home.social

#opamps — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #opamps, aggregated by home.social.

  1. I found the culprit... It's the #TL072 that goes into phase reversal because the gate and trigger signals are -12V when low.
    After swapping it with a #LM358, the output signals for trigger and gate, including the LEDs work as intended.
    This took a lot of time to find out, but I've gained some knowledge now.
    #PhaseReversal #OpAmps #BugFixing

  2. I found the culprit... It's the #TL072 that goes into phase reversal because the gate and trigger signals are -12V when low.
    After swapping it with a #LM358, the output signals for trigger and gate, including the LEDs work as intended.
    This took a lot of time to find out, but I've gained some knowledge now.
    #PhaseReversal #OpAmps #BugFixing

  3. I found the culprit... It's the #TL072 that goes into phase reversal because the gate and trigger signals are -12V when low.
    After swapping it with a #LM358, the output signals for trigger and gate, including the LEDs work as intended.
    This took a lot of time to find out, but I've gained some knowledge now.
    #PhaseReversal #OpAmps #BugFixing

  4. I found the culprit... It's the #TL072 that goes into phase reversal because the gate and trigger signals are -12V when low.
    After swapping it with a #LM358, the output signals for trigger and gate, including the LEDs work as intended.
    This took a lot of time to find out, but I've gained some knowledge now.
    #PhaseReversal #OpAmps #BugFixing

  5. I made a small voltage rail splitter using an #LM358 #OpAmp that I salvaged from an old motion detector.
    I want to play around with #OpAmps and thought it would be nice to have a #circuit for creating a virtual ground reference with positive and negative voltages.
    The boost converter is only for testing, I'll connect a 24V supply later.
    Only thing I have to adjust is the inrush current.
    I'll convert it to a soldered perfboard, too.
    #electronics #diy #dualrail #powersupply #breadboard #KiCad

  6. I made a small voltage rail splitter using an #LM358 #OpAmp that I salvaged from an old motion detector.
    I want to play around with #OpAmps and thought it would be nice to have a #circuit for creating a virtual ground reference with positive and negative voltages.
    The boost converter is only for testing, I'll connect a 24V supply later.
    Only thing I have to adjust is the inrush current.
    I'll convert it to a soldered perfboard, too.
    #electronics #diy #dualrail #powersupply #breadboard #KiCad

  7. I made a small voltage rail splitter using an #LM358 #OpAmp that I salvaged from an old motion detector.
    I want to play around with #OpAmps and thought it would be nice to have a #circuit for creating a virtual ground reference with positive and negative voltages.
    The boost converter is only for testing, I'll connect a 24V supply later.
    Only thing I have to adjust is the inrush current.
    I'll convert it to a soldered perfboard, too.
    #electronics #diy #dualrail #powersupply #breadboard #KiCad

  8. I made a small voltage rail splitter using an #LM358 #OpAmp that I salvaged from an old motion detector.
    I want to play around with #OpAmps and thought it would be nice to have a #circuit for creating a virtual ground reference with positive and negative voltages.
    The boost converter is only for testing, I'll connect a 24V supply later.
    Only thing I have to adjust is the inrush current.
    I'll convert it to a soldered perfboard, too.
    #electronics #diy #dualrail #powersupply #breadboard #KiCad

  9. Three potentiometers control the duty cycle for pulse width modulation of the three colour channels of an RGB LED strip (non-addressable). The PWM signal is generated by #opamps (#LM358) configured as an oscillator and 3 comparators. An NPN transistor sinks the current for each of the LED colours.
    #LEDs #electronics

  10. Three potentiometers control the duty cycle for pulse width modulation of the three colour channels of an RGB LED strip (non-addressable). The PWM signal is generated by (#LM358) configured as an oscillator and 3 comparators. An NPN transistor sinks the current for each of the LED colours.

  11. Three potentiometers control the duty cycle for pulse width modulation of the three colour channels of an RGB LED strip (non-addressable). The PWM signal is generated by #opamps (#LM358) configured as an oscillator and 3 comparators. An NPN transistor sinks the current for each of the LED colours.
    #LEDs #electronics

  12. Three potentiometers control the duty cycle for pulse width modulation of the three colour channels of an RGB LED strip (non-addressable). The PWM signal is generated by #opamps (#LM358) configured as an oscillator and 3 comparators. An NPN transistor sinks the current for each of the LED colours.
    #LEDs #electronics

  13. Three potentiometers control the duty cycle for pulse width modulation of the three colour channels of an RGB LED strip (non-addressable). The PWM signal is generated by #opamps (#LM358) configured as an oscillator and 3 comparators. An NPN transistor sinks the current for each of the LED colours.
    #LEDs #electronics

  14. Pulsating PWM using two #LM358 dual #opamps configured as a fast oscillator, a slow oscillator, and a comparator whose output is the source of one LED and the sink of another LED

    No microcontroller required
    #electronics #OperationalAmplifiers #LEDs

  15. Pulsating PWM using two dual configured as a fast oscillator, a slow oscillator, and a comparator whose output is the source of one LED and the sink of another LED

    No microcontroller required

  16. Pulsating PWM using two #LM358 dual #opamps configured as a fast oscillator, a slow oscillator, and a comparator whose output is the source of one LED and the sink of another LED

    No microcontroller required
    #electronics #OperationalAmplifiers #LEDs

  17. Pulsating PWM using two #LM358 dual #opamps configured as a fast oscillator, a slow oscillator, and a comparator whose output is the source of one LED and the sink of another LED

    No microcontroller required
    #electronics #OperationalAmplifiers #LEDs

  18. Pulsating PWM using two #LM358 dual #opamps configured as a fast oscillator, a slow oscillator, and a comparator whose output is the source of one LED and the sink of another LED

    No microcontroller required
    #electronics #OperationalAmplifiers #LEDs