18. SIL Resistor package A single in line (SIL) resistor package with 8 individual, 47 ohm resistors. One end of each resistor is connected to a separate pin and the other ends are all connected together to the remaining (common) pin - pin 1, at the end identified by the white dot. Resistor
19. Variable Resistor Potentiometer , informally, a POT , is a three-terminal resistor with a sliding contact that forms an adjustable voltage divider . If only two terminals are used (one side and the wiper), it acts as a variable resistor or Rheostat . Potentiometers are commonly used to control electrical devices such as volume controls on audio equipment Resistor