A 555 timer can be configured as an astable multivibrator.

More Questions from Operational Amplifiers

• Operational amplifiers (op-amps) use internal capacitive coupling between stages.
• The TO-5 operational amplifier package can have 5 pins.
• This circuit is operating in a closed-loop mode.
• The voltage-follower amplifier circuit has a fixed voltage gain of approximately 10.
• If the frequency of an astable multivibrator is 54.86 kHz then its period is 1.82 s.
• This circuit is a voltage follower.
• An operational amplifier contains a differential amplifier, a voltage amplifier, and an output amplifier.
• Changing the input voltage to an op-amp circuit will change its voltage gain.
• A virtual ground is a ground for current, but not for voltage.
• Current actually flows into or out of a virtual ground.

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