Unlike the previous one, this circuit is intended for the reception of frequency modulated signals transmitted by the power grid. The circuit is from a Radio Electronics from February 1989.
This circuit is from an article that teaches how to assemble it in the magazine Electronics Now...
This circuit is from the National Semiconductor CMOS manual of 1977. What this circuit does is to...
This passive mixer has a configuration that does not always lead to good results from the use of...