tl072

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  1. S

    How to make a simple TL072 based impedance buffer

    Hello all, this is my first post here. I have designed a custom 12V battery, along with a LM386 amp circuit, which allows me to play my guitar through an 8ohm speaker fairly well However, when switching pickups from humbuckers to single coils, the audio starts to clip and distort How can I...
  2. S

    TL074 Op amp normal, expected heat amount?

    I have two TL072 chips, that seem to run warmer than I thought they would. I'm trying to figure out if my results are typical. In both chips, supply is +/- 15V. Each has two 0.1µF MLCCs, configured from + to GND, and - to GND, right next to the power pins. The power source rails have a couple...
  3. joulupukki

    TL072 unity buffer circuit oscillating with floating input?

    We've (@rpschultz) recently discovered that the buffer circuit we have in our upcoming tuner makes a nasty high pitch noise if the output is plugged into an amp and there's no input cable connected to an instrument/guitar. We're currently using the TL072 option (ignore the OPA1642 in the...
  4. gdma2004

    Lowpass filter with TL072

    Hi everyone, I'm trying to implement this active low-pass filter using a TL072CP. I have simulated it in LTspice, and its behavior is pretty much what I expected. However, when I assemble it on the breadboard and analyze its Bode plot, it appears more like a high-pass filter with poor gain...
  5. KEYHAN_A

    Hi :wave: a simple Audio PreAmp using TL072

    Hi there everybody this is my first post here and I'm so happy to find this community (which feels more like the real internet that we used to know), I had worked on some Robotic projects when I was a kid, then work life took me to programming for the past 15 years, and now I've got some time...
  6. cyberdevnet

    CD4066 - op amp phase reverse switch

    Hi everyone, first post and real noob here, I hope is the right section :) I'm trying to switch the phase of the TL072 using a CD4066 in the configuration shown in the attached schematic, the goal is to have a guitar buffer/booster using a digipot and eventually switch the phase with an...
  7. C

    TL072 op-amp voltage follower acts weird

    Hi All, I hope that I am posting to the right forum. After days of searching, reading, experimenting, I still have not been able to find a proper solution which I can tailor to my issue, so it is time to ask you guys. I made a voltmeter which consists of an Arduino microcontroller and an...
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