Other

Li-Chih Chang

Yi-Chun Sung

Tai-Hwa Liu

Cheng-Lun Yin

A radio frequency identification automatic detecting system with an antenna net includes a radio frequency identification module, an enhancing surface wave-guide coaxial cable structure including a coaxial cable having at least one aperture region without an outer conducting layer, a receiving apparatus having a plurality of receiving spaces and a plurality of extension wires disposed adjacent to the receiving spaces and coupled or connected to the outer conducting layer of the coaxial cable. The electromagnetic field is formed in nearby regions adjacent to the receiving spaces because the electromagnetic wave caused by the current generated from the radio frequency identification module is transmitted by the outer conducting layer and extension wires. The radio frequency identification electronic tag on the object is triggered automatically when the object is moved toward or moved out from the respective receiving space such that the automatic detecting effect is achieved.

Radio frequency identification automatic detecting system with antenna net

A power supply with adjustable outputted voltage includes an AC power input processing circuit and a DC power input processing circuit. The AC power input processing circuit has at least one voltage adjuster that is electrically connected with the DC power input processing circuit for adjusting the outputted voltage. The DC power input processing circuit includes a current sensor, a DC/DC converter, a ripple filter, and a DC/DC self-drive switch. When an extremely large inputted current is detected by the current sensor and the DC/DC converter stops actions, the DC/DC self-drive switch is turned off to protect the circuit.

Power supply with adjustable outputted voltage

A power supply with adjustable outputted voltage includes a casing, a circuit board, a voltage-adjusting knob and a rotary wheel. The casing is provided thereon with a window, and the circuit board is disposed in the casing. The circuit board is electrically connected to AC/DC power input processing circuit in which only AC (or DC) exists or both AC and DC exist simultaneously. The voltage-adjusting knob is electrically connected on the circuit board. The rotary wheel is provided thereon with a plurality of voltage-adjusting numerals. The voltage-adjusting numerals are located to correspond to the window of the casing and are displayed in the window.

Growing community of inventors

Hsinchu, Taiwan

Li-Chih Chang