Switch protecting circuit

The utility model relates to a switch protecting circuit, which consists of a resistor R1, a resistor R2, a diode D1, a diode D2, a thyristor Q, a switch S and a connecting line. When alternating current voltage is input from the input end IN; the end B of the input end is connected with the diode D...

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Bibliographic Details
Main Author XIANG QINGSONG
Format Patent
LanguageChinese
English
Published 16.11.2011
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
GENERATION
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Summary:The utility model relates to a switch protecting circuit, which consists of a resistor R1, a resistor R2, a diode D1, a diode D2, a thyristor Q, a switch S and a connecting line. When alternating current voltage is input from the input end IN; the end B of the input end is connected with the diode D1 in series to form a rectifier circuit; the input end and the output end share the common end A; the switch S is connected with the resistor R1 in series and then is connected with the diode D1 and the thyristor Q in parallel; a control electrode of the thyristor Q is connected with the switch S and one pin of the resistor R1 in series; and the resistor R2 and the diode D2 are connected in series and then are connected onto the end A and the end C of the output end OUT in parallel. By adopting the switch protecting circuit, when a light-touch switch S is pressed down, the control electrode of the thyristor Q acquires trigger current, so that an anode and a cathode of the thyristor Q are quickly conducted, transien
Bibliography:Application Number: CN20112101476U