This circuit is from an old documentation, making use of an operational of the time. The circuit can be adapted to use modern components. The power supply must be symmetrical.
This is a simple Power supply for TTL circuits using the 7805 IC. This IC can source up to 1 A to...
To small metal plates are used as sensor in this circuit. The skin resistance is enough to trigger the...
The sequential tones of this musical bell are adjusted in the trimpot and the speed with which they...