Circuit diagram of multi-vibrator composed by triodes

Published:2011/9/7 3:48:00 Author:Vicky | Keyword: multi-vibrator, triode | From:SeekIC

The above picture is a multi-vibrator composed by triodes. The circuit is still composed of phase inverter coupling by two-polar base resistance-capacity. When the circuit power is on, the two tubes cannot be conducted at once, because the charging route for CA is: Ec→R2→CA→Rc1; the charging route for CB is : Ec→Rc2→CB→R1. When CA and CB are charged to a certain value, UCA and UCB , as the forward bias voltage of tube base loop, make Ib1 and Ib2 increase. Due to the performance of positive feedback, the BG1 and BG2 soon becomes saturation. This is a temporarily-stable state. Once the saturation starts, CA discharges via emitter framework of Rb2, BG2 and resistance Rc1.



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