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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
A diagram of a schematic drawing of a parallel circuit?
- Mark two points on your paper, a few inches apart.
- Draw the symbol for a battery or power supply that is connected to the two points.
- Draw the symbol for an electronic component, such as a capacitor, resistor, light bulb,
photocell, thyristor, thermistor etc., that is connected to the same two points.
- Draw the symbol for ANOTHER electronic component that is also connected to
the same two points.
- Now you have the diagram of a circuit with a power supply and two components
all in parallel.
Charge runs between the poles when you connect them with a circuit, or leaks out slowly through parasitic internal paths. Don't expect to light an LED very long, though there are configurations where a few seconds are possible. Of course they should not be self-heating, nor is it good for them to be subject to substantial heat from other sources
The potential difference across the bulb in a flashlight should be slightly lower than the terminal voltage of the batteries used to power the flashlight. This is because there is a small internal resistance in the batteries which causes a voltage drop across it.
Tests to check noise margin of CMOS gate?
To check the noise margin of a CMOS gate, one can perform voltage margining tests by applying different voltage levels to the input to determine at what point the gate switches its output. This can help assess the noise immunity of the gate. Additionally, one can perform a noise injection test by introducing simulated noise at the input to see how it affects the gate's output stability. These tests can help evaluate the robustness of the CMOS gate against noise.
for a fist amp its not bad but dont screw your subs over if you have good subs and a bad amp. go with hifonics or somthing good if willing to spend,
Because you're standing on the ground. But the bird contacts only the wire, so
there's no path through the bird for current to flow from the wire to anywhere else.
If they're in parallel, then each resistor acts as if it were the only one,
and the presence of any others is irrelevant.
The current through the 60-ohm resistor is I = E/R = (120/60) = 2 amperes.
What do you need to form an electric circuit?
Only a power source and a conducting path between its terminals.
If you need the circuit to accomplish anything useful, then there's typically
some sort of useful device in the conducting path, that uses power from the
source to do whatever it is that you need done.
What are the functions of execution unit in 8086 Intel?
Basically the function of execution unit in 8086 is to perform all arithmetic and logic operations.It tells the Bus Interface unit(BIU) where to fetch instructions and data from.It has 4 components:Control circuitry,ALU,Flag registers and general purpose registers.
1.control circuits-it directs all the internal operations.
2.ALU-performs all logic operations.
3.general purpose registers-used to store data during execution.
4.flag registers-it has a 16bit flag register containing 9 flags that are set for certain conditions during any operation.Ex.carry flag(whenever there is a carry).
It also has a decoder to decode the fetched instructions.
In which place an inductor store energy in it?
Because inductor forms a coil with magnetic field around it. It acts as a relay also. Tasleem
Similarities between combinational logic circuit and sequential logic circuit?
both combinational and sequential circuits have two inputs and outputs..!
How much voltage can a human being carry safely?
The voltage doesn't determine the danger. Your body gets charged up
to several thousand volts when you scuff across the carpet on a dry day ...
just before you come up behind your sister and zap her ... but if you know
what you're doing, you can kill yourself with a 12-volt car battery.
The danger depends on how much current flows through your body, and
on the path it takes. Something like 15 mA (0.015 Ampere) of current can
contract a muscle with enough force to break a bone, or can stop the heart.
The current, and the path it takes, depend on . . .
-- the voltage between two points on your body,
-- where the two points are, and
-- the resistance of the contacts with your body, i.e. how easily the
connection gets through your skin to the warm slithery juices inside.
What are the losses in resistors?
The power lost in a resistor is
(the current through the resistor) times (the resistance) watts. That's the same thing as
(the voltage across the resistor)/(the resistance)watts.
What is 7 trillion electron volts in mains voltage?
They're different things. An "electron volt" is not the same as a "volt".
An "electron volt" is an amount of energy. It's the work you have to do in order to
lift one electron to a place that's 1 volt more negative, and also the amount of
energy that one electron loses when it falls to a place that's 1 volt more positive.
"1 joule" of energy is the amount of energy you pay for if you use 1 watt for 1 second,
and that's about 6,250,000,000,000,000,000 electron volts of energy.
If you use 1,000 watts for 1 hour, you pay for 1 kilowatt-hour of energy. That's about
22,500,000,000,000,000,000,000,000 electron volts of energy, or 3.6 million joules.
It costs around 15¢ to 25¢ in most places.
The "7 trillion electron volts" in the question is something like the amount of energy
that you'd have to pay for if you used 1 watt for 0.00000112 second. It's not much.
Is DC is at low voltage than ac?
There's no correlation between the voltage, the current,
and whether the source is AC or DC.
Can you make a voltage multiplier to run a 180 volts dc motor with a 12volts battery?
You can't make a DC voltage multiplier at all. You'd have to use the battery
to power some sort of active power supply which, internally, would either
oscillate or switch to create changing voltage, then step the voltage up
through a transformer, then rectify and filter the higher-voltage AC, and
hand you the higher DC at its output.
You would use a significant and probably unacceptable percentage of the
battery energy just to run the power supply. In other words, the battery
would run the motor for an unreasonably short time before you would need
to replace or recharge the battery.
Look at the power requirement alone! If the 180V motor needs only 1 Amp
to run, then the motor is gorging on 180 watts of power. To deliver only that
much power at 12 volts, you would need to draw 15 Amperes from the battery,
and that doesn't even yet account for power lost in the intermediate power supply.
What is an example of a direct current?
A direct current (DC) is the continuous flow of electric current that circulates in one direction and keep the same polarity (positive or negative).
Example of direct current are batteries and generators.
There are electronic devices, like computers, that work with direct current, but they require of some additions to convert alternating current to direct current.
How do you identify terminals of fet transistor?
keep the notch facing u n frst terminal in anticlockwise direction is dummy thn nxt terminal is gate n drain n finally source
Switching speed is high for mosfet or bjt?
generally bjt is faster than fets...because of many intrinsic junction capacitances between ...source and drain and bulk and gate,,,..
but now a days due to advancement in scaling fet is reduced in size sooo much that it became faster than bjt...
mosfet is faster because of scaling. small channel length. even though it is slower but distance to be travelled is less
What does the fourth band on a resistor indicate?
It indicates how close the real resistance of the real resistor is guaranteed to be
to the numbers indicated by the first three bands.
Gold . . . within 5 percent higher or lower
Silver . . . within 10 percent higher or lower
No 4th band . . . within 20 percent higher or lower
What is voltage shunt amplifier?
In Voltage Shunt Amplifier, the Output voltage is supplied in parallel with the Input voltage through the feedback network.
its is an oject that can be used in a cicuit board, this object should allow an electric current to flow through it
