Found in a 1964 Electrronic Design, this circuit is intended to control analog video signals. The circuit has an attenuation of 45 dB at 20 kHz.
The circuit shown in figure 8 is an application suggestion for ISL8107, a new integrated circuit from...
This good quality amplifier found in a 1982 documentation has a traditional complementary output...
Found in old documentation, this circuit has only the most difficult component to obtain the PUT....