Using 3 ports, this rectangular oscillator was found in the March 1996 issue of Electronics Now magazine. The maximum frequency is a few megahertz, determined by R1 and C1.
The diagram shows an AND gate implemented with an LM3900 transconductance operational. The circuit is...
Found in a Popular Electronics from the 80's, this circuit makes use of a time integrated to...
This circuit was obtained from old documentation, triggering when there is a power cut on the...