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Recent content by mattiad

  1. M

    Particular Connector

    Thank you, I didn't know that the model was IDC. Best Regards, Mattia
  2. M

    Particular Connector

    Dear all, can anyone tell me a part number o this kind of connector? It's particular because you can insert the wire directly and it cuts directly the insulation. Thank you in advance, Mattia
  3. M

    USB port breaking problem

    Dear all, first of all I hope to have made the question in the correct section. I have a problem whit a device that I’ve built: it contains a LPC4300 micrcontroller and its supplied by a 24Vdc. I’ve notice a strange problem when I connect it to a USB port. The device is use as a Slave. First I...
  4. M

    Monitoring a relay for safety matters

    Dear All, I have a circuit in which I drive 2 separate relays with a micro and now I need to monitor the status of these two, in order to guarantee a particular safety. I would like to avoid to use a "safety relay" which has a double contact that let me check the status of one contact with...
  5. M

    Block diagram modelling

    Hi everyone, can someone help with this exercise? **broken link removed** I need to know the transfer function between Y/X and also between Y/N. I think this could be very difficult! Any trick to resolve this problem? Thank you!! :-)
  6. M

    Cross Coupled LC oscillator

    Hi everybody, could someone tell me if the parameter gm can influence the frequency in cross coupled LC oscillator? Thanks
  7. M

    Temperature Coefficient Inductance

    Thank you for the information, do you know if generally inductors increase with temperature?
  8. M

    Temperature Coefficient Inductance

    Hi Everybody, I'm studying the behavior in temperature of many components in integrated circuits. Can anyone tell me something about inductance and varactor? How they change in temperature? Do the increase or decrease? Mattia
  9. M

    Temperature drift in LC oscillator

    Thank you for the information. I forgot to say that the oscillator I'm studying is an Integrated circuit. I'm focusing the study of temperature drift so I think I can not consider the mechanical causes. My problem is the following: I examined precisely the varactor and the mos' behavior but the...
  10. M

    Temperature drift in LC oscillator

    Hi everybody, I'm studying the causes of temperature drift in an LC oscillator. I examined the variation of the varactor and the parasitic junction capacitance in the couple of MOSFET. In your opinion are there any other parameters which have a variation in temperature? (Sorry for my English...

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