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Recent content by mabbri

  1. M

    Stepper motor mid-band resonance

    stepper motor resonance Hi.... I've read about "mid-band resonance" that causes the stepper to stall when running at low steping rates. The oscillation may be so strong that the motor has no more torque in certain step frequency ranges and looses completely its position. This is due to the...
  2. M

    This is a working RS232.... ICD2 !!!!

    zaphod42 bootloader Ok, but the same difference exists between Jenda´s scheme and CD´s scheme
  3. M

    This is a working RS232.... ICD2 !!!!

    pic16f877a icd2 In original ICD2 **broken link removed** from microchip when the resistance of MCP41010 is at its highest value Vprog is at its lowest value and viceversa, but in CD´s design when the resistance of MCP41010 is at its highest value Vprog is also at its highest value and...
  4. M

    Newbie: what programmer should I get

    hi david90 microchip´s ICD2 is an all-in-one debugger/programmer for Pic mcu
  5. M

    Magnetic card reader&writer

    Use a card reader with rs232 and interface it with the PC
  6. M

    Looking for -5V, 3A voltage regulator

    Hi miho LM333 is an adjustable 3-terminal negative voltage regulator capable of supplying -3.0A
  7. M

    How to build a PIC16c76 programmer?

    Re: PIC16c76 programmer hi feiutm9898 check http://www.ic-prog.com/index1.htm
  8. M

    Look For AD Converter 30/50MSPS 10/12 bits?

    hi check Analog Devices site analog.com Lots of adc
  9. M

    PIC in industrial development?

    Hi, We use PIC16F877 for a winder. The only problem it's EEPROM corrupted as the system is powered down, but We solve it with a supervisory circuit.
  10. M

    Analog isolation circuits: any experience on this?

    Use HCNR200 Linear Analog Optocoupler Low Nonlinearity: 0.01% Wide Bandwidth - DC to > 1 MHz
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