# \#zoh

**URL:** https://forum.plexim.com/tag/zoh/480.md

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## [How to get a pure bias value with zero-order holder](https://forum.plexim.com/t/how-to-get-a-pure-bias-value-with-zero-order-holder/1150)

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**Author:** [@fire](https://forum.plexim.com/u/fire)\
**Replies:** 1\
**Last updated:** [August 9, 2022, 1:10pm UTC](https://forum.plexim.com/t/how-to-get-a-pure-bias-value-with-zero-order-holder/1150 "2022-08-09T13:10:35Z")

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A bias value 2 is given to sinwave, T is 0.5, and i want to get it using ZOH with a sample time 0.25, but the error is bigger with time,why? and how to get the pure bias value? the simple example is attached. 1.plecs (…

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## [When should zero-order hold be adopted?](https://forum.plexim.com/t/when-should-zero-order-hold-be-adopted/1144)

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**Author:** [@fire](https://forum.plexim.com/u/fire)\
**Replies:** 5\
**Last updated:** [July 28, 2022, 10:07am UTC](https://forum.plexim.com/t/when-should-zero-order-hold-be-adopted/1144 "2022-07-28T10:07:08Z")

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hey, I am studying using plecs, and I meet a problem that I don’t know when zero-order hold should be adopted, the example is attached, and it can run without zero-order hold, but when ZOH is added, the waveforms is bad…