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Type: Posts; User: ArticCynda

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    Closed: Re: LT3800 at > 10A output current

    I don't see how the current through the MOSFETs/inductor/shunt resistor would affect gate drive or high side voltage, could you elaborate on what you mean?
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    Closed: LT3800 at > 10A output current

    Hi all,

    I need a compact 48V to 12V buck regulator with high output current (40A). I thought of using the LT3800 as controller, and 2 Toshiba TPH2R608N N-channel MOSFETs in a synchronous push-pull...
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    Closed: Wireless TX/RX with long range

    Hi everyone,

    I'm new to long range digital wireless communication, and would like to set up a wireless serial link (i.e. wireless UART) between 2 Raspberry Pis. The throughput should be at least...
  4. [SOLVED]Closed: Re: what is the purpose of this layer over PCB ?

    It's too peelable to be conformal coating, but I've seen designs that use beeswax or another type of wax to protect boards, and still be removable for maintenance (i.e. easy to melt with hot air...
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    Closed: Re: Free trial of Altium designer 18.1.7

    You can request a free 30 day trial from Altium, so that should be enough to evaluate the software.
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    Closed: Re: Altium - bus of harnesses

    I've never seen harnesses being combined with a bus, so I don't think it's possible. Harnesses are typically used to group logical signals together, for example MISO, MOSI and SCK for SPI or SDA and...
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    [SOLVED]Closed: Re: Protection of 15A DC power line

    Thanks for sharing your thoughts! The cost of the LM74610 is quite affordable in volume, particularly considering the losses a P-MOS would incur at currents of 15A, so I'll go for that solution.
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    [SOLVED]Closed: Re: Protection of 15A DC power line

    Thanks for the link, d123!
    May I ask a naive question: is there still a reason to use chips like the LM74610 anno 2018, now that we have P-FETs with such a low Rds(on), as used in the TI application...
  9. Closed: Re: Differential analog signal transfer over long cable

    Thanks for the replies everyone.

    For the prototypes I've decided to use the MAX4447 as transmitter, and MAX4444 as receiver. I'll keep you updated on how well that works (or doesn't)!
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    [SOLVED]Closed: Protection of 15A DC power line

    Hi everyone,

    I need overvoltage and reverse polarity protection on a 12V DC line, carrying a current up to 15A. I thought about using a hot swap controller like the LTC4211 as eFuse, which would...
  11. Closed: Re: Differential analog signal transfer over long cable

    Thanks for sharing your thoughts, FvM. Could you share part numbers of the AD and TI parts you used for this purpose in the past, so I can compare performance please?
  12. Closed: Differential analog signal transfer over long cable

    Hi everyone,

    I need to transfer 2 relatively high speed (10 MHz) analog signals (5Vpp) over a cable as flexible as possible. Coaxial cables are too bulky and stiff, so I thought to use a SATA...
  13. [SOLVED]Closed: Re: Local Area Network with 100 nodes: wireless protocol selection

    We'll take a look at ZigBee and 6LoWPAN as probable candidates, thanks for sharing your thoughts!
  14. [SOLVED]Closed: Re: Local Area Network with 100 nodes: wireless protocol selection

    I had considered Zigbee before, but according to the official spec there are only 16 channels defined for IEEE 802.15.4, as opposed to 35 for BLE. Doesn't this mean the congestion problem will be...
  15. [SOLVED]Closed: Local Area Network with 100 nodes: wireless protocol selection

    Hi,

    For an upcoming project, I need to be able to connect around 100 devices wirelessly to a gateway. The area is indoor and the size of an average movie theater room. All devices should be...
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    [SOLVED]Closed: Re: SPI MOSI line control override

    You're right as usual FvM, that worked! The text and timing diagram suggest different things, that's what got me confused. Thanks for the help!
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    [SOLVED]Closed: SPI MOSI line control override

    Hi everyone,

    I'm trying to write a software driver for the AD7689 8 channel 16 bit ADC on an Atmel ATmega328p microcontroller using the Arduino software framework. I can read back commands with a...
  18. Closed: Re: Length matching tool within a diff pair in Altium Designer 17 does not work.

    Have you marked the nets as differential in the schematic editor? Did you add them to a Differential Net class? Did you name them with the appropriate net name convention (_P and _N) to pair them?...
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    Closed: Re: Import Gerber files into altium designer

    Altium Designer can open and view gerber files, but you can't convert them back to a PCB in any way because gerber files do not contain any information about the components or footprints that were...
  20. Closed: Re: Antenna output voltage vs. received RF power

    Ideally, I'd like to be able to measure the field strength in the frequency range between ca. 430 MHz and 2.5 GHz, in bands of 1 to 2 MHz wide, with a fixed antenna.


    Most of these log periodic...
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    [SOLVED]Closed: Re: Altium designer problems.

    Glad to hear that your problems are resolved.

    Unfortunately, the guys at Altium really seem to be struggling to get these errors resolved. Even their free version of Altium Designer, CircuitMaker,...
  22. Closed: Re: Antenna output voltage vs. received RF power

    Assuming that the load impedance is constant, it can be deducted that the power of the received signal can then be correlated to the output voltage, if the bandwidth of the antenna is reasonably...
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    Closed: Re: Serial Monitor not displaying anything

    Could it be that you're forgotten to connect the power in the simulator? As far as your code concerns, this should definitely work on a real Arduino Uno.
  24. [SOLVED]Closed: Re: Floating/unconnected copper pad when making custom pad in Altium

    The easiest way to do this is as follows:
    - draw the custom shape as a region, and apply solder and paste mask expansion rules to it
    - place a small SMD pad with the correct designator in the...
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    [SOLVED]Closed: Re: Altium designer problems.

    Errors like that one are usually caused by page faults, and have been crippling Altium Designer for years now. The only solution is saving your work, and restarting Altium Designer.
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