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Op-amp - Abbreviation for operational amplifier. See operational amplifier. Open loop gain



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Electronic components

Op-amp - Abbreviation for operational amplifier. See operational amplifier.

Open loop gain - The gain of an amplifier when no feedback is present.

Open loop mode - An amplifier circuit having no means of comparing the output with the input. (No feedback.)

Operational amplifier - A high gain DC amplifier that has a high input impedance and a low output impedance. Op-amps are the most basic type of linear integrated circuits.

Oscilloscope - An instrument used to display a signal graphically. Shows signal amplitude, period and wave shape in addition to any DC voltage present. A multiple trace oscilloscope can show two or more waveforms at the same time for phase comparison and timing measurements.

Output - Terminal at which a component, circuit or piece of equipment delivers current, voltage or power.

Output impedance - Impedance measured across the output terminals of a device without a load connected.

Output power
 - Amount of power a component, circuit or system can deliver to a load.

Overload - Condition that occurs when the load is greater than the system was designed to handle. (Load resistance too small, load current too high.) Overload results in waveform distortion and/or overheating. Overload protection - Protective device such as a fuse or circuit breaker that automatically disconnects a load when current exceeds a predetermined value.

Parallel - Circuit having two or more paths for current flow. Also called shunt. (Back to top)

Peak inverse voltage - (PIV) The maximum rated value of an AC voltage acting in the direction opposite to that in which a device is designed to pass current.

Peak to peak - Difference between the maximum positive and maximum negative values of an AC waveform.

Period - Time to complete one full cycle of a periodic or repeating waveform.


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