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 simple musical instrument was obtained from a 1967 magazine. If the original transistors are...
The transistor of this circuit can be the BC558. The circuit is from an old documentation...
We found this circuit in an old American documentation for hams. The circuit serves as a telegraph...