1/1/2024 0 Comments Audio isolator circuit![]() ![]() Do not try to use other types of transformers because your circuit would not work then and they would cause annoying interference to other TVs connected to same antenna network (and in worst case you get cable TV people hunting for you because you messed with their cable network). if you have a red and a blue wire: connect the blue ends to one antenna plug, and the red wire to the other plug - not two colors on 1 plug.įor TV transmission high frequency signals such a simple transformer (using a suitable core) is almost perfect. ![]() Make the leads between the coaxial antenna plugs and the core as short as possible. One wire is the primary winding, the other the secondary (so it helps to color code the wires). Most speaker systems use a ground loop circuit to connect. The transformer is mounted on a printed circuit board which is. Ground loop isolators are used in a variety of electrical systems, especially in audio/video devices. Wrap the twisted wire a few turns around the core. The AIB-1 is a 1:1 isolation transformer designed to enable coupling between audio circuits. Next you need a small transformer core suitable for UHF frequencies. ![]() Twist the two wires, about 1-2 twists per cm is enough. Take two strands of insulated wire, length: 10-20 cm. You can simply make such a 1:1 transformer: This solved the hum, no need for a messing with the audio signal, and the tv image quality did not suffer (most tv's get an overdose of signal from the cable tv anyway).
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