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    Blocking Oscillator

    this is the voltage tester that I used to test the CDI that I built a long time ago. The neon lites fire at 90 volts. I got like 20 for a dollar from poly packs years ago. Ha ha My CDI lit the last neon which is 10,000 volts. It may have even been15,000 volts, because the transformer put out 60...
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    Blocking Oscillator

    To me 8000 RPM is very high. But to you it is not. See the humor? And where did I indicate that building a CDI was easy? And I did build one before and it put out 10,000 volts but it used points to trigger, but I lost the circuit diagram. I will try to build your oscilator circuit tomorrow if...
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    Blocking Oscillator

    I tried to post a picture of my voltage tester but couldn't. What's wrong?
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    Blocking Oscillator

    I measured the voltage on my Toyota pickup. It was 3000 volts. So 3000/12=250. 250X400=100000V!!!!! I think that spark would jump an inch gap! My voltage tester only goes to10,000 v.
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    Blocking Oscillator

    Thanks for that circuit. Winding transformers is a lot of work. I see you used feedback from a second primary winding. That's a good idea. Only 7000 to 8000 RPM!!! Ha ha
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    Blocking Oscillator

    I looked up the PUT circuits and they are simular. https://circuitswiring.com/category/oscillator-circuits/
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    Blocking Oscillator

    I am transforming 12v to 120 v. I used a 3055 for the second transistor. It worked very well but I lost my old circuit diagram and that is the closest oscillator that I could find. The frequency should be around 60 Hz because it is a 60 cycle transformer, but it doesn't have to be exact. I will...
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    Blocking Oscillator

    I used to have a circuit for a blocking oscilator that I used to change 12v to120 with a transformer,but I lost it. This is the closest circuit that I could find. I have tried different values of resister and capacitor to resonate with the transformer but I can't get it to go. Can someone...
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    Gas station skimmers

    I was trying to learn how to not get my debit card information stolen and I ran across this article. It's a lot beyond my knowledge level but I thought it might be of interest to some others that understand PICs. https://learn.sparkfun.com/tutorials/gas-pump-skimmers/all
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    Nerve/Brain/Muscle spike sensing

    Will they soon make computers so small that they can be implanted into your brain?
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    Nerve/Brain/Muscle spike sensing

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    A few questions on small dual battery solar

    I use car batteries for solar power. They work fine but don't last as long as deep cycle batteries. If your batteries were boiling, something is wrong with your voltage regulator.
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    AC Measurement Question

    Are you sure you have the pins connected right...
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    Low voltage indicator lamp of 110vac circuit

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    Low voltage indicator lamp of 110vac circuit

    I use a 20K ohm resister and a LED between the switched line and neutral. Use a smaller resistor if LED too dim.
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    How does a Battery management board work?

    You show external mosfets in your simplified circuit. So are the mosfets in the IC that do the same thing? And maybe there is a mosfet at the negative of each battery? There is also a resistor at the negative of the whole battery pack that would let the batteries charge with no control that I...
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    How does a Battery management board work?

    That explains a lot. Will the batteries explode or catch fire if they become unbalanced?
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    How does a Battery management board work?

    Why do the voltages of the batteries have to be the same?
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    Homemade Multi-Drill

    Harbor Freight has a little rotary drill grinder that has a 12v transformer and also has three different size cottlets for less than 10 dollars. That would be perfect for you. Maybe you could hook two of the transformers in series if you only have 240v service.
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    Designing a Battery Backup for a security system

    Looks good to me.
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