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.
Intended for amplification of signals in the 1.7 MHz to 1 30 MHz range, this circuit uses a dual...
This circuit was found in a Popular Electronics from the 90s applying to common automotive...
This circuit of a Popular Electronics from the 90s makes use of components of the time. The...