This circuit is from a 70s documentation. The maximum sampling rate is 800 Hz. The operational amplifier is a common type at the time.
This simple unregulated power supply with half-wave rectification is for small appliances that do...
This simple latching alarm circuit using CMOS gates was found in the May 1990 Radio Electronics magazine....
This circuit was found in the October 1989 issue of Radio Electronics magazine. It drives an...