This circuit can be used in a signal level indicator with LEDs. The circuit is from an Electronics Now dated January 1996. The power supply must be dual.
This circuit of old documentation is based on an operational amplifier that is no longer used...
This configurable CMOS configuration for frequencies up to a few megahertz was obtained in an...
This circuit is from a 1968s Motorola documentation. The load can range from 10 to 100ohm and the...