Abstract: Used dry cell batteries having a terminal voltage less than a working voltage of a previously applied device but higher than an exhaustion voltage below which the dry cell batteries stop discharging can be used in a present provided discharging system. The used dry cell batteries are connected in series. The discharging system also includes a discharging unit, a measuring unit, a judging unit, and an indicating unit. The discharging unit discharges the used dry cell batteries. The measuring unit measures the terminal voltage of each dry cell battery. The judging unit judges if the terminal voltage of each dry cell battery is less than a preset voltage below which the dry cell battery is deemed to be exhausted. The indicating unit indicates which dry cell battery has the terminal voltage less than the preset value for replacement.

Abstract: A restart circuit includes a voltage input terminal, a diode, an electronic switch, a restart signal output terminal, and a timing chip. The voltage input terminal is connected to an anode of the diode. A cathode of the diode is connected to a power pin and a reset pin of the chip and connected to a trigger pin of the chip through a resistor. A trigger pin of the chip is grounded through a capacitor. A count pin of the chip is grounded through a capacitor. A discharge pin and a threshold pin of the chip are connected and grounded through a resistor and a capacitor in that order. An output pin of the chip is connected to a control terminal of the switch. A first terminal of the switch is grounded. A second terminal of the switch is connected to the restart signal output terminal.

Abstract: A restart circuit includes a voltage input terminal, a diode, an electronic switch, a restart signal output terminal, and a timing chip. The voltage input terminal is connected to an anode of the diode. A cathode of the diode is connected to a power pin and a reset pin of the chip and connected to a trigger pin of the chip through a resistor. A trigger pin of the chip is grounded through a capacitor. A count pin of the chip is grounded through a capacitor. A discharge pin and a threshold pin of the chip are connected and grounded through a resistor and a capacitor in that order. An output pin of the chip is connected to a control terminal of the switch. A first terminal of the switch is grounded. A second terminal of the switch is connected to the restart signal output terminal.

Abstract: A power control circuit includes a switch circuit, a current sampling circuit, a controller, and a standby power circuit. The switch circuit is connected to an alternating current (AC) power source and an electronic device. The sampling circuit is used to sample a current of a line of the AC power source. The controller is used to determine whether the sampled current is within a predetermined range, and turn off the switch circuit if the sampled current is within a predetermined range to disconnect the electronic device from the AC power source.

Abstract: An air duct includes a cover and two adjusting pieces. The cover includes a top board and two end boards extending downwards from two opposite ends of the top board. The cover defines an air outlet in a front of the cover and an air intake in a rear of the cover. Two adjusting pieces are slantingly extended from rear ends of the two side boards toward the air outlet.

Abstract: Used dry cell batteries having a terminal voltage less than a working voltage of a previously applied device but higher than an exhaustion voltage below which the dry cell batteries stop discharging can be used in a present provided discharging system. The used dry cell batteries are connected in series. The discharging system also includes a discharging unit, a measuring unit, a judging unit, and an indicating unit. The discharging unit discharges the used dry cell batteries. The measuring unit measures the terminal voltage of each dry cell battery. The judging unit judges if the terminal voltage of each dry cell battery is less than a preset voltage below which the dry cell battery is deemed to be exhausted. The indicating unit indicates which dry cell battery has the terminal voltage less than the preset value for replacement.

Abstract: A coded entry controlled device can power on a computer. A control circuit receives a power on coded entry via a keyboard and compares the input power on coded entry with an entry pre-stored in a storage circuit. The microcontroller actuates a switch circuit to power on the computer in response to a correct entry.

Abstract: This invention provides a compound of the formula (I): ##STR1## and its pharmaceutically acceptable salts, wherein A.sup.1 and A.sup.2 are each halo; R.sup.1 and R.sup.2 are independently C.sub.1-4 alkyl; R.sup.3 is substituted or unsubstituted, phenyl or naphthyl; Y is heterocyclic group selected from C.sub.5-10 azacycloalkyl, C.sub.6-10 diazacycloalkyl, C.sub.7-10 azabicycloalkyl and the like; and R.sup.4 is selected from (a) substituted or unsubstituted C.sub.1-8 alkyll; (b) substituted or unsubstituted amino; (c) substituted or unsubstituted C.sub.2-6 alkanoyl; (d) substituted or unsubstituted C.sub.3-8 cycloalkyl or C.sub.7-14 bicycloalkyl; (e) substituted or unsubstituted C.sub.5-10 azacycloalkyl or C.sub.6-10 diazacycloalkyl, and (f) substituted or unsubstituted C.sub.7-14 mono- or di-azabicycloalkyl. These compounds are useful for the treatment of medical conditions caused by bradykinin such as inflammation, cardiovascular disease, pain, etc.