0
\$\begingroup\$

I'm using an ESP8266 to control a dual relay module. As a good practice, and a longer life for the MCU, I wish to power it not using its vcc and gnd pins, but using its JDVcc.

Appreciate explanation whether a 5v input into JDVcc is valid and won't damage the module.

\$\endgroup\$

1 Answer 1

Reset to default
0
\$\begingroup\$

Using 5V as a supply to power a relay coils that are rated for 3V is not valid and it might damage the module.

\$\endgroup\$
2
  • \$\begingroup\$ A 3v coil is not suited for a 5v input. I know. But JDVcc transfers it directly as 5v? \$\endgroup\$
    – guyd
    Jan 7, 2021 at 17:47
  • \$\begingroup\$ Yes, JDVCC is directly the coil supply, so 5V is not suitable. \$\endgroup\$
    – Justme
    Jan 7, 2021 at 17:51

Your Answer

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

Not the answer you're looking for? Browse other questions tagged or ask your own question.