What size diode and…
 
Notifications
Clear all

What size diode and capacitor for 12 vdc automotive style relay

 
(@jschlaman)
New Member

Mr. Carlson,

What size diode and capacitor do you recommend for the 12vdc Bosch style automotive relay? 


Quote
Topic starter Posted : 27/11/2025 9:32 am
Mr Carlsons Lab
(@mrcarlsonslab)
Owner Admin

A 1N4007 is usually fine. If the relay is in an automotive setting, IE: Connected to an ECU, make sure the diode is the right way around or you will damage your computer. In any case, if the diode is the wrong way, it will look like a short and damage what is controlling it.


ReplyQuote
Posted : 01/12/2025 3:34 am
(@jschlaman)
New Member

@mrcarlsonslab you mentioned also using a capacitor,  whic one do you recommend for this circuit? NC0 perhaps?


ReplyQuote
Topic starter Posted : 08/12/2025 7:36 am
Share: