中的那样）当 bottom transistor 关闭，则输出为⾼电平。此处没法输出⾼电平，想要输出⾼电平，必须外部再接⼀个上拉电阻（pull-up resistor）。Open-drain 只能够漏电流（sink current），如果想要集电流（source current），则需要加⼀个上拉电阻。注意：开漏如果不连接外部的上拉电阻，则只能输出低电平。
Another aspect of the present invention is a voltage pull up apparatus for a USB connection. The apparatus includes a pull down resistor connected to the USB connection, a trickle current source attached to the USB connection, and a boost current source attached to the USB connection. 展开 ...
(就像push-pull中的那样)当bottom transistor关闭,则输出为高电平。 此处没法输出高电平,想要输出高电平,必须外部再接一个上拉电阻(pull-up resistor)。 Open-drain只能够漏电流(sink current),如果想要集电流(source current),则需要加一个上拉电阻。 常见的GPIO的模式可以配置为open-drain或push-pull,具体实现上...
Hepulledto a stop behind a pickup truck... 他在一辆皮卡货车后面停了下来。 柯林斯高阶英语词典 The trainpulledto a halt at the platform. 火车在站台边停下。 柯林斯高阶英语词典 Hepulledaway, extending his lead to 15 seconds... 他把领先优势逐渐扩大到了15秒。
Push-pull is the most common output configuration. Just as its name suggests, push-pull output is capable of driving two output levels. One is pull to ground (pull/sink current from the load) and the other is push to power supply voltage (push/source current to the load). The push-pul...
The value of the pull-up resistor needs to be chosen to satisfy two conditions: When the button is pressed, the input pin is pulled low. The value of resistor R1 controls how much current you want to flow from VCC, through the button, and then to ground. ...
Learn more about the Microsoft.TeamFoundation.SourceControl.WebApi.GitConstants.RefsPullTargetFixupSuffix in the Microsoft.TeamFoundation.SourceControl.WebApi namespace.
上拉、下拉电阻的作用硬件（Pull-up, pull-down resistors,hardware）Pull-up, pull-down resistors play the role of hardware.Txt, do not give up on yourself! (mom once said to me, the moment I turned round to go out, I burst into tears and didn't want anyone to see it!) To see this...
上拉电阻原理(Pull-upresistorprinciple)Pull-upresistorprincipleWhycanpull-upresistorbepulledup?Apull-upresistoronthe10Kbetweenthenodeandthepositive5Vpowerisusedtopullupthepointofthenode.Ireallydonotunderstand,inordertoputthepotentialup,directlyconnectedtothepowersupplyisnotenoughThepowersupplythroughthis10Kresistor...
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