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Type: Posts; User: deepak4you

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  1. Closed: Re: ADE7763 line voltage and current detection

    Here's the code and the output. I made a new clean ADE board and that is also giving the same trouble. After the first few readings, the Irms and Vrms values are reported the same. This, without any...
  2. Closed: Re: ADE7763 line voltage and current detection

    My apologies @wwfeldman, and thanks for your reply as well. I indeed forgot to upload the schematic. Same is attached now.151649

    I am indeed using the board for AC power measurement. Infact we're...
  3. Closed: ADE7763 line voltage and current detection

    Hello Experts!

    Calling out for help again while I'm in difficulty.

    I'm working on a power meter setup using the ADE7763 and finding it difficult to get the correct Vrms, Vpeak, Irms, Ipeak...
  4. Closed: Re: Physical placement of MAX30205 based body temperature sensor

    I suspect there's a thermal conductive adhesive on the Protocentral breakout board.

    I did read that the EP has to be connected to ground. That being the case, I might as well solder a metal plate...
  5. Closed: Physical placement of MAX30205 based body temperature sensor

    Hello there,

    I'm working on a PoC prototype for a human/animal body temperature measurement system as an IoT solution. After some research, I see that the MAX30205 is an excellent choice for human...
  6. Closed: Re: Low voltage drop high current unidirectional diode/circuit

    @KlausST - I'll try with the diode anyway as a start to simplify things and assess the impact.

    @dick_freebird - output of the controller is unregulated and not fix whereas the battery is an LFP...
  7. Closed: Re: Low voltage drop high current unidirectional diode/circuit

    @KlausST - forgot to mention that the operating range is just about 42-52V. So 0.7V is also still 7%. That's a lot of juice wasted in an e-bike situation, hence trying to find the most optimised...
  8. Closed: Low voltage drop high current unidirectional diode/circuit

    Experts!

    Need help in continuation of a circuit I was working on, for which I had great inputs from the community. This was the original post:
    ...
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    Closed: Re: Inertia of Brushless DC Motor

    Thanks @KlausST and @c_mitra for clarifying. Things seem to be a little clearer now. I'll take it from here and continue with my design. I have to admit that this forum has helped me lot more than...
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    Closed: Re: Inertia of Brushless DC Motor

    Thanks @KlausST for clarification.

    So to put it differently, how can I determine/compute probably from the specs or some other parameters, how much minimum current needs to be supplied to a motor...
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    Closed: Inertia of Brushless DC Motor

    Experts! My sincere apologies if this post is misplaced for this category. I didn't find any other appropriate one to post it in.

    My understanding of Motors - AC or DC, Brushed or Brushless - is...
  12. Closed: Re: Two input power sources for buck-boost converter

    Very right and fundamental @BradtheRad. Thanks for your inputs. Might be I can build a MOSFET switch to switch between two alternators. I've had my share of grief building such MOSFET switches (have...
  13. Closed: Re: Two input power sources for buck-boost converter

    I think there has to be a diode across + and - terminals of each alternator output before the same is fed to the buck/boost converter.

    Any ideas?
  14. Closed: Two input power sources for buck-boost converter

    Another shout for help to the experts.

    What I have:
    1. Two machines driven by two ICE Engines. Both have onboard alternators that is used for ignition and charging the battery as in any vehicle....
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    Closed: Re: MOSFET switchover for E-Bike controller

    The buck/boost doesn't have an enable input.

    The theory about body diode conducing in reverse during freewheeling is compelling indeed. My head has been hurting for the last couple of months. I...
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    Closed: Re: MOSFET switchover for E-Bike controller

    I suspect that even if we remove the PMOS on the charge side before the buck/boost, and add an NMOS instead in between ground and buck/boost, it will still not work? I don't like the idea of keeping...
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    Closed: Re: MOSFET switchover for E-Bike controller

    The issue with body diode of M3 is something that I was already worried about. I think I'll remove the diode from the Charge path and put it before M3 Source pin. That should ensure that...
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    Closed: Re: MOSFET switchover for E-Bike controller

    Ohh yes, sorry. Forgot to answer that. The + is the connection polarity, indicating that it has to be connected to the + of battery. AND, while freewheeling, the voltage that comes out of the same...
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    Closed: Re: MOSFET switchover for E-Bike controller

    The motor is rated 1000W, so the current draw is anywhere between 18-22 Amps DC depending on battery voltage.

    12V is coming from the existing petrol bike on which i'm adding the e-bike motor
    ...
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    Closed: Re: MOSFET switchover for E-Bike controller

    Thanks a ton @d123 for your efforts. I've already started looking for high current DC relays. I'll also continue to see if anything from your schematic can help me get what I'm looking for. Thanks...
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    Closed: Re: MOSFET switchover for E-Bike controller

    Looks like physical isolation/switching is the only way out :(
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    Closed: Re: MOSFET switchover for E-Bike controller

    Could I not possibly replace the discharge side MOSFET with an IGBT? Or possibly both MOSFETs with an IGBT? Would that not do the trick?
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    Closed: Re: MOSFET switchover for E-Bike controller

    Thanks @KlausST. The controller is basically a PWM controller for the BLDC motor of the e-bike along with some other electronics inside. I don't think there's anything special in there that would...
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    Closed: Re: MOSFET switchover for E-Bike controller

    I changed the ckt to use one N-channel and one P-channel MOSFET, but I still don't think this will work. Look at S2. This part has to be isolated during the charge (green) cycle. So effectively we...
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    Closed: Re: MOSFET switchover for E-Bike controller

    @KlausST - you mean to say that effectively since the source is floating, hence it is wrong?

    @d123 - thanks for your efforts! Output at V5 is what I am seeing now. I'm thinking if a P-channel and...
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