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Modulation Including Blocking Oscillation
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activity actually amplifier amplitude amplitude modulation animal applied approximately battery blocking oscillator capacitance capacitor capsule cause cells Chapter coil collector components connected convenient crystal crystal oscillator cycle cylinder device diaphragm dipole direction effective electrical electrocardiogram electrodes employed energy example experiments ferrite flow frequency modulation function gastrointestinal tract give high frequencies implanted impulse increase indicated inductance input loop antenna magnetic field measure mentioned meter methods mitter monitored motion multivibrator negative resistance noise observed oscillator oscilloscope output overall pair pattern periodically piezoelectric placed plastic possible pressure pulse radiated radio frequency radio signals radio-frequency range receiving antenna recorded relatively resistance resistor resonant circuit response result sensitivity sensor shift shown in Fig sound subcarrier suitable surface switching telemetry temperature transmitter thermistor tissue tonometer trans transducer transistor transmission tube tuned circuit tunnel diode turns unit variable various velocity voltage wavelength wire