Found in a 1967 American documentation, this circuit produces a pulse with a delay that depends on the components used. The operational is from the time.
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...