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In the regenerative circuit discussed here, the active device also functions as a detector; this circuit is also known as a regenerative detector. [16] A regeneration control is usually provided for adjusting the amount of feedback (the loop gain). It is desirable for the circuit design to provide regeneration control that can gradually ...
regenerative circuit A circuit that employs positive feedback; can be an amplifier or an oscillator. relaxation oscillator An oscillator that relies on an active device periodically changing state; such oscillators usually produce a square-wave or sawtooth waveform, different from the approximately sinusoidal waveshape of a harmonic oscillator ...
The circuit designer can implement this compensation externally with a separate circuit component. Alternatively, the compensation can be implemented within the operational amplifier with the addition of a dominant pole that sufficiently attenuates the high-frequency gain of the operational amplifier.
The idea of positive feedback was already current in the 1920s with the introduction of the regenerative circuit. [11] Friis & Jensen (1924) described regeneration in a set of electronic amplifiers as a case where the "feed-back" action is positive in contrast to negative feed-back action, which they mention only in passing. [12]
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The idea of positive feedback already existed in the 1920s when the regenerative circuit was made. [13] Friis and Jensen (1924) described this circuit in a set of electronic amplifiers as a case where the "feed-back" action is positive in contrast to negative feed-back action, which they mentioned only in passing. [14]