This circuit was found in Signetics documentation from the 90's. The circuit performance curve is shown next to the diagram. The sensor is an NTC.
Found in a 1965 Radio Shack documentation this oscillator can be used with modern general purpose...
This circuit was found in 1980s documentation. The circuit uses components from that time serving for...
This is a typical application circuit of a 565 PLL. The circuit is suitable for selecting a 67 kHz...