This circuit was found in the July 1998 issue of Electronis Now magazine. It is a traditional gated version of the 4049 and has its frequency controlled by R2.
This circuit with JFET and Unijunction was found in an ancient American documentation. The...
This metering bridge circuit uses one power supply only. The operational ones depend on the...
We found this configuration in the 1964 RCA transistors manual. As indicator loads in each stage,...