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Recent content by Akanimo

  1. A

    Buck boost converter

    What is the maximum output current that you require from the 5V output?
  2. A

    LC circuit power transfer

    Hi, To be honest, your question is not very clear and we have only been trying to look for a way to squeeze out an answer for you, even when the question is not clear. In your fourth paragraph, you mentioned "efficient power transfer" and in your fifth paragraph you mentioned "alot of power"...
  3. A

    finding footprint of certain connector

    The connector actually looks like a JST-EH-9 connector. 1710230043 Take a look at 640457-9 at digikey website.
  4. A

    [SOLVED] Arrangement of isolated variable DC input

    As a practising engineering, you need to refer to a standard. You can take a look at IEC 61131-2:2017.
  5. A

    What's the difference between RAM and ROM with a coe files in Xilinx FPGA?

    Hi, In reality, it is either a memory has random access (RAM) capability or sequential access (SAM) capability. A ROM (read-only memories) can be either RAM or SAM depending on access capability. With the FPGA, the ROMs are random access memories that cannot be written to. What is called RAM in...
  6. A

    finding footprint of certain connector

    Was the female counterpart supplied with it? If yes, then can we see it?
  7. A

    Calculating Power Budget

    Leave headroom of at least 20%. The peak current is a bit too complicated to be immediately discussed here.
  8. A

    finding footprint of certain connector

    Please, retake this photograph. This time focus on the connector.
  9. A

    Calculating Power Budget

    Not Not really. You need to consider that your supply has to be able to deliver the peak currents that your switching converters actually draw during the ON-time. On top of that, you need to provide some headroom.
  10. A

    [SOLVED] Arrangement of isolated variable DC input

    The green LED is also prone to degradation, so instead of having the resistor parallel to only the diode of the opto, the resistor should be made to be parallel to the three series-connected components (i.e. the opto diode, the green LED and the series resistor).
  11. A

    [SOLVED] Arrangement of isolated variable DC input

    Hi, Using the top circuit of post #3 the starting point, you have about 10 mA flowing through the diode of the opto. That's high considering CTR degradation. You can connect a resistor in parallel to the diode of the opto. The resistance should be selected such that only about 1 or 2 mA flows...
  12. A

    Delaying Sample and Hold by one Clock cycle

    Hi, Are you processing the clock prior to its use for the sampling (e.g. is your application enabling the clock for some clock cycles and disabling the clock for some other clock cycles? It's in situations like that that delaying the clock could be useful. If the clock is constantly running...
  13. A

    concatenation in VHDL?

    Hi, You can only use the concatenation operator at the RHS of your assignment operator. 1709059945 If you're having an issue with your code, then you may have to post the affected part of your code here.
  14. A

    3ph DC motor control board damaged with arduino output signal

    Your board may have been wrecked. If you fix it, then along with those of others, there are a few observations you'd need to take of. First, do you realize that these two boards that you posted on post #1 are different? 1708484260 You did not connect the hall sensors. Are you not using them...
  15. A

    Can't run a 24V DC fan with NPN PWM output signal

    Hi all, I have just noticed that the OP had mentioned that they were using a clone PLC in their project. I am not in support of their use of a clone PLC. All help that I have provided to the OP on this project were given without me noticing that the OP had mentioned that they were using a clone...

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