query: Why are there unconnected exposed pads on PCBs
positive_passages.docid: 146384
positive_passages.text: What are these spots on the PCB that are by the mounting holes?
negative_passages.docid: 149460
negative_passages.text: 'bridges' on a PCB copper layer
negative_passages.docid: 80434
negative_passages.text: Can cable splice devices be concealed?
negative_passages.docid: 134328
negative_passages.text: What are the 'knuckles' on through-hole LEDs and photodiodes for?
negative_passages.docid: 70747
negative_passages.text: Metal bar on DMM PCB
negative_passages.docid: 37859
negative_passages.text: Help understanding this schematic : Why is the diode there (AT89C2051 Programmer)?
negative_passages.docid: 20885
negative_passages.text: Purpose of "wave shaped" PCB traces
negative_passages.docid: 126684
negative_passages.text: How to remove spikes from switching transistor?
negative_passages.docid: 124756
negative_passages.text: Soldering heatsink pad on bottom of IC
negative_passages.docid: 136823
negative_passages.text: How to choose trace width for very high current PCB?
negative_passages.docid: 114843
negative_passages.text: Alternative to inductor on IC
negative_passages.docid: 85414
negative_passages.text: maximum via current carrying capacity pcb
negative_passages.docid: 129018
negative_passages.text: Why does water short out PCBs? (i.e. Why doesn't electricity follow the path of least resistance?)
negative_passages.docid: 12532
negative_passages.text: How are one-time pads distributed?
negative_passages.docid: 106262
negative_passages.text: Why route air gaps for voltage isolation on PCBs?
negative_passages.docid: 149119
negative_passages.text: How can PCB trace have 50 ohm impedance regardless of length and signal frequency?
negative_passages.docid: 122290
negative_passages.text: High Voltage PCB Design