0
\$\begingroup\$

I have the schematic for an 8 channel 24V to 5V optocoupler board I purchased. It uses the EL817.

My input is an open collector input pulled up with 10K to 5V.

I can't drive it to gnd to trigger my input. It only goes down to 1.79V.

I would like to upload the schematic and my load if I can.

Thanks

\$\endgroup\$
11
  • 1
    \$\begingroup\$ The module is similar to the jpeg just with leds on input and output. \$\endgroup\$
    – VIC
    Commented Jan 11, 2021 at 8:12
  • 1
    \$\begingroup\$ How do I provide a link in my comments to the module and schematic? \$\endgroup\$
    – VIC
    Commented Jan 11, 2021 at 8:13
  • 1
    \$\begingroup\$ I am trying to take a 13.8v or 0v input and convert it to +5v or 0v. The input of the circuit I am trying to switch between +5v and 0v is just a collector pulled with 10K to +5vcc and the emitter is connected to gnd. When the EL817 goes low it will only drive it down to 1.87 v ???? \$\endgroup\$
    – VIC
    Commented Jan 11, 2021 at 8:37
  • 1
    \$\begingroup\$ Why can't you upload it? What's stopping you? \$\endgroup\$
    – Andy aka
    Commented Jan 11, 2021 at 9:50
  • 1
    \$\begingroup\$ the title of your post should be about an electronics problem, not about the usage of this website ... site usage questions belong at electronics.meta.stackexchange.com \$\endgroup\$
    – jsotola
    Commented Jan 11, 2021 at 17:10

0

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Browse other questions tagged or ask your own question.