Hi all,
Can you please send me the formuale for calculating temperature coefficient of dielectric constant ?
I am confused in following formulaes
τε = [( ε85- ε25)/( ε25 * 60)]*1000000
τε = [( ε85- ε25)/( ε85 * 60)]*1000000
τε = [( ε25- ε85)/( ε25 * 60)]*1000000
τε = [( ε25- ε85)/( ε85 * 60)]*1000000
Can you please suggest me the correct out of these?
Dear collrague Ranjeet Singh
Have a nice time and good day
Concerning your formula of calculating temperature coefficient of dielectric constant, the mentioned values in the equation:
τε = [( ε85- ε25)/( ε25 * 60)]*1000000
The original formulas is :
τε = [(f2-f1)/f1(T2-T1)]x106 ppm/C°….(1)
where f1 and f2 represent the resonant frequencies at T1 and T2, respectively.
The references are:
[1] Yih-Chien Chenn, Hong-MineYou,Kuang-ChiungChang
Ceramics International, 41 (2015) 5257–5262.
[2] Jiamao Li, Bo Yao, Dechao Xu, Zhixing Huang, Zijian
Wang, Xin Wu, Chuangang FanJournal of Alloys and
Compounds 663 (2016) 494e500
So if T1 is 25 C° and T2 is 75 so Eq.1 will be:
T2 –T1 = 75-25 =50
and so on.
I wish this is useful and help you.
Yours
A. El-Denglawey
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