Quartz-controlled complementary multivibrator

The operation and performance of a new quartz multivibrator is presented. The multivibrator is based on a freerunning circuit using a complementary regenerative switch. Owing to the use of this complementary switch, the multivibrator has high regeneration, low output impedance and no integration effect. As a result, it has small transition times (40ns) and a possibility of high loading (100¿). Owing to the use of the quartz crystal, the multivibrator frequency is very stable at changes of supply voltage and load impedance. The circuit temperature stability is mostly dependent on that of the quartz crystal. The multivibrator can be adjusted for the generation of symmetrical or asymmetrical waveforms.