I have
I have a mini headphone amplifier (12vdc 500mA) and aviation portable intercom (12vdc 1A) connected to separate power supplies (12v sealed lead acid batteries 7.5AH) and the intercom and the amp work great … very clear and crisp and amplified.
The problem I have is that when I connect the intercom and amp to the same power supply … sealed lead acid battery 7.5A 12V DC, there is major interference or crackling of the sound coming through the headphones from the amp. The sound is not clear but very broken up and not working at all. Both positive wires are connected together and both negatives together and then to the battery.
When I separate the positives on to different fuses but still using same battery still get the same problem. The only way to get them to work is on separate power supplies.
Question: How can I use the same battery (1 power supply) to power both these devices without risk of interference from each other i.e radios, intercoms, amps, etc ? This is also happening with radios. I think this is called dirty power or interference.
I have a mini headphone amplifier (12vdc 500mA) and aviation portable intercom (12vdc 1A) connected to separate power supplies (12v sealed lead acid batteries 7.5AH) and the intercom and the amp work great … very clear and crisp and amplified.
The problem I have is that when I connect the intercom and amp to the same power supply … sealed lead acid battery 7.5A 12V DC, there is major interference or crackling of the sound coming through the headphones from the amp. The sound is not clear but very broken up and not working at all. Both positive wires are connected together and both negatives together and then to the battery.
When I separate the positives on to different fuses but still using same battery still get the same problem. The only way to get them to work is on separate power supplies.
Question: How can I use the same battery (1 power supply) to power both these devices without risk of interference from each other i.e radios, intercoms, amps, etc ? This is also happening with radios. I think this is called dirty power or interference.