This dual-operator thermometer circuit was found in the September 1982 issue of Radio Electronics magazine. The sensor consists of a general-purpose transistor.
This stereo preamp uses only two germanium transistors. The circuit was found in old documentation using...
I found this circuit in a 1989 American publication called Electronics Handbook. The circuit...
This is the power source suggested in the old European publication for the CB19635E watch. The...