Additional Pull Pull (CB6119E)

This stage was found in a 1964 Electronic Design. The transistors are of the time and the shape of the signal obtained is shown in the diagram.

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Incandescent Strobe (CB12278E)
This strobe light circuit with incandescent lamp was found in a 1978 publication. We can mount it with...
9-second timer (CB24445E)
This circuit was obtained from documentation from the 90s. The solution that can be found...
Metal detector receiver (CB22457E)
Found at Popular Electronics this receiver is used with a transmitter for quadrature-coil signals....