This circuit is from an old documentation making use of a 3,579,645 MHz analog color television crystal. The audio amplifier supports the equivalent.
April 2017 - Texas Instruments' new high-precision TMP468 sensor can now be obtained from Mouser...
This circuit using current components was found in an old documentation. It is a sequential circuit...
This circuit was found in a 1965 General Electric manual. What it does is give a warning if you...