If you are tired of replacing batteries in your portable radio or in any other battery-powered device, using an AC power adapter is a good alternative. All you need to do is to determine the voltage(V) and current (mAh) of the device.
How do you connect a power adapter to an electrical device?
The first way to connect the power adapter to your electrical device is to use a DC power jack with a built-in switch. On this connector, pin 1 is normally connected to pin 2. But when the plug is inserted into the jack, this connection is broken and pin 1 is instead connected to the wall of the plug.
How do you connect a power supply to an electrical device?
Another option for connecting the power supply to the electrical device is to use a substitute or dummy battery. This is anything that takes the shape of the battery and fits in the battery housing, but is used to connect the power supply to the terminals of the battery connectors on the device.
Are you aware the power and voltage ratings on that label are for the AC powered devices to be controlled, and not the receiver consumption? Yes, the receiver/controller alone can be easily powered by a battery, by just measuring its internal DC power supply, removing it and installing a battery with the same characteristics instead.
How do I use a 9v battery?
You would connect your DC 9V source to a plug identical to the one coming out of the adapter and plug that into the power jack on the tablet. A small 9V battery is not sufficient. Your best bet would be a lithium battery. It would run fine off 3 18650 cells in series and a 9V switching regulator.
How do you connect a battery pack to a power supply?
This kind of connector can be used to switch the device from running on the battery pack to running on the power supply whenever the it is plugged in. To wire up this jack to the rest of the circuit, cut the wire coming from the positive terminal of the battery pack in half.
How does a power inverter work?
When the battery is fully charged, the circuit automatically turns on a power inverter and switches the appliance from running on grid power to running on the energy stored in the battery. Then when the battery's voltage drops too low, the circuit automatically switches the appliance back to grid power until the battery is recharged.