This LED flasher was described in the Radio Electronics Experimenter magazine special issue of 1989. It was designed to be assembled with SMD components.
The CMOS TLC555 can be gated from external CMOS circuits using the configuration shown here. The...
In the figure we have a two-channel preamplifier with two 741 integrated circuits. The circuit is from a...
We found this circuit in a documentation from the 50's. The transistors are germanium types. The...