1. For this reason, balanced lines are normally driven from balanced circuits . 2. Filter topologies may be divided into balanced form when employed in balanced circuits . 3. For audio and telecommunications, balanced circuits are usually required, such as with the twisted pair format. 4. The geometry of the cable ensures that magnetic fields will causes equal interference of both legs of the balanced circuit . 5. However, it can be converted to a balanced circuit by placing half the series resistance in the return path. 6. However, it can be converted to a balanced circuit by placing half the series resistances in the return path. 7. To a magnetic field, both legs of the balanced circuit appear to be in the exact center of the star. 8. An exception to the general rule may be made in the case of " push-pull ", or balanced circuits . 9. This configuration places the geometric center of each of the two legs of the balanced circuit in the center of the star. 10. Electronic mixers are usually made with transistors and / or diodes arranged in a balanced circuit or even a double-balanced circuit.