In the circuit design process, we often have to use 0R resistor, then what are the role of 0R resistor? In fact, 0R resistance in the circuit does not have any function, just to facilitate debugging and compatible PCB design.
1. Debugging test, when the matching circuit parameters are uncertain, replace with 0R, determine the parameters when debugging actually, and then replace with specific numerical value components. To test the current consumption of a part of the circuit, you can remove the 0R resistor, connected to the ammeter, so easy to measure the current consumption.
2. When wiring to cross-line, you can add a 0R resistor.
3. Can be used jumper, general products do not appear jumper and DIP switch. In order to reduce maintenance costs, 0R resistor can be used instead of jumper and other soldered on the board. Vacant jumper at the high frequency equivalent to the antenna, with a patch resistor effect.
4. Under high-frequency signals, it can act as inductors or chip capacitors to solve EMC (electromagnetic compatibility) problems.
5. Single-point grounding (referring to protective earth, working ground, DC ground, separated from each other on the equipment, each becoming a separate system.)
6.0R resistor is equivalent to a very narrow current path, can effectively limit the loop current to suppress noise, so that noise is suppressed. Resistance in all bands have a decay effect, 0R resistance also has impedance, which is stronger than the chip magnetic beads.
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