FIELD: telemetric systems. SUBSTANCE: transponder has aerial 1, electric capacity tap circuit 2, impedance transformer 3, rectifier 4, voltage stabilizer 5, voltage-to-digit converter 6, controllable reactive load 7 coupled with resistor 8, nonlinear capacitance diode 9, inductance 10, constant-current source 11. Transponder is illustrated in two modifications. 1-2-3-4-5-6-7-2-1. EFFECT: increased efficiency. 2 cl, 3 dwg
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