The delay principle of time relays

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Principle of delay in a time relay: When an input signal is applied or removed, the output section needs to wait for a specified period of time before closing or opening the relay that controls the corresponding circuit; such a relay is known as a time relay. A time relay that delays the action by slowing down the change in the magnetic field of an electromagnet when a signal is applied to the coil is called an electromagnetic time relay ； A time relay composed of electronic delay circuits made up of discrete components, or a time relay made up of solid-state delay circuits, is called an electronic time relay ； A time relay composed of an electronic or solid-state delay circuit and an electromagnetic relay is called a hybrid time relay. Their working principle is the same: power is applied to or removed from the coil of the time relay, and after the time you have set, it acts to control the connection and disconnection of the main circuit