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Recent content by zywts

  1. Z

    Anybody with FIB experience please help!

    do not know. but, if you deals with the vendor. get the technical support from that vendor. tell them a bit about your process. they have a good idea about the yield. if it is too difficult, some time they will try and some time they will just say no.
  2. Z

    24 v DC to 5 v DC converting

    switching based step down converter is the way too go for efficiency and thermal issue. 1A*19V, too much power disspation in the chip
  3. Z

    How to make a Wireles Charger

    if you look into inductive wireless charging, this help will help. I will just paste text url here. you can copy paste it. Looks like clickable url somehow need moderation. **broken link removed**
  4. Z

    soldering station recommendation needed.

    I second bigdogguru. If possible, definitely go get WESD51. I have WES51 at home. It works great. For hakko, I heard that some people complain that it displays preset temperature instead of tip temperature. see the review here. **broken link removed** That only is a turndown for me.
  5. Z

    ON/OFF circuit when it receive 3v signal. transistor? relay?

    you can use a power transistor with low on resistance to achieve it. Just make sure no abs/max get violated - - - Updated - - - forget to add this. for example this product, sorry link is a bit long **broken link removed**
  6. Z

    How do you measure the output impedance of an OTA in Cadence?

    you can force ac current source at the output and measure the ac voltage at that node. Then you plot over freq. you have the output impedance over freq
  7. Z

    what is the reason behind op-amp symbol?

    do know know may be get it from inverter?

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