This circuit was found in an Elektor from the 90s. Next to the circuit we have a table with the delays obtained when the circuit is connected according to the positions of the selector switches.
This circuit was suggested by Sprague Electric in an 80's documentation. The circuit uses a...
This circuit was found in an American documentation two years 80. The MOSFET is of double port,...
This circuit is from American documentation from the 90s. The transistor is general-purpose and...