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FREQUENCY-RESPONSE CURVE
SERIES PEAKING

Neets Module 08-Introduction to Amplifiers
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2-29 The UPPER-FREQUENCY RESPONSE of an amplifier is limited by the inductance and capacitance of the circuit. The INTERELECTRODE CAPACITANCE of a transistor causes DEGENERATIVE FEEDBACK at high frequencies. VIDEO AMPLIFIERS must have a frequency response of 10 hertz to 6 megahertz (10 Hz - 6 MHz). To provide this frequency response, both high- and low-frequency compensation must be used. PEAKING COILS are used in video amplifiers to overcome the high-frequency limitations caused by the capacitance of the circuit.






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