较小时，反相放大倍数为50；当uXJ7较大时，运算放大器A3：A会饱和，输出波形是正负对称的梯形波，但图中输出波形很接近矩形波 ...

The HP Smart Tank 7001 (known as the 7005 outside the US) is a relatively affordable refillable inkjet all-in-one aimed at small business, or a home office. It’s quite basic, in that there’s ...

HP is a one of the best-known PC brands in the world, and a top option for both laptops and desktops. And when it comes to laptops specifically, they offer a broad variety of options to suit just ...