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Recent content by canlu

  1. C

    three noise maker, but different output offset

    1more question: i have op37 with +-15V supply so output swing would be +-14V or a bit more... but according to output i have +19 and -10V what's happend here?
  2. C

    three noise maker, but different output offset

    maybe, i have different voltage across zener's (9.2 ~ 9.7) but circuit have 1% resistor's. however i expected after capacitor i have centered GND and but not with an offset. i'll try decrease zener resistor (R1).
  3. C

    three noise maker, but different output offset

    entire circuit 3 time...
  4. C

    three noise maker, but different output offset

    i'v been decreased R4 to 30K, so gain reduced to 30 and now feedback current is enough. but i have output offset -2.6 ~ 6V. And of course, when the input has an offset, the output will also have an offset too. input and output signal of first stage: now what? thank's in advance🥹
  5. C

    three noise maker, but different output offset

    i have -116mV, + 267mV signal there. decreasing R17 to 500k not affect. i'll test decreasing R4 tonight.
  6. C

    three noise maker, but different output offset

    i'm now understand. thank's D2 is 9.4V Zener So by removing C4 input offset Would be 9.4V i'll change R4 Value and Measure Value's.. @D.A.(Tony)Stewart l Measure value and inform theme thank's so much🙂
  7. C

    three noise maker, but different output offset

    What is the result of reducing gain?
  8. C

    three noise maker, but different output offset

    I received the circuit today.In the reviews, I saw that there is an offset at the displayed point. What causes the offset at this point? (capacitor's is MKT) and even after c1 i have offset :( Does the capacitor not eliminate DC?
  9. C

    three noise maker, but different output offset

    secound amplifire isn't important. secound stage is not placed...! how it would be different offset after C1(MKT)
  10. C

    three noise maker, but different output offset

    it's the real schematic, and yes d1 has same GND as R2 oscop connect between GND and pin2 of J1 thank for replay :)
  11. C

    three noise maker, but different output offset

    @room tempratore +- 15V non-isolated osiloscope and three circuit Isolated By MinMax DC-DC (MAU327) and without x-cap
  12. C

    three noise maker, but different output offset

    hi. i have this circuit with op37 op-amp, and repeated three time. but at output i have different offset according to pictures: every thig is same and resistor's are 1%. even in the output i have mkt cap. what can cause such behavier in this circuit?
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