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Thread: Currently working on Bedini Beginner

  1. #11
    Hi,

    I hooked everything up the way as the circuit shown in the Bedini beginner guide, I spun the wheel but the wheel did not rotate continuously and eventually stopped, is there a way to check if the circuit is functioning properly and troubleshoot it? I tried reducing the resistance from 470 ohm to 120 ohm but it still did not work. We did the circuit with the 7 resistors, transistors and 14 diodes.

  2. #12
    Quote Originally Posted by Bradley Malone View Post
    So as the machine speeds up you will increase the resistance to bring the level back to "just enough" to trigger. This is why the efficiency goes up. The faster the wheel is going the less it draws....kind of.
    What does this mean, can you explain more on this?

  3. #13
    Networking Architect Aaron Murakami's Avatar
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    Quote Originally Posted by bedinistarter View Post
    Hi,

    I hooked everything up the way as the circuit shown in the Bedini beginner guide, I spun the wheel but the wheel did not rotate continuously and eventually stopped, is there a way to check if the circuit is functioning properly and troubleshoot it? I tried reducing the resistance from 470 ohm to 120 ohm but it still did not work. We did the circuit with the 7 resistors, transistors and 14 diodes.
    Can you show some good quality close up pics of the circuit?
    Aaron Murakami





    You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete. ― Richard Buckminster Fuller

  4. #14
    Okay, I will get a better and clearer picture tomorrow. At the meantime is there anything basic I can do to troubleshoot? For the power battery, can I use a 12 V 5Ah sealed lead acid battery? If everything is hooked correctly, could it be the circuit components that are faulty?

  5. #15
    Quote Originally Posted by Aaron Murakami View Post
    Can you show some good quality close up pics of the circuit?
    Hi, Here I have better pictures and labels, they're not connected to the batteries as it will be harder to take a picture. I think everything should be wired up correctly, but it still doesn't work. The wheel does not spin continuously. The battery I used is 12V 5Ah, does the Ah rating matter? To my understanding Ah just means that in an hour the battery can supply 5A of current.

    WhatsApp Image 2019-03-26 at 12.21.27 PM (3).jpg WhatsApp Image 2019-03-26 at 12.21.27 PM (2).jpg WhatsApp Image 2019-03-26 at 12.21.27 PM (1).jpg WhatsApp Image 2019-03-26 at 12.21.27 PM.jpg

  6. #16
    Where is connected other end of trigger winding? It should go to the same spot as your primary negative.

  7. #17
    It is connected to the negative of the input battery. We didn't connect those in the pictures because it looked really messy and hard to get a clear picture of the circuit. I think we have the set up right, but not sure why it is not working. Is there any suggestions you can give for us to troubleshoot? We tried changing the 470 to 120 resistors and it still did not work
    Last edited by bedinistarter; 03-26-2019 at 12:17 PM.

  8. #18
    I will attempt to explain better. When the magnet is passing by the coil at low rpm, the change in magnetism is slow and takes longer. When it is slow the voltage induced into the trigger is low. As you increase the speed of the magnet passing the core the magnetic change is the same but it happens faster so the voltage induced into the trigger will be higher.

    When you initially start the wheel by hand, the magnet induces a "low" voltage. When the resistance of the path to the base of the transistor is low enough for THAT voltage....the transistor will turn on. If this happens and the transistors turn on enough to run the machine, it will begin to speed up.

    What happens when the machine speeds up is the voltage in the trigger will raise higher and higher as the speed increases.

    With the sg machine you want the transistor to turn on "just enough" to kick the magnet away.

    If you have a low base resistance, the transistor will turn on at lower speeds but will stay on longer or pulse multiple times. If the resistance is high then you have to spin the wheel very fast to get the transistor to turn on.

  9. #19
    Quote Originally Posted by Bradley Malone View Post
    I will attempt to explain better. When the magnet is passing by the coil at low rpm, the change in magnetism is slow and takes longer. When it is slow the voltage induced into the trigger is low. As you increase the speed of the magnet passing the core the magnetic change is the same but it happens faster so the voltage induced into the trigger will be higher.

    When you initially start the wheel by hand, the magnet induces a "low" voltage. When the resistance of the path to the base of the transistor is low enough for THAT voltage....the transistor will turn on. If this happens and the transistors turn on enough to run the machine, it will begin to speed up.

    What happens when the machine speeds up is the voltage in the trigger will raise higher and higher as the speed increases.

    With the sg machine you want the transistor to turn on "just enough" to kick the magnet away.

    If you have a low base resistance, the transistor will turn on at lower speeds but will stay on longer or pulse multiple times. If the resistance is high then you have to spin the wheel very fast to get the transistor to turn on.

    Thank you so much for explaining. I think I get it now. We have been spinning it with a low starting speed, maybe that might be the reason as why the transistor is not turned on. I will try and update back here! I appreciate your time and knowledge.

    Did you by any chance looked at the pictures of my circuit. Everything seems like its well connected. I just want to make sure that the circuit is connected right so that I can rule that out as a mistake and troubleshoot other aspects.
    Last edited by bedinistarter; 03-26-2019 at 02:50 PM. Reason: have not finish my explanation

  10. #20
    Hi all,

    This is an updated circuit with the battery all connected and labelled, more close up of the circuit is in the previous post where I attached the the close up of the circuit with labels.

    Today while we were testing, the NEON bulb light up, but my question is, are all of them suppose to light up at once or sequentially because not all of them light up.

    WhatsApp Image 2019-03-28 at 10.39.41 AM.jpg

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