This interesting circuit for the RDA8851 allows you to obtain two volumes with a simple touch. The circuit is from an Electronics Now from December 1988. Note the amplifier voltages.
The circuit shown in the figure produces pulses of high intensity light at a frequency that...
This logic tester circuit was published in the November 1980 issue of Radio Electronics magazine. The...
Antenova Grandis antennas can be purchased from Mouser Electronics for frequencies from 868 MHz to...