What are the differences between a MOSFET and a capacitor. The purpose of function?
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Re: Sorry to sound like a n00bie
MOSFET's supply power by reducing voltages. Capacitors smooth that power out and hold a small reserve for burst power usage.Ludicrous gibs!
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Re: Sorry to sound like a n00bie
Hmmmm ... MOSFETs can be used as amplifiers or switches. As an amplifier, a relative small signal controls a larger voltage or current. As a switch, the control voltage turns on or off a larger voltage or current. In the context of a VRM, the MOSFET is a switch that chops V(In), producing a square wave, which is rectified and filtered into a lower DC voltage. Controlling the duty cycle [T(On)/T(square wave)] controls the output voltage.
A capacitor is used to store energy and filter (smooth) a DC voltage. In a VRM the capacitor helps filter the square wave into DC, and handles current transients.PeteS in CA
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Re: Sorry to sound like a n00bie
BTW, no need to apologize for "basic" electronics Qs. We all start with the basics at some point in our lives.PeteS in CA
Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
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To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
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Re: Sorry to sound like a n00bie
MOSFETs
capacitor
typical capacitors on this forum
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Re: Sorry to sound like a n00bie
MOSFET= Metal Oxide Semi-conductor Field-Effect Transistor. So basically, a transistor"Its all about the boom....."
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Re: Sorry to sound like a n00bie
MOSFETs and JFETs (Junction FET) are voltage controlled devices, in which the gate current (other than charging gate capacitance) is tiny or less. Bi-polar transistors are current controlled devices, with the base curent, depending on the device, ranging from u-Amps to Amperes.PeteS in CA
Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
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