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Recent content by MouradR

  1. M

    [General] High current and voltage programmable switches

    It is a complex load (z+jx)
  2. M

    [General] High current and voltage programmable switches

    Hi Kam, Thanks for ur help, Just wondering will the triac works with high frequency such as 20Mhz? Cheers, -MRN
  3. M

    [General] High current and voltage programmable switches

    Hi There, I have a circuit board with 9 loads (assume resistors) and each load is connecting to the input source (Sinusoidal signal) via toggle switch. so, now I've got 9 toggle switch to switch on/off the loads. The problem is now I want to extend the number of loads to be 16 or 32 etc.. and...
  4. M

    Small button battery

    I am looking for button battery/ batteries with its/their holder or retainer satisfy the mentioned criteria Thanks, -MRN
  5. M

    Small button battery

    Hi There, I am working on a design requires small button batteries due to space restriction. So, Required voltage = 3.6V - 5.5V retainer or holder Diameter = 8 mm maximum (SMT footprint) height = 6 mm maximum I don't mind using stack of batteries if they satisfy the criteria above Thanks -MRN
  6. M

    Setting Voltage reference for a Comparator

    Hi There, I have a Voltage comparator ADCMP600 and I am trying to set the threshold (reference) voltage to 20mV and this can be achieved by connecting 20mV to pin 4 (Inverting analog input). My question is how to get 20mV from 3V voltage supply. I know the obvious solution is voltage divider...
  7. M

    Pull up Resistor and Amplifier

    Just a operational amplifier. Sorry, I don't have the schematic on me at the moment.
  8. M

    Pull up Resistor and Amplifier

    Hi, I am working on an ECG circuit. It contains an instrumentation amplifier, two high pass filters, an amplifier and pull up resistor. Initially, I had the pull up resistor after the amplifier and it worked. I came today to test the circuit and it didn't work so I put the pull up resistor...
  9. M

    Setting Voltage refrence for MAX9691 Voltage comparator

    Thanks for your response, But I am still confused about something. In the datasheet there is circuit example (Figure 1. Regenerative Feedback—High-Speed Receiver with 50Ω Input and Output Termination). This example has VT = -2V. Is VT here the Threshold voltage ? and if yes does it mean if I...
  10. M

    Setting Voltage refrence for MAX9691 Voltage comparator

    Hi Guys, I am trying to use voltage comparator MAX9691 in my design. Basically the input signal is sinusoidal with peak of 200mV. So, I want to wire up this comparator in order to detect the pulse when it exceeds 20mV. The IC is 8-pins and very simple but I don't know how to set the reference...
  11. M

    Altium DXP error - Expression expected but ) found at line:10, char 14

    Hi There, Please help me, I just added polygon on a certain area on the board and suddenly some tracks somewhere completely away from I poured that polygon went crazy and giving me error because of the track width. Also I tried to delete the track width rule and could not delete it. I tried to...
  12. M

    [SOLVED] Pouring Polygon over internal planes in Altium

    Hi Guys, Thanks for the quick response, I am relatively new to Altium and didn't know that there is no need to pour polygons on planes :) Cheers, Mourad
  13. M

    [SOLVED] Pouring Polygon over internal planes in Altium

    Hi There, I am designing 4-Layer PCB on Altium and having hard time in pouring polygon. Simply I have two internal planes for Vcc and GND and I want to pour polygons on each of them with the right net. But when I try to choose the right Layer which the polygon will be poured on I can not find...
  14. M

    Comparator - Propagation delay/ Response time Vs. input frequency

    Hi Crutschow, Thanks for your reply It is an analogue Sine wave. I can not really find any comparator with this high speed. Do you know any comparator with this speed or response/delay time ? Cheers, Mourad
  15. M

    Comparator - Propagation delay/ Response time Vs. input frequency

    Hi There, I am really confused between two parameters in the comparator. The Propagation delay and the Response time. I understand that the Propagation delay is the delay from input to output of a digital gate switch and the Response time is how quickly a comparator changes output based on an...

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