• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 46 subscribers
  • Views 750 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

LM393: request schematic review

TS Yang
Genius 4800 points
Part Number: LM393

Hi,

I'd like to request a cross check to see if there is any problem when applying the comparator.

Especially if you have a lot of 12V / 1V comparator circuit as below, and there is a reference schematic, please share it for us.

The following circuit concept (intention) is as follows.

The voltage is more than 13.4V, the alarm will be open.

thanks,

TS

  • 0
    TI__Guru 53966 points

    Hello TS,

    Looks good. The main concern is the input range at low supply voltages.

    The input limit (over temperature) is 2V below V+, or 0 to 1.3V on a 3.3V supply. The resistor divider ratio would allow up to 17V, so the 13.4 is well below the limit.