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BASIC_MOS_OSCILLATOR

2016-08-12 11:00  
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BASIC_MOS_OSCILLATOR
Output is 50 Hz when R1 and R2 are 3.3 megohms, increasing to 30 kHz as resistor values are reduced to 5100 ohms. Circuit has no inherent lower frequency limit; with 22-megohm resistors and 1-μF capacitors for C1 and C2, sine-wave output is 0.007 Hz. Articlegives basic equations for circuit. Features indude high input impedance, fast slew rate, and high output voltage capability. Combination of bridge rectifier with monolithic zener diodes in regulating system provides practically zero temperature coefficient.-M. Bailey, Op-Amp Wien Bridge Oscillator, Wire-less World, Jan. 1977, p 77.