This circuit was found in RCA documentation from the 90s. It consists of a power control for a load based on a thermocouple. The integrated circuits are uncommon today.
The suggestion for using this circuit from an old American documentation is to use small antennas...
November 2016 - The new wireless power modules for use in wearables from Semtech can now be...
This TTL module can be used in counter and many of them can be cascaded to counts up to 99, 999,...