This circuit provides both frequency and voltage division. The circuit was found in a 1966 documentation. The circuit must be supplied with voltages from 32 to 40 V.
This thermometer, which uses common diodes as sensors, was found in a 1975 magazine -...
This circuit is from American documentation from the 70s. This configuration appears in this...
We found this Japanese commercial radio diagram of three transistors in a documentation of the...