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Type: Posts; User: KlausST

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  1. Closed: Re: How to find the operating frequency for an ASIC?

    Hi,

    The usual way is to set the timing constraint first, then the compiler should optimize it to match the specifications.

    If you first set to 30MHz ... then there is no reason for a compiler...
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    Closed: Re: sine/cos encoder to digital

    Hi,


    Rather straight forward:
    If cos = 0, then there are just two possible solutions:
    Phi = 90° when sin = positive
    Phi = 270° when sin = negative.

    Klaus
  3. Closed: Re: Rectifier diodes with bypass capīs & gounding speaker basketīs

    Hi,

    Usuall you have this configuration:
    Line --> LF transformer -> bridge rectifier --> capacitors

    For sure the libe as well as the tranformer will introduce inductive effects.
    And the...
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    Closed: Re: sine/cos encoder to digital

    Hi,

    Sin/cos = tan

    Thus divide your "sin" value by your "cos" value. Mint the undefined situations where cos value ( 90° and 270°)
    Then from the tan value you may directly calculate the...
  5. Closed: Re: Peak Current in AN1292 Microchip Application Note

    Hi,

    a motor is a device that tranforms electrical power to mechanical power (and vice versa).

    The mechanical power is: P = 2 * Pi * RPS * torque.
    The higher the torque --> the higher the...
  6. Closed: Re: Baud rate limitation in PIC Microcontoller

    Hi,


    For sure the datasheet canīt give a table for every possible XTAL frequency. (It surely has enough pages yet. )
    But you are able to use the given formulas.
    Or just recognize that...
  7. Closed: Re: Doubt in the concept of 3 phase thyristor based full wave fully controlled rectif

    Hi,

    There are several issues in your post/schematic.

    Please read some reliable documents from semiconductor manufacturers.
    They usually explain all you need to know.

    If there still are...
  8. Closed: Re: Baud rate limitation in PIC Microcontoller

    Hi,

    the datasheet should tell you the limitations.

    I doubt that a PIC generally has a baud rate limiting around 100kBaud.

    I rather assume it is a problem of
    * Clock frequency (absolute,...
  9. Closed: Re: "RS-232 port to transfer data to PC for analysis"

    Hi,

    CRC has nothing to to with
    * the voltage levels
    * UART
    * USB
    * RS232
    ...

    It is part of a protocol. This means: the data you send and how you interpret them.
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    Closed: Re: Multiplexer garbage values

    Hi,

    Disabled outputs are floating = high impedance.
    This means the voltage is not defined...and thus is what you see.
    Additionally high impedance nodes are prone to pick up any noise and induced...
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    Closed: Re: solve this problem in DFE equalizer

    Hi,

    This is not how a forum works.
    We don't spend our time to give a solution from the scratch.

    --> Show us what you did so far. Show us your solution - even if you alreay know it is not...
  12. Closed: Re: 2:1 Multiplexer with open drain Outputs IC

    Hi,

    An analog MUX usually is bidirectional. I think you donīt need this.
    OpenCollector outputs need a pullup. This may be waste of power or slow rising edges.

    Thus I think lowVoltage powerd...
  13. Closed: Re: TVS Diodes power ratings for IEC 61000-4-5

    Hi,

    You may calculate the pulse energy that has to be dissipated by the diode.
    Or you run a simulation doing the math for you.

    Klaus
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    Closed: Re: Silabs C8051F300 programming?

    HI,

    You want us to do an ebay search for you?
    Why donīt you do it on your own? --> You get the same results than we, but faster.

    Klaus
  15. Closed: Re: Will this ceramic capacitor be damaged by overvoltage spikes?

    Hi,

    What value is the capacitor.

    Why this question?
    I see high rise and fall rate. With a capacitor this means high charge and discharge current. I wonder if the shown waveform and voltages...
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    [PIC]Closed: Re: PIC16F1934 Timer0 and some other stuff

    Hi.


    No. Definitely not.
    Apparently you misunderstand what "toggle" means.
    Toggle means
    * invert
    * in other words: when the LED previously was ON, then you switch it OFF and leave the ISR....
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    [PIC]Closed: Re: PIC16F1934 Timer0 and some other stuff

    Hi,



    XOR with it self = switching OFF
    XOR with 1 = toggle

    ******

    So far so good. But you want it to blink. Blink means: OFF - wait - ON - Wait ....repeatedly.
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    [PIC]Closed: Re: PIC16F1934 Timer0 and some other stuff

    Hi,

    Iīm not experienced with PIC. But there are a lot of informations that donīt match.

    You say:

    So this canīt be correct.
    Now you say timer0 is an 8 bit counter (and it seems to be...
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    [PIC]Closed: Re: PIC16F1934 Timer0 and some other stuff

    Hi,



    You donīt have to call the timer_isr. The timer_isr is automatically performed after every timer interrupt.


    Klaus

    Added:
  20. Closed: Re: Differential amplifier measure -32V to +32V with single 3.V supply

    Hi,

    The more sophisticated solution is to use an INA. But with your application I see no need for it.

    If you want the middle point to output 1.05V (when both inputs are properly connected)...
  21. Closed: Re: Differential amplifier measure -32V to +32V with single 3.V supply

    Hi,


    I've never heard about a microcontroller ADC with this (big) problem.
    Why don't you tell us the exact part name and vendor, or post a link to the datasheet?

    Picture: are you able to read...
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    Closed: Re: neoway n10 gsm module restart problem

    Hi,

    Replace R15 with a 10uH inductance.

    No, joke aside.
    It's impossible for us to give help without knowing your circuit and software.

    You need to debug the circuit:
    (Two main reasons for...
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    Closed: Re: instruction set translator

    Hi,

    and if you not only want to emulate "function" but also "timing", then it becomes even more difficult.

    Klaus
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    [SOLVED]Closed: Re: type 1 compensation in voltage regulators

    Hi,


    Then do so....just by pressing the "Mark as solved" button below.

    Klaus
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    Closed: Re: How to recharge a lithium battery pack ?

    Hi,

    Read about the charging methods.
    Read through battery manufacturer provided documents.
    Read through batteryuniversity.com
    Read through other informations.

    At each source you will...
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