This stage of IF to 455 kHz operates with voltages from 1.5 V. We find it in a 90s Popular Electronics. The integrated circuit is uncommon today.
This circuit is used in a LASER detection system to avoid echoes from short distances in systems...
In addition to keeping a battery constantly charged, this circuit only lights lamps when it is...
This fraction of a watt power stage was published in Radio Electronics September 1950....