December 20, 20205 yr Hello, My PCB board has 9 resistors of 1KOHM and 10 resistors of 10KOhm. Unfortunately they are all marked R1 thru R19, and I dont know which is ,1 and which is 10. I looked at the diptrace file, and it does not have an Ohm values. Is there some way I could figure out which is which, by looking at where it goes, or something else?
December 20, 20205 yr Hello. If the PCB for your project was designed by somebody else then the only way is to compare the PCB with a circuit diagram of the device that you're building.
December 21, 20205 yr Why dont you measure the resistance with an Ohm meter ?, or alternatively check the colour coding. 1K Ohm Brown/Black/Red/Gold. 10K Ohm Brown/Black/Orange/Gold Neil Ward CPU Intel Core i7 [email protected] with FrostFlow 240L Liquid Cooling, M/B ROG STRIX X299-E-GAMING, NVIDIA GeForce GTX 1080 Ti, RAM G.Skill 32GB DDR4 Ripjaws Blue,
December 21, 20205 yr A couple of points wrt the above post: 1. The Gold color represents the resistor's tolerance -- Gold is 5% accurate, Silver 10%, no fourth color 20%, so it is the first three colors as specified above that are important in this case. And depending on the type of resistor, there make be no colors observable. 2. If you use an Ohm or Multimeter to measure the resistance, make sure all power to the circuit board is off. 3. When measuring the value of a resistor 'in circuit', the resistance value you get will be reduced by any circuit resistance that happens to be in parallel with the resistor you are measuring. So you could easily see readings much less than expected. Al Edited December 21, 20205 yr by ark
December 21, 20205 yr 9 hours ago, SergeyPe said: My understanding was that the question was about populating the bare PCB... In that case, "never-mind". 🙂
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