Integrated resistors and capacitors pdf

One example of its use is to control the current in a circuit powering many light emitting diodes LEDs. In the fig. Each of the leads on the package is one resistor. The ninth lead on the left side is the common lead. The 4S indicates that the package contains 4 independent resistors that are not wired together inside. The housing has eight leads instead of nine. The other is semi-fixed resistor that is not meant to be adjusted by anyone but a technician.

It is used to adjust the operating condition of the circuit by the technician. Semi-fixed resistors are used to compensate for the inaccuracies of the resistors, and to fine-tune a circuit. The rotation angle of the variable resistor is usually about degrees. Some variable resistors must be turned many times multi-turn Pot to use the whole range of resistance they offer. This allows for very precise adjustments of their value. The four resistors at the center are the semi-fixed type.

The two resistors on the left are the trimmer potentiometers. It is well suited to adjust a low sound subtly. The rate of change is the same, or linear, throughout the sweep of the axis. This type suits a resistance value adjustment in a circuit, a balance circuit and so on. In the early stages of the rotation of the axis, the resistance value changes rapidly, and in the second half, the change occurs more slowly. Your email address will not be published.

The symbol of resistor is shown in fig. Resistors can be broadly of two types. Fixed Resistors Variable Resistors Fixed Resistors : A fixed resistor is one for which the value of its resistance is specified or fixed and cannot be varied in general. Example of fixed resistors are : Carbon Film Resistors : These are made of carbon dust or graphite paste and have low wattage values.

Metal Film Resistors : These are made from conductive metal oxide paste and have very low wattage values. Wire wound resistors : These resistors have metallic bodies for heat sink mounting and have very high wattage ratings. Carbon Film Resistors :- This is the most general purpose, cheap resistor used in electrical and electronic circuits. Why are ICs so cheap? Why do ICs need small power for their operation?

ICs need small power due to their small size. Why are ICs more reliable than discrete circuits? What are the advantages of ICs over discrete component circuits? What are the important IC technologies used? IC technologies used are monolithic, thin- and thick-flim , and hybrid or multichip.

What is monolithic IC? In ICs the substrate is not employed as collector. Explain why? Posted on by 1 Comment. Leave a Reply Cancel reply Your email address will not be published.