This circuit, found in a 1958 magazine, is for reference only, since the components are not easy to find today. The transistors are germanium types and power supply is made by common cells.
We found this circuit in documentation from the 1980s. It is an input stage for a digital...
This biestable touch circuit was found in American 1980s documentation. The circuit must not be...
This double-T sine wave oscillator was found in the December 1995 issue of Electronics Now...