Abstract: A power supply assembly is disclosed comprising a power supply unit adapted to provide power to a user's device in accordance with power requirements of the user's device, a power connection control unit and an AC controllable switch, configured to connect and disconnect AC power source from the power supply unit in response to respective control provided by the power connection control unit, wherein the power connection control unit and the AC controllable switch are configured to maintain one of two states without consuming electrical power, wherein the two states of the power connection control unit are set state adapted to switch on the AC controllable switch and unset state adapted to switch off the AC controllable switch and wherein when the power supply assembly is in its unset state it is completely disconnected from the AC power source.

Abstract: A power supply assembly is disclosed comprising a power supply unit adapted to provide power to a user's device in accordance with power requirements of the user's device, a power connection control unit and an AC controllable switch, configured to connect and disconnect AC power source from the power supply unit in response to respective control provided by the power connection control unit, wherein the power connection control unit and the AC controllable switch are configured to maintain one of two states without consuming electrical power, wherein the two states of the power connection control unit are set state adapted to switch on the AC controllable switch and unset state adapted to switch off the AC controllable switch and wherein when the power supply assembly is in its unset state it is completely disconnected from the AC power source.

Abstract: A power supply assembly is disclosed comprising a power supply unit adapted to provide power to a user's device in accordance with power requirements of the user's device, a power connection control unit and an AC controllable switch, configured to connect and disconnect AC power source from the power supply unit in response to respective control provided by the power connection control unit, wherein the power connection control unit and the AC controllable switch are configured to maintain one of two states without consuming electrical power, wherein the two states of the power connection control unit are set state adapted to switch on the AC controllable switch and unset state adapted to switch off the AC controllable switch and wherein when the power supply assembly is in its unset state it is completely disconnected from the AC power source.

Abstract: The invention is directed to a percussion system to be attached to a stringed instrument in a way that allows a player to drum the percussion system while plucking the strings of the stringed instrument using a single hand. The percussion system includes a percussion device including: a body and at least one static percussion surface located over the body, the percussion surface having a batter side. The percussion system further includes a connecting element for connecting the percussion device to a stringed instrument such that when the percussion system is connected to the stringed instrument the percussion surface is substantially perpendicular to the stringed instrument's front side and is directed towards strings of the stringed instrument.

Abstract: The invention is directed to a percussion system to be attached to a stringed instrument in a way that allows a player to drum the percussion system while plucking the strings of the stringed instrument using a single hand. The percussion system includes a percussion device including: a body and at least one static percussion surface located over the body, the percussion surface having a batter side. The percussion system further includes a connecting element for connecting the percussion device to a stringed instrument such that when the percussion system is connected to the stringed instrument the percussion surface is substantially perpendicular to the stringed instrument's front side and is directed towards strings of the stringed instrument.