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I have a led chaser i built from a youtube video. It works perfectly from a 9v battery but when i connect it to a 9v 1a power adapter it malfunctions. The leds blink out of sequence and some just flicker. If left long enough it burns out the 4017 ic. The 4017 is triggered by a 555 ic and it appears to keep working. |
October 29, 2024 |
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It could be a bad quality power adapter or 1a is too much for this circuit |
by Lionsio November 02, 2024 |
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Ok, thanks. I will keep it in mind. |
by ErnestThornton November 03, 2024 |
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The full scale amps 1A of the power supply is not the problem, the led chaser it takes the current that needs, hope less than 1 A. One probable cause is the ripple of the power supply, place a condensator in parallel to the power supply 470 uF 25Vl or 1000 uF 25 Vl. |
by adert November 06, 2024 |
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The 555 IC is very prone to burning out I lost $100 on this IC slope game |
by dominica November 13, 2024 |
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