This RCA circuit has current limitation. The circuit is from an ancient American documentation making use of components of the era. The circuit includes the power supply.
This circuit was obtained in a Texas Instruments publication. It is a third-order filter with...
This circuit was found in a 1977 Radio Shack documentation. The unijunction transistor can be...
With this circuit published in Radio Electronics magazine in September 1959, it is possible to use a...