A Short Overview about Different Types of Electronic Resistors Resistors are the basic components in almost all types of electronic circuits. It controls the amount of electric current that flows through them. In addition, they also control the voltage in individual components connected to them. Different resistors are used for different applications. You can get in touch with reputed wholesale electronic resistor supplier in order to buy the electronic resistors that you need for your specific application. Different types of common electronic resistors used in different applications are briefly discussed in this article. Pull Up Resistors It is important that the input of a logic system is precisely settled or maintained at a welldefined and a fixed logic value under all conditions in an electronic circuit. These circuits have three possible states, which is high impedance, low, and high. It is essential to understand that the high impedance state occurs when a pin is left floating. In logic circuits, the pull-up resistor is precisely used to ensure that a pin is precisely pulled to logic high in the absence of an input signal. These types of resistors are used in various microcontrollers that are used in various embedded systems that are the realtime system. One of the common methods of ensuring that the inputs of digital logic gates and circuits cannot self-bias and float about is either connect the unused pin directly to ground (0V) for a constant low “0� input. One way to overcome this issue is to use a pull-up resistor from a reputed and well-known wholesale electronic resistor supplier, which is connected between the input pin and the supply rail. Pull Down Resistors The applications of pull-down resistors are similar to pull up resistor except that it pulls the input pin to logic low initially. The pull-down resistors also work in the same way as to pull up resistor. They pull the pin to a low value. They are connected between a particular pin on a microcontroller and the ground terminals. Current Limiting Resistors A process of setting an upper limit to the amount of current that flows through a component or a circuit is known as current limiting. The primary purpose of limiting the current is to effectively avoid effects like a short circuit. In such a situation, resistors can be used as current liming devices. Light Emitting Diode (LED) is one of the best
examples of current limiting resistors. It will burn out too fast if too much current is going through your LED. The current will not be enough to light up the LED if too little current is going through it. Transistor Biasing Resistors It is a bipolar transistor with a bias network consisting of a series base resistor and a base-emitter resistor. Transistor biasing resistors help reduce the number of external components required with a bias resistor built into the transistor. It simplifies a discrete circuit configuration and is used for switching applications.
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