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.
This circuit is from old documentation. It shows how to implement the voltage adjustments of an...
This circuit offers excellent sound quality for headphones of 150 ohms or more. The circuit was...
This circuit was found in an American documentation of the 90s. Optical resources with the LDR as a...