Led chaser power issue SOLVED

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.

by Roger439
October 29, 2024
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4 Answers

Answer by Lionsio

It could be a bad quality power adapter or 1a is too much for this circuit

ACCEPTED +1 vote
by Lionsio
November 02, 2024
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Answer by ErnestThornton

Ok, thanks. I will keep it in mind.

+1 vote
by ErnestThornton
November 03, 2024
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Answer by adert

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.

+1 vote
by adert
November 06, 2024
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Answer by dominica

The 555 IC is very prone to burning out I lost $100 on this IC slope game

+1 vote
by dominica
13 hours, 46 minutes ago
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