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Recent content by joeka

  1. J

    incrementing constant delcaration in vhdl

    Thank you for your help. I'm gonna take a look at arrays.
  2. J

    incrementing constant delcaration in vhdl

    Actually, I don't want to modify constant values. I just want to read them in a loop but i don't know how to increment the reading.
  3. J

    incrementing constant delcaration in vhdl

    Hi, I declared some registers as constant in vhdl. I'd like to send them to a component via spi. However there are more than 1000 registers to send. All of registers are declared as : -- address constant REG0000 : std_logic_vector(15 downto 0):= x"0000"; constant REG0001 ...
  4. J

    Circuit to keep power during micro-cuts.

    Hi godfreyl, There is only 8V at the ouput of LT1510 (BAT pin 11) so capacitors won't be overvolted and the input voltage is about 4V higher than the battery voltage, so it's fine. Regards
  5. J

    Circuit to keep power during micro-cuts.

    Hi, I'm currently working on a project where I need to keep power during micro-cuts. In order to validate the power supply card, this one must supply a camera during 300-400ms. To do this, I'm using 3 high caps 3.3F 2.7V (REF : NICHICON - JUMT1335MPD. - CAPACITOR DBL LAYER, 3.3F, 2.7V) as...
  6. J

    VGA to PAL using AD725

    Here is an example of what i see on a TV :
  7. J

    VGA to PAL using AD725

    Hi, I'm currently developping a system to output PAL video from a camera. I worked on a former project where the ouput video was in VGA. The video structure was like this : FPGA => DAC => VGA. In order to add PAL format to this project, I add an AD725 to convert VGA to PAL. I proceed as...

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