Pulse modulated core-transistor multivibrator for inverter control

A new core-transistor multivibrator for firing a thyristor inverter is presented. In the multivibrator introduced here, we conserve size, weight, and power by use of a pulse modulated supply instead of a continuous dc supply. The frequency can be controlled over a wide range by changing the volt time integral of the pulse train. A phase locking technique is developed to prevent fluctuating frequency errors which might otherwise occur in the output.