Abstract: A control system for a wireless power switch without a NEUTRAL wire comprises a wireless controlled power switch with both terminals connected between a LINE wire and a switch wire of a switch box without the NEUTRAL wire; a power acquiring device having two power input terminals respectively connected to the LINE wire and the switch wire of the switch box; and a wireless automation control device receiving an output voltage of the power acquiring device as the required power, the wireless automation control device controlling open or close of the wireless controlled power switch according to wireless control signal wirelessly. Specifically, a load device is connected between the switch wire and the NEUTRAL wire, and impedance between the two power input terminals of the power acquiring device is substantially larger than impedance of the load device.

Abstract: A power harvesting switch circuit includes a main switch and a voltage extractor connected in series between Line wire and switch wire. The main switch includes a first power MOSFET and a second power MOSFET connected in series. The voltage extractor includes a first Zener diode and a second Zener diode connected in series but in opposite directions.

Abstract: A radio-frequency (RF) controlled switch box without using Neutral wire includes a relay, and an RF controlled circuit that receives an RF control signal to control open or closed state of the relay. The RF controlled circuit, the relay and a light-emitting diode (LED) light bulb are connected in series between Line wire and the Neutral wire. The RF controlled circuit includes a voltage clamper. When the relay is closed, mains voltage between the Line wire and the Neutral wire is distributed between the voltage clamper and the LED light bulb, such that the voltage clamper generates a clamped voltage and the LED light bulb turns on. When the relay is open, the RF controlled circuit takes power from a rechargeable battery.

Abstract: An alarm detector for use in an alarm detection system is provided. The alarm detector includes: a microphone, a processor, and a sensing circuit. The microphone is for detecting an incoming acoustic signal. The sensing circuit is for determining whether the incoming acoustic signal comprises a specific audible alarm, and awakening the processor into a working mode from a sleep mode upon determining the incoming acoustic signal comprises a specific audible alarm.

Abstract: A control system for a wireless power switch without a NEUTRAL wire comprises a wireless controlled power switch with both terminals connected between a LINE wire and a switch wire of a switch box without the NEUTRAL wire; a power acquiring device having two power input terminals respectively connected to the LINE wire and the switch wire of the switch box; and a wireless automation control device receiving an output voltage of the power acquiring device as the required power, the wireless automation control device controlling open or close of the wireless controlled power switch according to wireless control signal wirelessly. Specifically, a load device is connected between the switch wire and the NEUTRAL wire, and impedance between the two power input terminals of the power acquiring device is substantially larger than impedance of the load device.

Abstract: A valuable document receiving and alignment method includes the steps of (a) a user inserts a valuable document obliquely into a transversely tilted tunnel, (b) a validation unit of the valuable document receiver senses the inserted valuable document and controls a delivery mechanism to hold down the valuable document, (c) a sheet-deliver wheel module of the delivery mechanism delivers the valuable document forwardly to a predetermined distance and the user releases the hand from the valuable document, (d) the sheet-deliver wheel module releases the valuable document for enabling it to fall downwardly to the lower side wall of the transversely tilted tunnel and to let one side edge of the valuable document be abutted against the lower side wall, and (e) the sheet-deliver wheel module delivers the valuable document to a validation position for enabling the validation unit to identify the authenticity and value of the valuable document.

Abstract: A valuable document receiving and alignment method includes the steps of (a) a user inserts a valuable document obliquely into a transversely tilted tunnel, (b) a validation unit of the valuable document receiver senses the inserted valuable document and controls a delivery mechanism to hold down the valuable document, (c) a sheet-deliver wheel module of the delivery mechanism delivers the valuable document forwardly to a predetermined distance and the user releases the hand from the valuable document, (d) the sheet-deliver wheel module releases the valuable document for enabling it to fall downwardly to the lower side wall of the transversely tilted tunnel and to let one side edge of the valuable document be abutted against the lower side wall, and (e) the sheet-deliver wheel module delivers the valuable document to a validation position for enabling the validation unit to identify the authenticity and value of the valuable document.

Abstract: A coin detector includes an oscillator circuit using an oscillator for generating a magnetizing signal of a predetermined oscillation frequency and an eddy current sensor for producing an AC magnetic field for sensing the variation of the inductance of an eddy current produced upon passing of a coin, a FM demodulator and an AM demodulator respectively electrically coupled to the oscillator circuit by a respective buffer for demodulating the voltage frequency and voltage amplitude of the oscillation signal outputted by the oscillator circuit, and a recognition logic unit for computing the demodulated FM signal outputted by the FM demodulator and the demodulated AM signal outputted by the AM demodulator by means of using time as a parameter to recognize the authenticity and value of the sensed coin.

Abstract: An input device. The input device may be coupled to an electronic device. The input device comprises a control capable of being moved to n activation points to respectively activate input functions, wherein n is an integer larger than or equal to ten. When activated, the input functions respectively enable n digits to be input to the electronic device.

Abstract: An input device. The input device may be coupled to an electronic device. The input device comprises a control capable of being moved to n activation points to respectively activate input functions, wherein n is an integer larger than or equal to ten. When activated, the input functions respectively enable n digits to be input to the electronic device.