This circuit generates quadrature signals, that is, with a 90-degree phase difference. The circuit must be powered by a symmetrical source and the frequency depends on the capacitors.
This version is one of many that can be found on our website. We found it in Radio Electronics from the...
This circuit for common analog telephones was found in March 1982 Radio Electronics magazine. It...
Figure bellow shows how the 4510, a divide-by-1U, up/down counter with three-state outputs is...