Found in an American publication from 1969, this circuit can be adapted to be used as a shield. Operational amplifiers can be of modern equivalent types.
This circuit can be used as a clok in digital applications. Power supply is 5-V and the pins for...
The MC15555 of this circuit is the old version of the common 555. What this circuit does is...
This circuit was indicated in an old American publication to serve as a Laser alarm system as a...