The purpose of this circuit found in an old Elektor is to light a lower power lamp when the bigger one burns out. The loads depend on the triacs.
The circuit presented is a simple MW tuner that can be plugged into the input of any audio...
This circuit was obtained from an ancient American documentation. The coil consists of 80 to 100...
This circuit was found in a 1980s documentation, using a comparator from the time. The...