有人說:一般变压器、电感和漏感测试的频率选1K/1V;
也有人說:一般变压器、电感和漏感测试的频率选100khz,0.1v．原因是用1v时,场强太强;
還有人說:根據產品工作時候的頻率來測試,比如說工作在50K,那麼測試的频率选50K/1V;
我想針對這個問題探討下,,希望能夠解決!
探討一般变压器、电感和漏感的測試條件(關注中)
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@steven.lee
此问题真是问得太好了.我以前也问过一个前辈,据他说大部份的测试频率是依美军规所订:其测试频率应与使用频率相近才可(只是听说,但一直没有机会证实). 现在的厂商于实际生产中感值一般都依1KHz漏感以50KHz居多.至于为何这样,我也没打听到.其中我只了解到Invertertransformer的漏感依50KHz是因为Invertertransformer的工作频率在50KHz左右. 关注此帖中.请各位多多指教.
过年好!
STEVEN兄说的对.
测试条件当然要和工作条件越接近越好.
一般来说,小功率高频变压器电感值测试条件多为1KHZ 1V.
这个应该和板子工作频率很接近吧.
我司为专业生产电子变压器的厂家,我也有问过客户变压器工程师,说的是以上的答案.
希望对大家有帮助!
王先生 13562187623
STEVEN兄说的对.
测试条件当然要和工作条件越接近越好.
一般来说,小功率高频变压器电感值测试条件多为1KHZ 1V.
这个应该和板子工作频率很接近吧.
我司为专业生产电子变压器的厂家,我也有问过客户变压器工程师,说的是以上的答案.
希望对大家有帮助!
王先生 13562187623
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看看这段话可能有一些启发．
Inductance is measured on a bridge with variable voltage and frequency.The flux density should be
less than 10 gauss.Cores have to be properly mounted around the measuring coil,or for toroids,
wound with the correct number of turns.
Testing at low gauss level is important.Magnetic material characteristics change considerably at higher
drive levels.Since all applications are different,it is necessary for manufacturers to normalize
characteristics at a low level to insure a degree of consistency in magnetic properties and that “apples
are compared to apples.”
Inductance is measured on a bridge with variable voltage and frequency.The flux density should be
less than 10 gauss.Cores have to be properly mounted around the measuring coil,or for toroids,
wound with the correct number of turns.
Testing at low gauss level is important.Magnetic material characteristics change considerably at higher
drive levels.Since all applications are different,it is necessary for manufacturers to normalize
characteristics at a low level to insure a degree of consistency in magnetic properties and that “apples
are compared to apples.”
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@bean
看看这段话可能有一些启发．Inductanceismeasuredonabridgewithvariablevoltageandfrequency.Thefluxdensityshouldbelessthan10gauss.Coreshavetobeproperlymountedaroundthemeasuringcoil,orfortoroids,woundwiththecorrectnumberofturns.Testingatlowgausslevelisimportant.Magneticmaterialcharacteristicschangeconsiderablyathigherdrivelevels.Sinceallapplicationsaredifferent,itisnecessaryformanufacturerstonormalizecharacteristicsatalowleveltoinsureadegreeofconsistencyinmagneticpropertiesandthat“applesarecomparedtoapples.”
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