- Top left switch power on / off
- Bottom right button discharge load capacitor
- RC network on comparator (-) input controls timing. (+) Input is set such that RC product is approximately the delay time (1 time constant)
- Timing parameters ( Main AC voltage and frequency, Big Load RC, and comperator timing RC) scaled down by ~10 to be shown properly in the app
- AC relay is only for simulation. Actually main switch turns on mains AC which powers 12V supply for logic circuit
- NMOS is IRLZ44N
- On switch on 555 latch gets reset from RC pulse on threshold pin (Several times in reality due to bouncing effect)
- On soft start delay end, delay timing capacitor gets discharged via BJT
