This circuit was found in the Linear Applications Handbook of the National Semiconductor of 1994. Some of the components used are not easy to obtain, but equivalents can be used.
This sequential circuit drives 6 SCRs that control incandescent lamps. Other types of lamps should...
The circuit illustrated in Figure allows external loads (8) to be driven from parallel port...
This circuit that emits siren sound can be used in a fire alarm. We found it in an old American...