This circuit was suggested by National Semiconductor in one of its manuals. The LM108 integrated circuit, uncommon nowadays, can be replaced by an equivalent. The power supply must be symmetrical.
Obtained from an English publication in the 1980s, when a weather station operated in that country at...
This sophisticated moving bar indicator circuit with the LM3915 is from a Radio Electronics...
This digital thermometer circuit with MA1026 module was found in February 1981 Radio Electronics...