Applications of Diodes
A diode is a two terminal device, widely used in the field of electronics. The smallest of circuits, to the largest, have diodes in them, in one form or the other. The function of the diodes can be explained by using an analogy of an air pump, which only allows the flow of air in one direction. Similarly a diode only allows the circuit to pass current through in one direction; this is done in two conditions. The conditions are a) Forward Bias or b) Reverse Bias
Forward Bias:
In this case the circuit is connected in a way that the positive terminal of the battery is connected to the positive terminal of the diode, and the negative terminal of the battery is connected to the negative terminal of the diode. In this
…show more content…
Reverse Bias:
In this case the circuit is connected in a way that the positive terminal of the battery is connected to the negative terminal of the diode, and the negative terminal of the battery is connected to the positive terminal of the diode. In this condition the current does not travel through the circuit, and provides infinite resistance.
In this condition the diode acts like a closed door and no current pass through.
The following diagram can further explain the functions of a diode when connected in reverse bias
This figure shows us how current cannot pass through a Diode which is connected in reverse bias.
Diodes come in different shapes, sizes, and types. Each type of a diode has its own applications.
Some of the most widely used diodes are mentioned in the following list
Types of diodes
Semiconductor Diodes
Light Emitting Diodes – LED
Photo Diode
Ideal Diode (Theoretical)
Zener Diodes
Diodes come in different variations and each of them has their own use, today we will be looking into the applications of diodes. We will have a detailed look on how diodes can be used as:
• Logic Gates
• Sensors
• LED (Light Emitting
The pump exchanges three sodium molecules for two potassium molecules. In doing so an electrical gradient is formed across the basolateral membrane of the cell due to the imbalance of charge generated. The interior of the cell is negative by about 80mV in relation to the outside...
When symbols are wrote this way, it will represent the opposite of the original symbol.
the biases of the one who observes it. You can then draw a similar parallel to
5) Gated channels are used to facilitate the movement of molecules from one side of a membrane to another and are necessary for facilitated diffusion. A gated channel can be open, closed, or in an intermediate state, and are controlled by change in membrane voltage, and differs from active by not requiring additional ATP for movement like active transport. Gated channels are exactly what they sound like, a channel that is controlled by a gate or regulator that will allow the movement of specific molecules in and out of cells. Gated channel facilitated diffusion relies on channel proteins, that form hydrophilic channels which allow the movement water and piggybacking ions through a membrane. An example of a gated channel is the importation of
The beginning of the passage has a positive
All throughout American history there has many intelligent individuals that have played significant role in our society. I believe Thomas Edison has been one of the most influential people. He was an American inventor who is considered one of America’s leading businessman. People today credit him for helping to build America’s economy during the nation’s vulnerable early years. Thomas had a very good childhood and was a very hard worker as a teenager. He invented the universal stock printer and he perfected the lightbulb.
Clostridium Difficile, also known in the medical community as C. diff, is a multi-drug resistant organism that can cause symptoms ranging from mild diarrhea to life threatening kidney failure. Typically known to only affect older adults who are being cared for in a hospital or long-term care facility and who had recently been taking antibiotic mediations, C. diff is shown to be increasing in younger, healthier individuals who have no previous antibiotic use or health care setting exposure. As nurses the idea that we could be exposing patients to C. diff is alarming.
In their inactive state neurons have a negative potential, called the resting membrane potential. Action potentials changes the transmembrane potential from negative to positive. Action potentials are carried along axons, and are the basis for "information transportation" from one cell in the nervous system to another. Other types of electrical signals are possible, but we'll focus on action potentials. These electrical signals arise from ion fluxes produced by nerve cell membranes that are selectively permeable to different ions.
Batteries where the chemicals cannot be returned to their original form once the energy has been converted (that is, batteries that have been discharged) are called primary cells or voltaic cells. Batteries in which the chemicals can be returned to its original form by passing an electric current through them in the direction opposite that of normal cell operation are called secondary cells, rechargeable cells, storage cells, or accumulators.
The antiport brings a molecule inside of the cell at the same time it brings a molecule outside of the cell. Anti means opposite and port means carry. Sodium-potassium exchange pump is an example of an antiporter. This is because of the breakdown of ATP. Three sodium ions bind to protein inside of the cell (cytoplasm side) ATP, then binds to the protein which causes phosphorylation. Then the phosphorylation exchanges the three sodium ions for two potassium ions.
Inversely, to decrease I, R must increase. The value of R depends on how easy it is for the electric charge to pass through the conductor. Therefore to decrease R, the passage must be made easier and to
This graph shows the result that I expect to get, I expect to see a
Direct current only flows in one direction in a circuit. Because the polarity of a direct current voltage source is always the same the flow of current never changes direction. Batteries are one of the more common direct current voltage sources. Batteries are good because their voltage is fixed as well as their polarity. Direct current dose not always need to a constant voltage but it must always stay traveling in the same direction. There are such direct currents called varying and pulsating that change value but not direction.
Humans these days take electricity for granted. We don’t truly understand what life was like without it. Most young adults will tell you their life does not depend on electricity, but they aren’t fooling anyone. They all know that their life depends on electricity; whether it’s television, their phone, Google, or the lights in their house. We need to stop taking those things for granted and give credit where credit is due. That is why I chose to write about the scientists who contributed to the discovery of electricity, which then helped modern scientists fuel the electricity phenomenons we now have today.