Power Inverter Use for Television and Audio: Tips for Reducing Interference
Even though our power inverters are designed with shielding and filtering to minimize signal interference, some interference with your television picture may still occur, especially when dealing with weak signals. Here are some suggestions to help improve your TV reception when using a power inverter:
- Check Antenna Signal Quality: Before anything else, ensure that your television antenna provides a clear signal under normal conditions, such as when plugged into a standard 110AC wall outlet at home. Additionally, ensure the antenna cable is properly shielded and of high quality.
- Reposition Equipment: Try changing the positions of the inverter, antenna cables, and television power cord. Sometimes, simply moving these components around can reduce interference.
- Isolate the TV from the Power Source: To minimize interference, isolate the television, its power cord, and antenna cables from the 12-volt power source. You can run an extension cord from the inverter to the TV, ensuring that any excess AC power cord is kept from the TV set.
- Coil Cables: Coil the television power cord and the input cables running from the 12-volt power source to the inverter. This can help reduce electromagnetic interference.
- Use a Ferrite Data Line Filter: Attach a “Ferrite Data Line Filter” to the television power cord to filter out interference. Depending on the severity, more than one filter may be needed. These filters are available at electronic supply stores like Radio Shack (Radio Shack Part No. 273-105).
Note: Some low-cost audio systems may emit a slight “buzzing” sound when powered by an inverter. This is typically due to inadequate filtering within the audio system itself. The only reliable solution is a sound system with a higher-quality power supply.
