This circuit controls the passage of the signal from one speaker to another. The potentiometers must be of wire 50 to 100 ohms with dissipation according to the power of the sound system.
This stage of audio power is suggested by the Hitachi Semiconductor Manual, using a complementary pair at...
This stage is intended to receive modulated optical signals, using as a receiver a photodiode....
This circuit has an automatic dynamic gain control in a range of 6 dB to 40 dB. We found it in...