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Results tagged with voltage
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user 323089
Voltage, otherwise known as electrical potential difference (denoted ∆V and measured in volts) is the difference in electric potential between two points (adapted from Wikipedia). Voltage can be constant (DC) or varying (AC).
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Is there any component that opens or closes at the exact defined or set voltage?
Check out, for example, the LM185/285/385 family of fixed and adjustable pseudo-zener-diodes.
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Why does the voltage drop in this circuit?
Because you are putting a DC load through your speaker that is large enough to drain your power supply. With a duty cycle of 50%, you are putting 0.56W of RMS power through an 8 Ohm load, but a consi …
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How do transmission lines carry both high voltage and low current
You are overlooking where voltage is increased. The voltage is increased between power line and the ground. … The voltage moving the charges is in direction of the power lines, as a voltage loss. This loss is proportional to the current flow. …
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LM358 voltage follower output voltage progressively lower than input voltage (Vcc is much hi...
A 10k pot will have a maximum impedance of 2.5k on the tap, so a handwavy 1.2k will be a compromise value (a digital pot as a voltage source has its downsides). …
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MOSFET protection scheme for voltage spikes
The circuit opens the MOSFET when VDS exceeds the sum of the Zener diode voltage, the forward biasing voltage of the normal diode, and the threshold voltage of the MOSFET. … high flyback voltage. …
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Can LM358 be replaced with AD8676
with one specified to work with 10V minimum voltage. … For 3.3V of supply voltage, you need low-voltage opamps, and with the kind of headroom you have available, they will typically need to be rail-to-rail (or beyond) on both input and output. …
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Can LM358 be replaced with AD8676
The AD8676 has 2.8nV/√Hz input-referred voltage noise, and 0.3pA/√Hz current noise. Now you supply your virtual ground to the positive opamp inputs with voltage dividers and no smoothing at all. … If you put the volume wiper in the middle, the right opamp gets to see 35k on its negative input, good for about 26nV/√Hz voltage noise of its own, plus about 10nV/√Hz of noise from the opamp current noise …
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Is it possible for a fuse to blow at extremely low temperatures?
The working principle of a fuse is how fast the heat generated by resistive heating can transfer outwards. The principal heat barrier is the confined radiation surface of the wire. The radiation bac …
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About the I1N1 = I2N2 equation
Well, zero net flux in an ideal transformer is like zero net voltage across an ideal conductor. … It doesn't mean that there is no output voltage (or no current through the ideal conductor), it merely means that there is no waste. …
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If a broken powerline touches the metal body of my car, can I touch any metal parts of my ca...
After a high voltage line breaks, it will likely get switched off within a short time span. It may remain dangerous since it might brush other lines that are still operative. … The current is "just" an order of magnitude larger than what a high voltage line might nominally run at. …
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Opamp virtual ground when power is removed
As the power rails come down, the input will likely get outside of the voltage interval between the power rails that constitute valid input. …
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Is Ohm's law really accurate?
Ohm's law defines resistance (which like position or inertia or temperature or voltage isn't an inherent physical entity but often enough a stable enough abstraction of some complex ensemble that working … Where dependable accuracy of reality is required, special precision resistors can provide them across significant ranges of voltage, temperature, operating frequency and other variables. …
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Can very high voltage and very low current AC produce strong magnetic flux in the coil?
Depending on how the power is divided into voltage and current, you need to split that copper into smaller or larger wires to have the current run around the magnetic core as often as it will stand for … given your available voltage. …
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