| 摘要 |
FIELD: physics, computer engineering.SUBSTANCE: invention relates to computer engineering and can be used in desktop computers. A relay for turning on a system block consists of a switching device in the form of a normally closed electromagnetic relay, wherein upon turning on the computer, the relay coil, connected through a current-limiting resistance, carries voltage and normally closed contacts, connected in parallel to the button for turning on the computer which is located on the front panel, are open, the relay has no effect on the operation of the computer, if the computer was turned off for any reason, the relay contacts close, thereby turning on the power supply unit of the computer and the relay, by closing the start-up circuit of the computer, the button S1, which is normally closed in the circuit, is designed to allow checking of manual switching from the start-up button on the front panel of the system block, upon pressing and holding of which the computer is turned on through the start-up button.EFFECT: enabling automatic switching of system blocks.1 dwg |
