We found this circuit in a magazine 73 for radio amateurs from the 80's. The circuit makes use of an epochal component which is programmed according to the table beside the diagram.
The circuit presented is from a 2006 documentation. It can turn a set of lamps on or off when...
This circuit generates a 5.3 kHz linear ramp with the indicated components. The 7555 is the CMOS...
This transceiver circuit was found in a 1997 documentation. The circuit operates in the 80 meters...