Operational Amplifiers Questions

• Current cannot flow to ground through a(n) ________.
• The voltage required to force the differential output to zero is called _______.
• The input impedance is ______ for the amplifier in the given circuit. The data sheet values are Zin = 3 MΩ, Zout = 80 Ω, and Aol = 250,000.
• An op-amp circuit in which the output voltage is equal to the difference between the two input voltages is called a(n) _____
• A virtual ground is a(n) ______ ground because this point is at zero volts.
• The voltage gain is ______ for the amplifier in the given circuit.
• The given circuit is ___.
• The resistors Rf and Ri in an op-amp circuit control ______ .
• The 555 timer can be connected to operate a(n) ___________.
• An oscillator whose frequency can be controlled by an input "control voltage" is called a(n) ______ .
• A ______ is not a multivibrator.
• If the input to a comparator is a sine wave, the output is a(n) _________.
• A circuit that has an output equal to the algebraic sum of the inputs is called a(n) ______ .
• The feedback resistor has a value of ______ in the given circuit
• A PLL can be used as a(n) ___________.
• Switching voltage regulators have ______ than linear regulators.