Car charger with cable and LED activated when devices are connected to connectors

A power sensing and indication device for charging devices, comprising:

• a controller for providing a charge to a device and having an input voltage port, a first output voltage port and a second output voltage port;
• and
• a power sensing and indication circuit including:
• a first device connector coupled to the first output voltage port and configured to charge a first device;
• a second device connector coupled to the second output voltage port and configured to charge a second device;
• an amplifier having an inverting input port, a non-inverting input port and an output port, the non-inverting input port of the amplifier being connected to the first device connector;
• a first plurality of photodiodes configured to emit light of a first color;
• a second plurality of photodiodes configured to emit light of a second color;
• and
• a transistor configured to cause the first plurality of photodiodes to emit light of the first color or the second plurality of photodiodes to emit light of the second color based on a comparison of a first voltage of the first device or a second voltage of the second device to a threshold voltage value that is a first voltage value based on a first control signal received when the first device is coupled to the first device connector and a second voltage value based on a second control signal received when the second device is coupled to the second device connector.

A power sensing and indication circuit, comprising:

• a first device connector coupled to a first output voltage port of a controller and configured to charge a first device that is coupled to the first device connector;
• a second device connector coupled to a second output voltage port of the controller and configured to charge a second device that is coupled to the second device connector;
• a first amplifier having an inverting input port;
• a non-inverting input port and an output port;
• the non-inverting input port of the first amplifier being connected to the first device connector;
• a first plurality of photodiodes configured to emit light of a first color;
• a second plurality of photodiodes configured to emit light of a second color;
• and
• at least one of a transistor or a digital circuit coupled to the first plurality of photodiodes and the second plurality of photodiodes and configured to cause the first plurality of photodiodes to emit light of the first color or the second plurality of photodiodes to emit light of the second color based on a comparison of a first voltage of the first device or a second voltage of the second device to a threshold voltage value that is approximately 12.1 mV based on a first control signal received from the first device being coupled to the first device connector or a second control signal received from the second device being coupled to the second device connector.