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Electromagnetic transponder having oscillator circuit extracting incoming radiating field with voltage measuring field level and detuning activation when set field level exceeded.
Electromagnetic transponder having oscillator circuit extracting incoming radiating field with voltage measuring field level and detuning activation when set field level exceeded.
The electromagnetic transponder (10) has a parallel oscillator circuit (C2,L2) extracting a radiating field. A voltage measure (18) of the recovered signal activates a detuning circuit (C3) when the voltage level exceeds a set level, indicating high incoming power.
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