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terryds
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Is there any difference between RL vs LR circuit? Which one is for low-pass/high-pass filter?
Please help
Please help
They are one and the same.terryds said:Is there any difference between RL vs LR circuit? Which one is for low-pass/high-pass filter?
Please help
cnh1995 said:They are one and the same.
terryds said:Really? But RC and CR are different, RC is a low-pass filter and CR is a high-pass filter.
RL is high pass, LR is low pass. Brevity for its own sake is generally discouraged.terryds said:Is there any difference between RL vs LR circuit? Which one is for low-pass/high-pass filter?
why can I only find references to RL and not LR ?NascentOxygen said:RL is high pass, LR is low pass. Brevity for its own sake is generally discouraged.
These filters work by potential divider action. We can have series R and shunt L, giving high pass action, or the converse. We can also connect the filter either way round. It is important to consider the impedance (usually resistance) of the source and the load, so that we are considering the full circuit.davenn said:why can I only find references to RL and not LR ?
do you have any references please?
Frankly, I would not make any assumption about the actual layout of an LR or and RL circuit, if there was no information provided about how it has been connected. Wait till you see the circuit diagram and then you have a chance.NascentOxygen said:RL is high pass, LR is low pass. Brevity for its own sake is generally discouraged.
Personally, I wouldn't want to get involved in a system that appears to force a reader into such a bad choice with such open ended assumptions. The only thing one could say about RL or LR would be that the associated time constants would be the same. (Same comment for RC and CR)NascentOxygen said:in light of the answer options being given.
It shows that 'the system' actually has a certain amount of sense, perhaps.davenn said:why can I only find references to RL and not LR ?
The main difference between RL and LR circuits is the placement of the inductor and resistor. In an RL circuit, the inductor is placed before the resistor, while in an LR circuit, the resistor comes before the inductor. This difference affects the behavior and filtering capabilities of the circuits.
A low-pass filter is a type of electronic circuit that allows low-frequency signals to pass through while blocking high-frequency signals. It is commonly used in audio systems to remove unwanted noise and in power supplies to smooth out fluctuations in the output voltage.
A high-pass filter is the opposite of a low-pass filter, as it allows high-frequency signals to pass through while blocking low-frequency signals. It is often used in audio systems to remove low-frequency noise and in communication systems to transmit only high-frequency signals.
In an RL circuit, the inductor resists changes in the current, making it easier for low-frequency signals to pass through. This action effectively blocks high-frequency signals, making it a low-pass filter. On the other hand, in an LR circuit, the resistor resists changes in the voltage, making it easier for high-frequency signals to pass through. This makes it a high-pass filter.
RL and LR circuits have many practical applications, such as in audio systems, power supplies, and communication systems, as mentioned earlier. They are also used in electronic filters, which are used to remove unwanted frequencies from a signal. Additionally, they are used in electric motors and generators to control the flow of electricity.