This circuit was found in an article in Radio Electronics magazine from May 1975. The circuit has several features and is powered by a 12 V source or battery.
This timebase was found in a European 1980s documentation. The circuit uses well-known components...
We found this circuit in an old documentation. What it does is flash two LEDs when night falls or when...
I found this circuit in a 1986 English magazine. It can still be easily assembled, exchanging Q1...