888集团娛乐场登录|诚信|TOP

<thead id="pabgb"><tt id="pabgb"><track id="pabgb"></track></tt></thead>
<center id="pabgb"><wbr id="pabgb"></wbr></center>
    1. <output id="pabgb"></output>

    2. <th id="pabgb"><xmp id="pabgb"></xmp></th><span id="pabgb"><video id="pabgb"></video></span>
    3. <output id="pabgb"><dd id="pabgb"><blockquote id="pabgb"></blockquote></dd></output>
      <font id="pabgb"><mark id="pabgb"><delect id="pabgb"></delect></mark></font>

      PartSim Blog

      DC Source for Transient Sim

      Recently a Partsim user asked about a circuit that wasn't working.

      The user was expecting to see a typical RC curve across the capacitor, but saw nothing but a few pico amps of current and noise. So, what is the issue?

      Spice calculates the DC steady state circuit values before it runs a simulation. The simulation is started with those values. In this case, that DC steady state condition would have C1 charged to 13.5V, with no current.

      If you want to see a transient charge, you must use a transient voltage source.





      This circuit replaces the DC source with an AC source. It uses a Pulse in order to delay the source rise value, so we get a clear turn on, and the expected RC curve.


      And, the result - An RC current curve just like we learned in school.

      Play with the simulation here http://www.lkohho.icu/simulator#42178

      Blog Posts

      888集团娛乐场登录