AC ELECTRONIC SWITCH

• Main Author: KOVACHEV, DIMITAR M
• Format: Patent
• Language: English
• Published: 30.09.1997
• Edition: 6
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; PULSE TECHNIQUE

The switch is used for switching of electric lamps, heating elements and others. It is connected in series in the AC circuit of the load and performs the switching by directly applied (across a wire) or wireless remote transmitted control pulses. The switch has a power electronic element (1) switching the load circuit parallel to which a rectifier with alternating internal resistance (2) is connected rectifying part of the voltage on elements (1). The thus rectified voltage is used as input for the circuit (3) controlling the switching of the power element connented between the rectifier and the control output of the power element. When there is a supplied signal for off position in input D which controls the state of the entire DC electronic switch, rectifier (2) has high internal resistance due to which the voltage produced by it is sufficient to maintain the operation of the AC electronic switch receiving the control signals supplied to input D but the control circuit (3) does not enable the power electronic switch (1) to be switched on. When a swith-on signal is supplied to input D, the internal resistance of rectifier (2) is small and circuit (3) siwtches on the element (1). USEFUL MODELS