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Forum Index : Electronics : Siglent ISFE Isolated Front End module

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phil99

Guru

Joined: 11/02/2018
Location: Australia
Posts: 2155

Posted: 06:29am 30 Dec 2023

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1% is quite good. You must be using quality resistors.

To get closer try 8.72k... or is it 8.88k? One or the other should do it ;)
Edited 2023-12-30 16:43 by phil99

gaspo
Regular Member

Joined: 25/06/2018
Location: Australia
Posts: 65

Posted: 07:06am 30 Dec 2023

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phil99 said To get closer try 8.72k... or is it 8.88k?

Next time I'll be ordering from LCSC I'll get some more values from E48/E96 range.
It is good enough for now.

pd--
Senior Member

Joined: 11/12/2020
Location: Australia
Posts: 122

Posted: 03:00am 07 Jan 2024

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Hi gaspo
i am about to make a couple of probes my self and was wondering on the power consumption.

The documentation seas 50ma witch is probably a bit high for a 9v battery.
Any recommendations on weather i should yous 2 x 18650's or a 9v battery is ok

thanks

gaspo
Regular Member

Joined: 25/06/2018
Location: Australia
Posts: 65

Posted: 06:59am 07 Jan 2024

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I recorded a current of approximately 53mA, and with a discharge rate of 50mA, the Duracell 9V battery would only sustain this for approximately 8 hours.
Alternatively, opting for 2x 18650 batteries in series would provide a duration of over 100 hours, or utilizing a 9-12V wall adapter is also a viable option.

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