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  1. GPG

    Is it possible to find serial output if you know all parts on a PCB?

    Pretty much necessary. The 2 stop bits will cover a small discrepancy. The bit rate is 1/16 clock.
  2. GPG

    Joining transformer wirer

    240 x 8 =1.92 Kw. Be a nice heater.
  3. GPG

    Is it possible to find serial output if you know all parts on a PCB?

    That corresponds to 8 data, 2 stop, no parity. You will have to trace the clock circuitry to find speed or measure the frequency of the clock pin.
  4. GPG

    Is it possible to find serial output if you know all parts on a PCB?

    You need to find out if NB1, NB2, NP, TSB and EPS of the UART are connected to Gnd or 5V This will give you the number of data bits, parity, stop bits.
  5. GPG

    DA converter

    EG: Compact Disc. DVD, DVB etc. (qv)
  6. GPG

    Turning supercapacitors into batteries

    http://batteryuniversity.com/learn/article/whats_the_role_of_the_supercapacitor
  7. GPG

    pwm opinions

    Some useful info; http://www.irf.com/technical-info/appnotes/an-978.pdf
  8. GPG

    PSU board problem (LCP106830-0001)

    Do you have a meter?
  9. GPG

    Confusion between cap charge and discharge

    The total charging voltage is 5 + 4.4v (initial voltage across R) Taking the capacitors -4.4 as reference, the total change is 4.4 + .6V =5V
  10. GPG

    Need someone to design and make a basic circuit (UK)

    Why two supplies? This is the converter topology that will do buck/boost http://www.ti.com/lit/an/slyt309/slyt309.pdf Google voltmeter module . There are heaps of them.
  11. GPG

    pwm opinions

    That's going to slow the switching, resulting in higher dissipation. What is driving the gate?
  12. GPG

    Missing parallel resistors

    It is not my interpretation that is incorrect.
  13. GPG

    PSU board problem (LCP106830-0001)

    Measure the voltages on the controller pins.
  14. GPG

    Panasonic VCR Issues (Model AG-7330)

    Some machines have switches on the front loading mech to tell sys control the state, and wont operate without the plug in and the tray in the loaded position. Another problem that is common is the mode switch.
  15. GPG

    Missing parallel resistors

    GPG said: ↑ Perhaps you are meant to solve if R3 in rows a, b, c again NO I f you read the whole reply #4 I concluded that for a b c R3 is void
  16. GPG

    Voltage and current relation difference between Ohm's law and Power

    Marshall Givens?
  17. GPG

    Panasonic VCR Issues (Model AG-7330)

    Another thing, when it does this be ready (lid off) and rotate the supply reel, assuming by rewind you mean the take-up reel. This tells the controller that all the tape has been wound in.
  18. GPG

    Panasonic VCR Issues (Model AG-7330)

    Get a tape you dont want and gut it removing the clear windows. Cover up the tape-end holes with black tape. This is a test blank. See if the machine will load it. Worrying.
  19. GPG

    Missing parallel resistors

    Perhaps you are meant to solve if R3 in rows a, b, c.(They are marked) are missing. d, e, are solvable.
  20. GPG

    Please I need help designing a 4way speaker crossover Network

    https://trueaudio.com/st_xov_1.htm There are a number of calculators of various order filters on line
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