I want to send a trig signal over a 9m cable, the signal is around 60Hz (each 15ms it sends a 1ms pulse). In order to avoid electrical interference I convert the 3.3V original signal with the following circuit:

enter image description here

I have a power supply of 24V available so this circuit is converting the 0 to 3.3V signal into 0 to 22V, my questions is: is it ok to send 1ms pulses using 24V or should I use a lower power supply of 12V? On the other side I have an opto-coupler and a current limiter of 10mA.

  • \$\begingroup\$ 15 ms is 66.67 Hz and not 60 Hz. \$\endgroup\$
    – Andy aka
    Jun 4 '20 at 10:44
  • 1
    \$\begingroup\$ Shoud be no issue. Do you have any strong radio transmitters nearby? \$\endgroup\$
    – winny
    Jun 4 '20 at 10:59
  • \$\begingroup\$ @winny No RF transmission in the vicinity, probably WiFi hubs in the same room thats all. \$\endgroup\$
    – Pedro NF
    Jun 4 '20 at 16:52
  • 1
    \$\begingroup\$ No issues. Report your findings once built! \$\endgroup\$
    – winny
    Jun 4 '20 at 19:58

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.