Worksheet 19-Resonance in a Parallel RCL Circuit Flashcards
What is the major operational difference parallel RCL circuits have when operating at resonance compared to series RCL circuits?
The difference is that at the resonant frequency in a parallel RCL, the impedance of the circuit will be at minimum while current will be at maximum.
What is another name that is used for the tank circuits in devices such as oscillators?
Another name for a tank circuit is the frequency determining device (FDD) in an oscillator.
What is needed to start a tank circuit oscillating?
A tank circuit needs DC voltage to start oscillations.
What is happening in a tank circuit that makes it oscillate?
A tank circuit operates by the two devices charges and discharging into each other at a prescribed frequency.
What is the action called that occurs in a tank circuit when it is oscillating?
The oscillation cycle is called a flywheel effect.
If the tank circuit does not receive any new voltage, what will happen to the output signal?
If the tank circuit does not receive any new voltage, the wave of the output will dampen. This is where the frequency remains constance by the amplitude decreases.
What element in a tank circuit causes gradual dampening of the amplitude?
Energy loss causes the wave to dampen due to resistance in the circuit.
What is the signal called that is added to the tank circuit to maintain its output amplitude?
To maintain amplitude in a tank circuit, regenerative feedback needs to be added.
