Example image of eyePlorer eyePlorer map for 'Frequency multiplier': Oscillation Transmitter Antenna (radio) Crystal oscillator Amplifier Step recovery diode Digital electronics Frequency divider Frequency standard Phase-locked loop Feedback Voltage-controlled oscillator Comparator Voltage Frequency synthesizer Variable-frequency oscillator CPU multiplier Pulse swallowing counter Heterostructure barrier varactor Frequency modulation Arc converter Nova (laser) Negative resistance Piezoelectricity
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