NE555 12V DELAY MONOSTABLE SWITCH MODULE NA390

Description

NE555 12V DELAY MONOSTABLE SWITCH MODULE NA390

Power relay delay pull. Specifically : 12v power supply to the relay, the relay will not immediately sucked and status relay outputs are: normally open disconnected public, normally closed and public conduction; wait until the delay 1-10s (adjustable), the relay suction and, this time, the relay output status is: normally open and public conduction, normally closed and public disconnected; as long as Uninterrupted power module, this state will remain. The delay time formula : T = 1.1RC For example : with a 100K resistor and 100uf capacitor; T (Delay Time) = 1.1 x 100000 x 0.0001 = 11 seconds. The PCB color and relay make may vary based on availability Applications: 1. The delay of the on-board equipment is turned on to prevent the current from being too large to burn the vehicle equipment when the vehicle is on fire. 2. It is necessary to have a sequence to start, to prevent multiple devices from simultaneously starting the current and burning the appliance too much