The present invention relates to an adjustable resistor embedded in a circuit board and a method of fabricating the same. The adjustable resistor comprises a resistor with a number of connection terminals, and a number of via holes extending to contact with the resistor. The resistive value of the resistor...http://www.google.se/patents/US7911318?utm_source=gb-gplus-sharePatent US7911318 - Circuit boards with embedded resistors