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Recent content by capacitor1

  1. C

    Help with current filtering on controller of brush-less DC motor (BLDC)

    Re: Current filter , Can u help ? Hi thanx Mr BradtheRad has anyone another answer ?? thanx in advance
  2. C

    Help with current filtering on controller of brush-less DC motor (BLDC)

    Re: Current filter , Can u help ? Hi Mr BradtheRad if this true why the multimeter can read the value without any problem and without delay !! i don't know what the filter inside looks like !? thanx
  3. C

    Help with current filtering on controller of brush-less DC motor (BLDC)

    Re: Current filter , Can u help ? Mr phoenix the problem is not how to read . the problem how to filter the crazy oscillations in the signal generated by the current this is my conditioning circuit in these 2 pictures i think the idea is to use digital filter ? or can anyone help...
  4. C

    Help with current filtering on controller of brush-less DC motor (BLDC)

    Current filter , Can u help ? Hi everyone I have a problem of current filtering with my controller of brushless dc motor (BLDC). the problem that the current is PWM and i want to read it and show a fixed value like the multimeter process. so what's the filter that can be used to prevent...
  5. C

    sensorless brushless 3 phase motor position control ??

    Hi HTA Thanx very much for your help
  6. C

    sensorless brushless 3 phase motor position control ??

    Hi HTA About the gimbal brushless motor , is it a stepper motor or what , normal brushless motor ???
  7. C

    sensorless brushless 3 phase motor position control ??

    Hi Mr HTA Sorry for being late My goal in my project is to do a gimbal brushless motor 2 axis. the board used by the engineers contains micro,gyros, accelerometer and (L6234d). this IC is for sensorless brushless motor control . My question is how they can control this accurate gimbal...
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    sensorless brushless 3 phase motor position control ??

    Hello Mr HTA thanx for you reply. u said that the control of position will be by an encoder, but the problem is in the sensroless bldc that can't (according to the application notes) be rotates with a speed under 100 RPM = 1.6 RPS !! so how can i control this bldc with a min speed = 1.6 RPS so...
  9. C

    sensorless brushless 3 phase motor position control ??

    hi please can any one give me some solutions (ic , circuits ) about controlling the position of a sensorless bldc motor thank u very much
  10. C

    hard circuit can u help ( crystal diode modulator))

  11. C

    hard circuit can u help ( crystal diode modulator))

    Hi Mr FvM the ring modulator is special for AM modulation, but in this circuit i want to know how a DC signal is converted to AC?? I understood that if it's a positive dc input voltage ==> the ac signal is in phase and if negative, the ac is out of phase . but how the output ac signal is...
  12. C

    hard circuit can u help ( crystal diode modulator))

    hi it's a hard circuit with the explication i didn't understand it, is it logic !!!!??? Crystal Diode Modulators The crystal diode modulator (fig. 2-17) consists of a diode bridge and a transformer network. When the ac reference voltage is applied to transformer T1, diodes CR2 and CR3...
  13. C

    hip4081 problem power supply

    does anyone have another reply about this problem. please help me to know thanx
  14. C

    hip4081 problem power supply

    hi Mr Electro nS thanx for your help and i will try what you suggested, and i hope this will work fine.
  15. C

    hip4081 problem power supply

    hi everyone I want to do a ciruit that produce a voltage from -70 to +70. so I decide to use the h bridge with a LC filter. and this is the general purpose by hip comany: the values of components is : * diode mur130 *capacitor 100nF *resistor Hdel and Ldel = 200K * mosfet irf520 As you can...
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