This very low current circuit with the ICM7860 was found in the April 1995 Electronics Now magazine. The output voltage depends on the input voltage.
This circuit uses a voltage comparator and can produce signals up to 20 MHz. The resistors R are...
It can be obtained from Mouser Electronics the new LM290xAQ operational amplifiers from Diodes...
This circuit was obtained from a Texas Instruments 1985 document. The circuit is powered by 1.5 V...