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Recent content by Simao.Berkof

  1. Simao.Berkof

    [General] Why high side mosfets get hot in buck converter?

    I guess you are stressing IR2110 too much, I would try with only one high side FET connected to IR2110 and this 100W bulb load (eventually 2 high side FET)s. IR2110 is rated to +/- 2A and with 6 FETs with 3.74nF of gate capacitance each, makes me think it will not work (sorry I´m too lazy to...
  2. Simao.Berkof

    Pure sine wave inverter design and circuit

    Hi George! How did you get ride of core´s saturation in such a medium power push pull design? Thanks in advance. Simao Berkof
  3. Simao.Berkof

    [ARM] Serial Wire Debug where do we use where should i get info about it??

    Start with these links: https://en.wikipedia.org/wiki/Joint_Test_Action_Group#Serial_Wire_Debug **broken link removed** https://www.google.com.br/search?q=swd+tutorial&ie=utf-8&oe=utf-8&gws_rd=cr&ei=80OAVbrsAojksAT2u4LoBQ#q=swd+tutorial&start=20...
  4. Simao.Berkof

    [SOLVED] GPS Communication to pic

    Sometimes you have to program the gps module to send you the sentence you need. Look up the gps datasheet and verify which command is required to enable GGA sentence, you may also disable the sentences you don´t need. Hope it helps. Simao
  5. Simao.Berkof

    Problems on RF communication between PIC

    Yeap, try 1200 or lower baudrate
  6. Simao.Berkof

    [SOLVED] PIC code improvement

    I would try to convert z_n*63 -> ((z_n << 6) - z_n) // = z_n * 64 - z_n = z_n*(64-1) Re writing z_n = xor + (((z_n << 6) - z_n)>>6); xor_sum = z_n>>6; Hope it helps. Simao
  7. Simao.Berkof

    ARM Stellaris LM4F120H5QR

    Take a look at http://www.edx.org/course/utaustinx/utaustinx-ut-6-01x-embedded-systems-1172#.Uz_-FKIs8s9
  8. Simao.Berkof

    INDUCTANCE AND CAPACITANCE METER USING PIC...LC METER

    Re: pic inductance meter Hi jonw0224. Could you please, confirm Mr. Rice´s link you gave us? **broken link removed** , it seens to be broken and i would like to visit very much. Thanks Simão
  9. Simao.Berkof

    heater pwm regulation with triac

    Try these links, i believe you will get a lot of good information, they helped me a lot in the past. **broken link removed** http://www.embeddedrelated.com/showarticle/121.php http://brettbeauregard.com/blog/2011/04/improving-the-beginners-pid-introduction/...
  10. Simao.Berkof

    Generate 40KHz without using pwm

    Running @ 4 MHz your machine cycle is 1 µs, so it´s not possible to achieve 6.25 µs (40 KHz @ 25% duty cycle). If you need "exactly" 6.25 µs on and 18.75 µs off (40KHz @ 25%) you will have to choose among these clock frequencies. Xtal Freq........# machine cycles on.......# machine cycles...
  11. Simao.Berkof

    16F877A CCP PWM odd output

    Yep, probably the missing "40" was the guilt one, you are acessing a value out of the array.... Simao
  12. Simao.Berkof

    32bits counter on PIC assembly ?

    Take a look at **broken link removed**, may be it´s what you need Simao Berkof
  13. Simao.Berkof

    Increasing the sampling rate of ADC in PIC18F4550

    Did you try to get ride of these 2 calls to Delay10KTCY(240)? Just doing the calls you are limiting you convertions/transmitions to something around 2 convertions per second, you are waisting lots of time there. Why do you need such amount of delay anyway?? while (1) {...

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