Oscillator astable multi-vibrator with Crystal controller


Oscillator circuit of this nature.Often used as a clock circuit.This circuit uses a million crystal frequency control with stability.And a circuit that does not use the capacitor or Inductor all.
Each transistor to work, the amplifier with feedback. The Q2 transistors to circuits with a gain equal to 1.The gain of the transistor Q1, as a function of the resistance of the crystal, while the resonance.
By default, the resistance will be less than 22K.This is the feedback resistance of the circuit. Therefore, the gain of the circuit Q1, it is higher than one.
Output from a square wave circuit.The size of the signal depends on the voltage input to the circuit.This circuit can oscillate from birth 3 KHz up to 10MHz.

Crystal controller multi vibrator


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