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  1. Jimbo bob

    Running high current electric solenoid using a H-bridge

    Hi there:), Thanks for the reply:D. Here are some examples that I had in mind down below, but for now, I will only try to get the system working and later work on making it "smart" in finding the neutral. So, I will not need to worry about the gear sensor feedback just yet. There are off the...
  2. Jimbo bob

    Running high current electric solenoid using a H-bridge

    Hi, I apologize for sounding all over the place:eek:. Please let me know if it is still unclear what I am trying to do by the end of this post.:) No. The engine of interest is a Yamaha R6 600cc engine which is off of a motorcycle. I do not know the make, model and the year of the motorcycle...
  3. Jimbo bob

    Running high current electric solenoid using a H-bridge

    Based on what I have understood from what you and @hevans1944 have talked about is that if I am going to be using a single coil solenoid, I have to use a closed-loop feedback system and a sensor (i.e. like a servo motor) if I want the piston to move to a particular position. However, if I only...
  4. Jimbo bob

    Running high current electric solenoid using a H-bridge

    Hi @hevans1944, I did post this link earlier, but I was not sure whether you did have a look at it or not. Nonetheless, I found it interesting because it is relevant to what you mentioned about having a single solenoid and another magnet. It also does mention using PWM to control the solenoid's...
  5. Jimbo bob

    Running high current electric solenoid using a H-bridge

    @hevans1944 Wow:)! This is a very thorough response:D!! Thank you very much for that. I think I understand what you are talking about and how a single solenoid case could become quite tricky to control. @GPG That is a good point and thanks for bringing it up:).
  6. Jimbo bob

    Running high current electric solenoid using a H-bridge

    Sure thing. That is a good advice. Nonetheless, the people who made the video are indeed using the Kliktronic "control box" and solenoid. Kiliktronic people are selling the control box and the solenoid and a few other items as a kit. They maybe rightfully hesitant about sharing that sort of...
  7. Jimbo bob

    Running high current electric solenoid using a H-bridge

    You raise an interesting point. In this instance (i.e. shifting the gear) I want the solenoid to reach a certain length threshold (i.e. half-shift), but that would be enough for shifting the gear. I doubt that I would require it to stay in that position, but only reach it and shift the gear. I...
  8. Jimbo bob

    Running high current electric solenoid using a H-bridge

    Thanks for your thorough reply:D. It makes more sense to me now and I see that there will not be necessarily any need for a H-bridge, since there are two separate coils and two MOSFETs should do the job. Then using a PWM pulse to the MOSFETs I need to find the desirable position that I would...
  9. Jimbo bob

    Running high current electric solenoid using a H-bridge

    Yes. That makes sense. I am pretty sure this one is because in their website they show that they use it for shifting gears electronically in motor bikes to help disabled individuals. So it has to be able to both pull and push to up-shift and down-shift gears.
  10. Jimbo bob

    Running high current electric solenoid using a H-bridge

    Hi hevans1944 :), Hmmm....I wonder why not? I was hoping by reversing the current's direction through the H-bridge reverse the direction of the motion of the solenoid (i.e. switch between push and pull), the same way the direction of motion of a motor connected to a H-bridge changes. Also here...
  11. Jimbo bob

    Running high current electric solenoid using a H-bridge

    Hi dear enthusiasts:D, I am planning to run a push/pull 21 lb force electric solenoid. It takes an input of 12 V and demands around 35 Amps (instantaneous I believe) to move between pushed and pull positions. I am planning to run it using a H-bridge with PWM capability. I am hoping to use the...
  12. Jimbo bob

    Servo motor acting strange?

    Cheers!!:) I am going to try to change the potentiometer and the worn out bits, hopefully it works:D
  13. Jimbo bob

    Servo motor acting strange?

    Also I forgot to mention that I transposed the black and white, because based on one of the circuit diagrams that I found (which I have linked) I thought the wires should be connected other way around (Although it is counter intuitive). But the point is that did not make any difference in...
  14. Jimbo bob

    Servo motor acting strange?

    I see. The thing is I am not really sure that the reason it does not work is reversing the brown, orange and red wires. How can I confirm whether that is the issue? They may be in the right position. Ha Ha :D. I have no idea about the green wire. It was there to begin with. Probably they ran out...
  15. Jimbo bob

    Servo motor acting strange?

    Hi dear enthusiasts, I recently bought a PS-050 servo motor. It has a lot of torque. Due to some accidents, the wiring that go to the potentiometer and from there to the circuit board (the green, black and white wires) were ripped apart. Moreover, the orange, brown and red wires may also have...
  16. Jimbo bob

    Mixing up AC and DC speakers!!

    Thank you.
  17. Jimbo bob

    Mixing up AC and DC speakers!!

    Thank you Harald:). So, if I connect an AC power supply to the amplifier, I would fry it, correct? What about other DC appliances? Are there cases where I can (by accident) connect AC power to a DC device and it keep functioning? If the answer is yes, but there will be some abnormal...
  18. Jimbo bob

    Mixing up AC and DC speakers!!

    Hi everyone:), An interesting thing happened the other day. A friend of mine brought a pair of new speakers to me and let me know that “the speakers have fried”. I let him know that the “frying” smell is probably from his AC adapter because it had a voltage rating of “110V AC at 60Hz” as an...
  19. Jimbo bob

    Sanity check regarding an ADC chip

    Wow!!! Harald you are a saviour:).This makes a lot of sense. What I seem to be repeatedly doing is confusing my basic circuitry understanding and misinterpreting information:rolleyes:. I overlooked the fact that even though the bridge output can be negative in cases, but the actual leads coming...
  20. Jimbo bob

    Sanity check regarding an ADC chip

    Dear enthusiasts:), I am planning to work with a AD7730 ADC. On the page 24 of the datasheet you can read the following (and please by all means have a look if you see necessary): More over.... I have also attached a schematic of what I am planning to put together. My problem is that a...
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