Simulation software for designing a LED VU meter?

[mkiijam]

I have built many LM3914,15,16 LED driver circuits, but those chips are not for new designs and NLA from most suppliers. I'm planning on switching over to LM339, but have had some issues in the past with the LM39XX series being frequency dependent and other things.

Is there a good simulation software that one would trust to design a LM339 comparator circuit and light up some LED's with, but all in SIM space?

[Terry Bites]

See this thread.
https://forum.allaboutcircuits.com/threads/question-about-lm339-simulation.171203/
You might want to try tina first - its a TI spice model.
    NI Multisim
    Autodesk Eagle
    LTspice
    PSIM
    EasyEDA
    KiCAD
    CEGAR Logic Simulator
    Tina TI
    idealCircuit
    Microcap
    Proteus  etc

[CaptDon]

I have used the quad versions of the LM741's as Led drivers for bar graphs and I like the 10 segment 20 pin 5 green / 3 yellow / 2 red displays. You can put a 10 segment all green under it if you like lots of visual range. Also with individual comparator type circuits you can adjust the typical R2R ladder to be log, lin or a combination of both. Also, you can use one portion of the quad 741 as a buffer / amplifier if you are measuring low levels. The buffer / amplifier can also be set up as a precision rectifier to drive the signal input side of your comparators. You can choose a capacitor with series resistor to set the 'VU' rise time and a parallel resistor across the capacitor to set the 'VU' decay time. I built an entire metering back plane for a 24X4X4 mixer board for live sound gigs. I think if I were going to build something similar today I would start with 16 channel analog muxers, drive an A to D converter and use a CPLD or FPGA to gather the data and drive a muxed display. The analog muxers and A to D stuff is fast enough today to make the display appear as 'real time' and the 'VU' ballistics could be done with programming. Cheers, best wishes!!