We found these circuits in a 90s Radio Electronics. In them, we have the way to turn a load on and off using pressure switches. The circuit can be used with other types of direct current load.
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...