This interesting circuit for SMD assembly appeared in the November 1987 issue of Radio Electronics magazine. The phonons are generated by selected resistors that are fitted to the assembly.
This circuit was found in a 1980s document. The integrated circuit is from the time and the power...
This control for 1/15 HP motors with 5,000 rpm for 115 V power grid was suggested by a Motorola...
This circuit was obtained from an Analog Devices manual from the 90's. The integrated circuit is...