I found tis circuit in na old documentation from 1958. The circuit uses germanium transistor availble that time and hard to obtain today. The circuit is indicated for phono applications using variable reluctance transducer.
This is the traditional configuration of na Astable Multivibrator using two NPN ttransistor....
Reversing the switching action, with the output going high when the input is low, can be done by...
November 2016 - Texas Instruments' new TPS62135 and TPS621351 step-down converters with a wide...