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MulinGROUP / QUARK

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How inductive values are measured #3

Open jshxcn opened 3 years ago

jshxcn commented 3 years ago

How inductive values are measured?

Mulinby commented 3 years ago

@jshxcn, Hi. Inductance is measured between the probe pin and the ground pin on capacitor C5. To do this, on the controller pin IND_EN is transferred to a high level and the U1 key is opened. At the same time, the U2 key is closed so as not to interfere. Further, a short high pulse is supplied to the IND_GEN output, which is through the current-limiting resistor R7 and diode D2. This pulse hits the measured inductance and, together with the capacitance C5, an oscillatory circuit is formed, the resonant frequency of which we measure at the output of the comparator U10. But this diagram is the previous version. The new scheme has not yet been published. We'll upload it a bit later. However, the principle is the same.

jshxcn commented 3 years ago

@Mulinby Thank you very much!I'm looking forward to your update!

Mulinby commented 3 years ago

@jshxcn, Thank you! Coming soon)