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SC1
Associate
May 27, 2019
Question

STPM34 Minimum measurement time for U/I RMS values

  • May 27, 2019
  • 1 reply
  • 640 views

Hi.

I have a load switched by Triac, on which I perform a measurement with STPM34.

I need to perform a very quick U/I RMS measurement (load is switched on/off)

RMS computation is said to be performed on a 200ms window.

But it seems I need to perform a ùeasurement on at least 500ms to be accurate.

Is there a way to speed up the measurement?

Is it slower beacause I use a STPM34 and not a STPM32?

Thx

This topic has been closed for replies.

1 reply

GPomp
Visitor II
June 13, 2019

Hi,

I observe the same behaviour, the following image shows what I've registred with STPM32:

Is it possible perform a RMS measurement faster?

Thanks