Position: Index > Oscillator Circuit >

LOW_FREQUENCY_CRYSTAL_OSCILLATOR

2016-08-02 13:58  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.


LOW_FREQUENCY_CRYSTAL_OSCILLATOR
Q1, Q2, and the associated circuitry form a modified astable multivibrator in which the loop gain is automatically adjusted to the threshold of oscillation by means of field effect transistor Q3. Q4 lin-early amplifies the signal present at the collector of Q2 and isolates the oscillator section of the cir-cuit from the output. This stage features wideband operation and delivers a clean 2.5-V amplitude sine wave into a resistive load greater than or equal to 20 kΩ. The stage comprising Q5 has a voltage gain of 1 and its sole purpose is to isolate the nonlinear effects of rectifier Dl from the output.