This circuit produces a signal when the turn signal is on, preventing it from being forgotten in this condition. The circuit was found in a Popular Electronics from the 80s.
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,...