Intuitive electronic circuit

摘要

An apparatus according to various embodiments may detect the state of an external switch (14). An apparatus (1000) according to various embodiments may activate or deactivate an appliance based on the state of the external switch (14). An apparatus according to various embodiments may activate or deactivate an appliance based on the state of the external switch (14), even in the absence of grid power (3).

主权项

1. An apparatus comprising:
an electrical interface; a signal source operable to output a reference signal via the electrical interface, in which the reference signal is a direct current (DC) signal; a first light source; and a logic circuit operable to:
receive, via the electrical interface a first signal indicative of a response to the reference signal;determine a second signal based on the first signal, in which, in determining the second signal, the logic circuit is operable to:
measure the voltage differential across a resistive element of the signal source;determine a first value of the second signal if the measured voltage differential is zero, in which the first value of the second signal is a value that instructs the light source to not emit light; anddetermine a second value of the second signal if the measured voltage differential is non-zero, in which the second value of the second signal is a value that instructs the light source to emit light; and transmit the second signal to the first light source.