What are the electronic components that affect pitch and volume stability due to temperature changes in OpenTheminV3?

Posted: 1/20/2024 6:00:31 AM

Joined: 1/8/2024

I understand that not all components will affect the stability of volume and pitch with temperature changes, so I would like to use more precise electronic components for some circuits instead of all, as that would increase costs. Please have experienced friends give me some guidance, thank you!

The following is the circuit schematic diagram

Posted: 1/25/2024 10:57:29 PM

From: Montana, USA

Joined: 9/2/2019

Mainly L1 and L2, but it doesn't matter how precise they are, only what the temperature coefficient is.

You would have to use air core coils to make a big improvement.

Instead of that, I would suggest adding a temperature sensor and modifying the software to apply a compensating voltage via the tuning DACs.

Posted: 1/31/2024 3:21:38 AM

Joined: 1/8/2024


Thank you.

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