With a unijunction transistor and a tunnel diode it is possible to obtain rise times of 1 ns with the circuit shown in the figure. The circuit is from a 1965 Electronic Design.
We found this sensitive moisture detector in an old documentation. The circuit uses a common JFET,...
This circuit, with the assembly in a contact matrix, was found in a publication from the 90s. The...
This modulator circuit for transmitters was found in American documentation from 1964. It can be...