The circuit shown, with the printed circuit board, was found in an article in the June 1990 issue of Radio Electronics magazine. Integrated circuits must be equipped with heat sinks.
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...