RunYourCarOnWater_page_93

RunYourCarOnWater | page 93 | https://thedailydialectics.com/pdfs/RunYourCarOnWater/RunYourCarOnWater.pdf

28. Connect the oscilloscope lead to pin 3 of the NE555 controller. Verify that square wave frequency changes as the oscillator 2K pot is rotated. If the frequency changes, go to step 29. If the frequency does not change, a component is defective and must be replaced. After replacing the component,…