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  1. M

    12V DC Power source for prototyping

    Hi, would like to here some thoughts on using a power source. I am needing 12 VDC source for some of my prototyping. I have an old desktop pc that I am stripping parts from and decided to pull the power supply. I just wanted to make sure I am going about this the correct way in getting the 12V...
  2. M

    free cloud or open source schematic tool

    Looking for a free or open source schematic tools. Notice a few cloud based tools but they have subscriptions. What are some recommendations? thanks
  3. M

    LED Strips Display driven from 555 / 4017 counter

    Hi All, I am expanding my knowledge from 555 timers to something that is more interesting to look at ( also to get my kids more interested ). I am looking at leveraging a 4017 counter using a 555. I would like this to drive a LED strip ( 12v 2A ). The strip is 300 LED but will most likely use...
  4. M

    Question in 555 timer circuit

    Hi, I assume this might be a fundamental concept so hopefully I will understand with a brief explanation. I would like some more understanding of how the comparator works on pin 6 in the below schematic. The comparator on pin 6 will 'read' the voltage on the C1. I understand when C1 gets to a...
  5. M

    back into electronics as a hobby

    HI all, My name is Mick. From the time I was 8, I have always been fascinated with electronics. I started out with the Radio Shack 50 in 1, 160 in 1 and 200 in 1 projects sets growing up. Was always fun to follow the instructions but never did really understand the theory. I ended up...
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