This circuit controls 6 LEDs in two sets with the phase change cycles controlled by a 555 oscillator. The circuit can be powered by voltages between 6 and 12 V.
Figure bellow shows how n 4027 can be cascaded to form a divide-by-2. The maximum input frequency...
This medium wave commercial receiver from the 1960s was found in a Japanese publication at the...
This bistable and monostable Vox circuit was found in a 2002 documentation. The 556 is a double 555...