
How does a current mirror work? - Electrical Engineering Stack Exchange
May 6, 2023 · A current mirror consists of two cascaded "mirror" converters with heterogeneous inputs and outputs - current-to-voltage and voltage-to-current. The result is a current-to-current converter …
transistors - Current mirror: real-life examples? - Electrical ...
Jan 24, 2021 · I'm looking for examples of how current mirror is used in real life. Most tutorials cover the circuit itself but don't go into examples. Therefore, I'm still struggling to understand how it's used ...
Why do we use current mirrors? - Electrical Engineering Stack Exchange
Sep 11, 2016 · Current mirrors take a positive current (source) and generate a negative current (sink). Current mirrors have low input impedance, so the 'reference' current can be from a poor current …
mosfet - Why won't this new current mirror work? - Electrical ...
Oct 9, 2024 · A current mirror is a perfect current-to-current converter whose input maintains a constant voltage and whose output maintains a constant current. Therefore, we can drive it with an imperfect …
How to solve current mirror with emitter degeneration
Jun 14, 2024 · In the case of the current mirror without degeneration, variations in saturation current and emission coefficients lead to variations in base-emitter voltage vs collector current. And naked (no …
current - Wilson mirror operation - Electrical Engineering Stack Exchange
Dec 20, 2024 · In a simple current mirror, the output current is smaller than the input current by "two base currents" (Iout = Iin - 2Ib). In the Wilson current mirror, an additional transistor takes away "one …
circuit analysis - How do I analyze this complex current mirror ...
Apr 5, 2025 · How can I identify the current mirror pairs in this circuit and understand how current flows through them? What’s the correct method to adjust the (W/L) ratio of M2 to achieve a desired I_D, …
Why does current mirror need a diode connected configuration?
Oct 6, 2023 · A similar question to this is asked here but it is BJT based current mirror and the answer is there would be no path for base current: Why use diode connected BJT (and not just connect two …
Differences between current sources transistor and current mirror
The first, assuming well-match transistors, is merely a way to control two different current sources to the same value. The second is a current mirror as you say. The purpose of that is to have the current …
Current mirror with a load - Electrical Engineering Stack Exchange
May 30, 2018 · Every book I read explains the current mirror (two transistors, M1 and M2, of which one, M1, is diode connected) neglecting channel modulation. In this way, we get a current Iout = a * Iref …