This time base circuit for the oscilloscope was obtained from an Electronics Now from the 90s. The circuit is intended to control the cathode ray tube of old oscilloscopes.
This astable was found in a European technical documentation from the 80's. The perfectly...
This circuit generates the busy tone of ordinary telephones. The transistors can be the BC548 and...
This is another one of the many sequential circuits that we have in this section and on the...