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Circuits
Overachieving and under-appreciated, circuits are the foundation that our technological society is built on. Now's your chance to find out not only how they work, but why. Questions regarding the physics behind voltage, resistance, capacitance, inductance, transistors, LEDs, switches, and power supplies; and how they're used to create analog and digital circuits, should be directed here.
1,646 Questions
What provides energy to circuit?
One possibility for what affects the voltage,
is how many light bulbs, motors etc you have in the circuit causing the energy ( voltage ) to be shared.
What board holds microchips or integrated circuits and the circuitry that connects these chips?
The board that holds microchips and electronic circuity is called a printed circuit board (PCB).
More information: http://en.wikipedia.org/wiki/Printed_circuit_board
I do not agree with the above answer... i believe the correct answer you are looking for is an "adapter card".
What is vaccume circuit breaker?
In VCB, The two contacts are present in a vaccum, When there is a fault these contacts are forced to open resulting arch ,as all we know arch does not flow through Vaccum so it extinguishes thus vcb seperates two circuits.
Can you change a 470 microfarad 16 volts capacitor with a 470 microfarad 35 volts?
C=Q/V12 where Q/ V12 is the Charge per Potential Difference between the plates of the capacitor. If you solve for Q, you see that the charge is proportional to this potential difference. You are likely to surpass your load requirements by increasing the charge/discharge amplitude with the 35 volt cap. In other words, your cap will charge up to 35 volts and then discharge that 35 volts onto your load that was set at resonance to operate with 16 volts discharging. Any separation of circuits using this cap would probably fry something on one side or the other over time. Hope this helps.
The circuitry of the system unit usually is part of or is connected to a circuit board called the?
External to the main board of circuitry is the power supply ... in computers additional sub-modules complete the overall system ie. a computer (this sometimes includes a visual display unit , VDU (ie. LCD display) ) and may incorporate a display.
What are the advantages of PMOS and NMOS?
* reduce the complexity of the circuit
* low static power consumption
* high noise immunity
* high density of logic function on a chip
The most important advantage of CMOS is the very low static power consumption in compare with NMOS technology. On the other hand, CMOS technology is more complex to fabricate then NMOS technology, so it is more expensive. However, almost every todays digital circuits are CMOS. You want to use NMOS only when you want to fabricate fast and low-cost a simple circuit. The most important advantage of CMOS is the very low static power consumption in compare with NMOS technology. On the other hand, CMOS technology is more complex to fabricate then NMOS technology, so it is more expensive. However, almost every todays digital circuits are CMOS. You want to use NMOS only when you want to fabricate fast and low-cost a simple circuit.
What keeps the CMOS data current and up to date?
The data is CMOS is on a chip called RAM. RAM will lose data when it loses power. A small battery on the motherboard is used to keep continuous power to CMOS when the PC loses power.
What is a multiply contact relay?
It is a type of relay used to read the status of Breakers as well as isolators in scada system. As RTU operates at a voltage of 48V and Control panel operates at 110v inoredr to differentiate these potentials it is used
What is one important thing transistors do?
Transistor is the building block for the processor. Without the transistor, some say our servers would be three stories high, and laptops would be a prop on Star Trek. Our televisions would still use vacuum tubes, and our cars couldn't guide us to the nearest Indian restaurant.
without the transistor, what would the digital economy look like? Would Microsoft Corp. and Google Inc. have become giants? Would geeks have become cool, rich guys driving BMWs?
How do you find out how many amps your battery is putting out?
Amperage is a rate of electrical flow. In a battery-powered electrical circuit, as in almost any circuit, the current flow is a factor of the load, not the supply. For example, a battery powering 2 bulbs in parallel will supply a flow double that with a load of one bulb. The measured amperes from the battery would be double. While any battery has a maximum discharge rate, this is rarely reached when used as designed. When a battery-powered device is operating with the specified battery, it will draw power from the battery at just the rate (amperage) it needs. Batteries are, however, rated as to how long they will produce a current of a stated amperage. This rating reflects the total capacity of the battery. The units of this rating are commonly milliamp-hours, or mAh. For example, a particular rechargeable cordless-phone battery is rated at 800 mAh. This means the battery can store enough energy to release 800 mA per hour for 1 hour; or it could release 1 mA per hour for 800 hours; etc. (Not every battery is tagged with this information, but the manufacturer can provide it.) Therefore, selecting a battery is a matter of choosing one that:
- is rated at exactly the voltage the device specifies
- has the best mAh rating for the price
- fits the device properly and has the matching connections needed.
Then just be certain to install the battery in the proper direction, matching the stated polarity expected. (Match the "+" end of the battery to the "+" contact, and "-" to "-".) Caution: We have to consider maximum source amperage when powering equipment from line power sources, such as a wall plug or a power transformer plugged in to the wall. In this case, be certain the total specified power draw (in amperes or milliamperes) does not exceed the maximum amperage rating of the source. For example, your breaker box will likely trip if the total power draw from a room's wall plugs exceeds 15 A. And an overloaded power adapter (wall transformer) will overheat or perhaps burn if powering a device that demands more power (milliamps or amps) than it is rated to provide.
What are some practical uses of diodes?
Diodes are largely used for changing AC into DC. A half wave diode bridge will use two diodes for this purpose. A full wave bridge uses four diodes to accomplish this task.
See related links below.
What causes a capacitor to blow?
Capacitors can fail for a few reasons, and sometimes the do "blow".
Capacitors have voltage limitations which, if they are exceeded may cause internal arcing or flashover. Once initiated, arcing can cause sudden heating and if the circuit supports high enough energy the capacitor can be damaged and may actually come apart. For polarized capacitors, reversing the polarity may even result in catastrophic failure at normal voltage levels.
Another reason capacitors fail is as a result of high current. If a capacitor is subjected to high frequency currents of sufficient magnitude internal heating can result and once again damage will result. With enough energy it may come apart.
One last way capacitors may be damaged is through sudden discharge. Generally high voltage ceramic capacitors may be charged to high energy levels. With a sudden discharge ceramic capacitors can respond with a piezoelectric effect and the ceramic may actually shatter.
Why is a fuse wire necessary in a circuit?
a fuse wire melts when current passing through it exceeds a certain value as in overloading and short circuiting .this breaks the circuit prventing further current flow and damage ..
Can you connect 460Vac motor to 480Vac circuit?
Yes, the 440 volt motor is withing the 10% voltage range of the 460 volt group. When the supply is said to be 480 volts, usually it is lower than what it is stated to be. Once the motor is connected check the current against the motor's nameplate amperage.
Why is a torch switch important in a circuit?
A switch in a circuit will quickly allow you to break the circuit, without changing the wiring. For example, a light switch. By turning a light switch off, you are breaking the circuit and, thus, turning the light off.
Is electric current and current the same thing?
Not really. You can compare them with the analogy of water flowing through a pipe. For water to flow, there must be a pressure difference across the ends of the pipe. An electric current is a movement of electric charges along a conductor. For those charges to move, there must be a voltage (more accurately, a 'potential difference') across the ends of the conductor. So a potential difference is required to cause current to flow.
How much voltage goes into a home?
Different countries have different standards for their residential electric utility supply.
In the USA and Canada, it's 120 volts, 60 Hz AC.
Among the European, African, and Asian nations, there are several different standards.
What is the advantage and disadvantage of digital vs analog?
Digital devices are easier to read Digital devices are easier to calibrate Digital devices are more accurate than its analog counterparts Digital devices are based on boolean algebra, an exciting aspect of mathematics, thus easy to analyse and design Digital devices allows for compacting. For example a lot of digital componets can be compressed into a small sized IC, thus making it possible to create devices like laptops, handsets etc Digital devices are generally lighter than its analog counterparts
How do you produce electricity with potatoes?
Potatoes, like lemons, have a small amount of acid that conducts electricity, but only for a very small light bulb Potatoes, like lemons, have a small amount of acid that produces eletricity for a very small light source.
Explain how the components of an electrochemical cell produce voltage?
chemical reactions occur between the electrolyte and the electrodes in an electrochemical cell.these reactions cause one eletrode to become negatively charged and other eletrode to become positively charged
How do you find open circuit voltage in circuit?
"Open circuit voltage" is a characteristic of a battery or power supply.
You measure it exactly as the term suggests ... disconnect any load
from it (or open the ON/OFF switch), and measure the voltage across
the terminals of the battery or power supply while it's not supplying
current to anything.
