Move the sliders of the resistor or the inductors. By changing the inductance value, you emulate a core appearing in the coil or a metal object approaching, and therefore the capacitance increases, the LED lights up, and a sound appears in the speaker - you can hear it if you press the play button. This is a metal-detector kit sold in Chinese stores, and here is its simulation.
This page is a utility for simulating эмуляция металлодетектора из китая mds-60 онлайн и схема online with specified initial values.





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