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How to connect the trigger out instead of the switch? Like a toggle switch. The first trigger out activates the relay and remains ON infinity, the second trigger out deactivates the relay and remains OFF infinity.enter image description here

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  • \$\begingroup\$ Where did this circuit come from? What do you mean by 'trigger out'? \$\endgroup\$ Commented Jan 23, 2022 at 19:20
  • \$\begingroup\$ @BruceAbbott I found circuit from here: circuits-projects.blogspot.com/2012/08/… When the NE555 OUT is high then the trigger is activated. \$\endgroup\$ Commented Jan 23, 2022 at 19:37
  • \$\begingroup\$ the easy way is to use a 1/2 of dual "D" FF with feedback from Qbar to D input and R pull down and C to switch to V+ \$\endgroup\$
    – D.A.S.
    Commented Jan 23, 2022 at 20:48
  • \$\begingroup\$ It's also called a divide by two circuit \$\endgroup\$
    – D.A.S.
    Commented Jan 23, 2022 at 20:56

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