I have a PCB board where I am measuring the voltage drop across a resistor which is placed on the Vdd path of a small micro-controller. I would like to have a method for easily interchange the resistor (the current one is soldered to the board so I should first desolder it) in order to test resistors with different qualities and temperature coefficients. I was thinking on something like a jumper cap, but with a resistor soldered to convert it from a 0Ohm resistor to a Ohm resistor. This way I could easily interchange different resistors (e.g., by having multiple caps with different resistors). Is this something that already exists? I have been searching on the Internet and I have not been able to find such a thing. If I am right and it does not exist, any hint on how could I build it?

Thanks in advance ;-)

  • \$\begingroup\$ What package of resistors are you planning on using? Because if through-hole then just use 0.100" female header sockets/receptacles and stuff the resistor leads in. Like a breadboard. You may not even have to change your current PCB layout. You can also use screw terminals. If surface mount, invest in hot tweezers. \$\endgroup\$ – DKNguyen Apr 28 at 18:50
  • \$\begingroup\$ I am thinking on surface mount resistor. In that case, which components would I need? My idea is to remove the current resistor (which is SMD as well), then solder a couple of pin headers (?) so then I can place jumper caps where I have attached different resistors. \$\endgroup\$ – Engineer 007 Apr 28 at 18:50
  • 1
    \$\begingroup\$ SMD is harder since footprints are more specific. No such thing that you mention exists. Your "caps" are called shunts since caps usually means capacitor. You might need to use these: proto-advantage.com/store/… \$\endgroup\$ – DKNguyen Apr 28 at 18:52
  • 1
    \$\begingroup\$ What are all the purposes of this R-jumper and why put restrictions on it? They do not exist because it not the best way to do what you want in volume or prototype. \$\endgroup\$ – Tony Stewart Sunnyskyguy EE75 Apr 28 at 19:29
  • 1
    \$\begingroup\$ The purpose is to simply being able to easily measure the voltage drop across resistors with different values and/or temperature coefficients. I want to avoid desoldering and soldering each time I need to use a different resistor in the development board. Regarding the restrictions thingy, from my side there are no restrictions. \$\endgroup\$ – Engineer 007 Apr 28 at 19:57

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.