Where can inductors be found?
Table of Contents
Where can inductors be found?
Applications of inductors can be seen in the following
- Tuning circuits.
- Sensors.
- Store energy in a device.
- Induction motors.
- Transformers.
- Filters.
- Chokes.
- Ferrite beads.
What is inductance in PCB?
Parasitic Capacitance and Inductance in Your Board Parasitic inductance is often taken as an afterthought in high speed design, power electronics, and even multiboard power systems or systems with high-strength wireless capabilities. Unfortunately, parasitic capacitance and inductance in a PCB are unavoidable.
Why are inductors rarely used in electronic circuits?
Inductors are used to be big. Compared to the sizes of all other devices in ICs (e.g. transistors) it is really HUGE. Making small inductor with desired characteristics is very expensive, so designers try to avoid using them.
How does an inductor operate?
An inductor is a passive electronic component which is capable of storing electrical energy in the form of magnetic energy. Basically, it uses a conductor that is wound into a coil, and when electricity flows into the coil from the left to the right, this will generate a magnetic field in the clockwise direction.
How do you find the inductance of a PCB trace?
Calculate the PCB trace inductance, or “L,” using the formula L = Zo * DLY. Using the example numbers: L = 20 x 10^-3 * 12 x 10^-12 = 240 x 10^-15 henries or 0.24 pH, where pH is units of picohenries. Traces on PCBs are small and therefore have small inductance levels.
How can PCB reduce inductance?
Minimizing Inductance
- Place as many high-speed ICs as possible on one of the two component layers (let’s say it’s the top).
- Arrange the power and ground planes so that they are adjacent and closer to the top layer.
- Place all the decoupling caps on the top layer so that they have short connections to the planes.
When should you use an inductor?
Inductors are primarily used in electrical power and electronic devices for these major purposes:
- Choking, blocking, attenuating, or filtering/smoothing high frequency noise in electrical circuits.
- Storing and transferring energy in power converters (dc-dc or ac-dc)
What is inductance and how does it affect PCB design?
When current flows through a conductor it becomes an inductor, when there is an inductor there is an electromagnetic field (EM). This can cause a variety of issues during PCB layout if you don’t plan properly, and sometimes we get burned even when we think we have planned for unwanted inductance and the effects that come with them.
What are PCBs and how do they affect you?
PCBs can accumulate in the leaves and above-ground parts of plants and food crops. They are also taken up into the bodies of small organisms and fish. As a result, people who ingest fish may be exposed to PCBs that have bioaccumulated in the fish they are ingesting.
Why do we use inductors in high speed devices?
If the high speed devices are driving capacitive loads, which themselves are resisting changes in voltage, even more instantaneous current is needed. Simply put, inductors resist a change of current, and can act as a low pass filter when in series with the signal or power supply flow.
Do inductors really dislike a change of current?
The demonstration is meant to show that inductors really do dislike a change of current, and use the energy stored in their flux to keep current flowing, even to the point of creating over 100 volts needed to ignite the nixie. Knowing the basics of inductance and capacitance are crucial for PCB designers.