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张珍岚

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[问答]

如何提高MCP42010数字POT分辨率?

嗨,我用MCP42010。它的工作正常,但我想知道,我怎样才能提高同样的分辨率。我想把这个壶换成1欧姆。请帮忙。

以上来自于百度翻译


      以下为原文

    hi,
curently i am using mcp42010. its working properly but i want to know , how i can increase the resolution of same. i want to vary the pot by 1ohm.
please help
thanks

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石双厚

2019-3-8 15:15:50
你看过数据表了吗?总阻力除以步数是…?如果阻力只是其他变量的代理,那么你可以通过调节刮水器的输出来做你想要的。不知道你想做什么,很难提供任何帮助。

以上来自于百度翻译


      以下为原文

    Have you read the data sheet? Total resistance divided by number of steps is...?
 
If the resistance is just a proxy for some other variable then you may be able to do what you want by conditioning the wiper output. Without knowing what you are trying to do, it's difficult to offer any help.
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孙雅念

2019-3-8 15:32:09
我知道每一罐的步骤是255。但是如何进行串联和并联组合,这样我可以把锅换成1或10欧姆。

以上来自于百度翻译


      以下为原文

    i know the steps are 255 for each pot.
but how make the series and parallel combination so that i can vary pot by 1 or 10 ohms.
 
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李兆峰

2019-3-8 15:38:21
可能是好的,我想知道,有时也不确定你能怎么做…

以上来自于百度翻译


      以下为原文

    Could be nice, I wondered that as well at times
Not sure how you can do...
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tijing忽忽

2019-3-8 15:51:30
可能不太实用:串联连接会增加最大值BOT而不影响分辨率,并联会增加有效分辨率,但会非常非线性。通常,改变电路中的增益以补偿步长和使用较大的最大值(不同部分)或串联连接更简单。

以上来自于百度翻译


      以下为原文

    Probably not very practical: series connection will increase maximum value bot not affect resolution, parallel connection will increase effective resolution but will be VERY non-linear. Usually it is simpler to change the gain in the circuit somewhere to compensate for the step size and use a larger max value (different part) or a series connection.
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