This circuit filters low frequency noise from the turntable motor. We found it in a 1989 documentation. The font doesn't have to be symmetrical, but it should have excellent filtering.
This circuit was found in American documentation from the 90s. The coupler is the type that uses a...
This traditional configuration was found in a 1984 publication and does not innovate anything we...
This operational amplifier circuit with power output using complementary transistors was found in a...