Resonant Electronic Circuits Peter Auer Series and parallel resonant circuits Source: allaboutcircuits,com Capacitor Inductor

Resonant Electronic Circuits Peter Auer Inductive and capacitive reactances Source: electronics-tutorials X C : hyperbolic decrease X L : linear increase Glossary: reactance – Blindwiderstand resonant frequency – Resonanzfrequenz phasor - Zeiger resonant frequency fo Soruce: HyperPhysics

Resonant Electronic Circuits Peter Auer Impedance Source: HyperPhysics Loss (Verlust)

Resonant Electronic Circuits Peter Auer Circuit quality and bandwidth Series resonance Glossary: quality factor – Gütefaktor bandwidth - Bandbreite Quality factor High Q – narrow bandwidth Low Q – wide bandwidth

Resonant Electronic Circuits Peter Auer Source: HyperPhysics Quality factor versus bandwidth in a parallel resonant circuit Source: wikipedia Bandwidth

Resonant Electronic Circuits Peter Auer Applications: Radio receiver and transmitter (amplifier, filter) RFID tags (Radio Frequency Identification) Medical therapy equipment

Resonant Electronic Circuits Peter Auer CLIL-tasks: Explain the function of a resonant circuit to a fellow student Explain the impedance versus frequency graphs Give an instruction for the lab experiment shown in the video Discuss the effect of the Q-factor on the bandwidth

Resonant Electronic Circuits Peter Auer Gap filling text A resonant circuit consists of a …………. and an …………………. The frequency where X L and X C are equal in magnitude is called ………………… At the resonant frequency the impedance of a series resonant circuit is …………. Bandwidth is calculated: ……………….. divided by ……………. The resonant frequency is determined by values of …………. and ………………

Resonant Electronic Circuits Peter Auer Matching exercise Find a matching pair of expressions: minimal impedancenarrow bandwidth capacitive reactanceseries resonance low Qparallel resonance maximal impedanceincrease inductive reactancewide bandwidth high Qdecrease