Difference between revisions of "Common Electronic Components Overview"
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Capacitors are used to store and release an electrical charge. They will block DC while passing AC. They are frequency-dependent devices, which means that their capacitive reactance, or "effective resistance" to AC increases as the frequency gets lower. | Capacitors are used to store and release an electrical charge. They will block DC while passing AC. They are frequency-dependent devices, which means that their capacitive reactance, or "effective resistance" to AC increases as the frequency gets lower. | ||
| − | + | *Bypass cap | |
:A Bypass cap is a capacitor that is connected from the power supply to ground. It "bypasses" the AC signals to ground, while passing the DC supply through. This is used to make the DC supply rail "clean", or free from AC noise. | :A Bypass cap is a capacitor that is connected from the power supply to ground. It "bypasses" the AC signals to ground, while passing the DC supply through. This is used to make the DC supply rail "clean", or free from AC noise. | ||
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== Diode == | == Diode == | ||
== Inductor == | == Inductor == | ||
| + | An inductor is also known as a "choke." A choke is often used as a power supply filter. Inductors use a circuit element consisting of a coil of wire would on a core material made of ferrous or non-ferrous material. An inductor resists changes in the flow of electric current through it, because it generates a magnetic field that acts to oppose the flow of current through it, which means that the current cannot change instantaneously in the inductor. This property makes inductors very useful for filtering out residual ripple in a power supply, or for use in signal shaping filters. | ||
== Oscillator == | == Oscillator == | ||
Revision as of 16:42, 27 May 2007
Contents
Capacitor
Capacitors are used to store and release an electrical charge. They will block DC while passing AC. They are frequency-dependent devices, which means that their capacitive reactance, or "effective resistance" to AC increases as the frequency gets lower.
- Bypass cap
- A Bypass cap is a capacitor that is connected from the power supply to ground. It "bypasses" the AC signals to ground, while passing the DC supply through. This is used to make the DC supply rail "clean", or free from AC noise.
Diode
Inductor
An inductor is also known as a "choke." A choke is often used as a power supply filter. Inductors use a circuit element consisting of a coil of wire would on a core material made of ferrous or non-ferrous material. An inductor resists changes in the flow of electric current through it, because it generates a magnetic field that acts to oppose the flow of current through it, which means that the current cannot change instantaneously in the inductor. This property makes inductors very useful for filtering out residual ripple in a power supply, or for use in signal shaping filters.
Oscillator
Resistor
A a circuit element that presents a resistance to the flow of electric current. A current flowing through a resistance will create a voltage drop across that resistance in accordance with Ohm's law.
