cicuit

  1. E

    Hello fellas, i'm building a LDR circuit following my teacher's diagram, but i don't know what i did wrong, can you help me?

    Here's the circuit from my teacher And here's the circuit i built on ISIS I don't know if i'm using the wrong components or values, i need this for a school work here some more details: 10k Potentiometer Transistor BJT BC547 And i believe most of details are on the image already My...
  2. jvdrc123

    Can anyone explain me the pH sensor board circuit.

    I got this pH sensor board circuit design from one of the forum discussions. Can anyone please explain the significance of the resistors and capacitors used? I am new to the circuit design.
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