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  1. Simple Delay Timer Circuits Explained - Homemade Circuit

  2. The RC Delay Element - Build Electronic Circuits

  3. Time Delay Circuit Using 555 Timer

  4. Time Delay Circuit with Capacitors, Transistors & Resistors - Arrow

  5. TIME DELAY SWITCH CIRCUIT : 15 Steps (with Pictures) - Instructables

  6. A Simple Time Delay Circuit : 3 Steps (with Pictures) - Instructables

  7. Time Delay Circuit Using 555 Timer - Electronics Project Design

  8. Simple Time Delay Circuit: Tutorial with Transistors

  9. How to make Time Delay Circuit Using 555 Timer

  10. Simple Time Delay Circuit using 555 Timer - Circuit Digest