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A current mirror is a circuit designed to copy a current through one active device by controlling the current in another active device of a circuit, keeping the output current constant regardless of loading. The current being "copied" can be, and sometimes is, a varying signal current.
The mirror circuit of Fig. 5 forces the drain current of M1 to equal the input current and the output configuration assures that the output current equals the drain current of M2. Expanding equation (8) in a two-variable Taylor series about i D 1 {\displaystyle \scriptstyle i_{D1}} and truncating after the first linear term, leads to an ...
Most commonly the active load is the output part of a current mirror [1] and is represented in an idealized manner as a current source. Usually, it is only a constant-current resistor that is a part of the whole current source including a constant voltage source as well (the power supply V CC on the figures below).
Diagram of a RAID 1 setup. RAID 1 consists of an exact copy (or mirror) of a set of data on two or more disks; a classic RAID 1 mirrored pair contains two disks.This configuration offers no parity, striping, or spanning of disk space across multiple disks, since the data is mirrored on all disks belonging to the array, and the array can only be as big as the smallest member disk.
At first sight, the current mirror looks a simple bare circuit (Fig. 1); but actually, it is an odd, strange and exotic circuit that is never explained (if you know sources that have revealed the philosophy of the basic current mirror circuit, please cite them here; I have not managed to find such sources, I have found only some guesswork).
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Electrochromic mirrors use a combination of optoelectronic sensors and complex electronics that monitor both ambient light and the intensity of the light shining on the surface. As soon as glare makes contact with the surface, these mirrors automatically dim reflections of flashing light from following vehicles at night so that a driver can see ...
[5]: §4.2.6 A cable of about 5 meters (16 feet) can be manufactured to Category 1 specifications easily and inexpensively by using 28 AWG (0.081 mm 2) conductors. [70] With better quality construction and materials, including 24 AWG (0.205 mm 2 ) conductors, an HDMI cable can reach lengths of up to 15 meters (49 feet). [ 70 ]