Ne555 Dc 12V Delay Relay Shield โล่สวิตช์รีเลย์ตั้งเวลา 0 To 10S โมดูลรีเลย์

Description: 1. Size: 6.8CM*2.1CM 2. Main chip: NE555 3. Working voltage: DC 12V 4. Features: 1. Turn on the power relay to delay the closing. Specifically: after supplying 12v power to the relay, the relay will not immediately absorb and the status of the relay output terminal is: normally open and public disconnect, normally closed and public conduct; after the delay 1-10s (adjustable), the relay At this time, the state of the relay output terminal is: normally open and public conduction, normally closed and public disconnection; as long as the module is continuously powered, this state will always be maintained. 2. The delay time is adjustable, (0～10 seconds) 4. Increasing the potentiometer can increase the delay time 5. Increasing the capacitor C1 can increase the delay time 6. With input power indicator 7. With relay pull-in indicator 8. It can control AC 220V/10A lower equipment. (Control equipment 2000W) 9. With relay freewheeling protection. 10. Delay time formula: T=1.1RC. For example: capacitance 100uf resistance 100K T=1.1*100000*0.0001=11 seconds 【Applications】 1. Delayed connection of on-board equipment to prevent excessive current from burning down on-board equipment when the car is on fire. 2. Where there is a need for sequential start, prevent multiple devices from starting at the same time and the electric current is too large to burn the electrical appliances.