What are the applications of an RC circuit?
The two fundamental applications/operations of RC circuits are as: filter circuits, in the frequency domain; as timing circuits, in the time domain.Given this, as virtually any interesting electronic circuit uses one or more of those fundamental operations, RC circuits are used in many applications: noise removers, delay lines, filters (high, low, band, notch, equalizers), signal coupling and bias decoupling in amplifiers, timers (the popular RC time constant…), sinusoidal and relaxation oscillators, etc… Think in any practical electronic circuit: almost certainly, you will find RC structures in it.The duality existent between capacitors (C) and inductors (L) means those operations can also be performed by a RL circuit; however, real inductors are quite more problematic to use and fabricate than practical capacitors due to its “imperfect” behavior, and inductors are generators/receivers of electromagnetic fields (shortly speaking, they behave as antennas in a much more serious way than capacitors), which means almost always an RC circuit is preferred over an RL circuit whenever one has the option to select.
Circuits: What do I do when impedance = undefined?
you get cases like this in ideal circuits under resonance. A plus j5 and minus j5 in parallel is an open circuit, while the same two impedences in series is a short circuit. If capacitors and inductances are used to derive these impedences, since the value is dependent on the frequency, the condition only occurs at one frequency. This is used to build filters, oscillators, and such. In reality, there is always a real component (resistance) which makes the open circuit a large but finite impedence, and the series circuit something with a low impedance.
Customer reports poor telephone communications when using a copper telephone line that also has a DSL se.....?
well with only those choices then the obvious answer is a faulty filter, or a line that has not properly been filtered... but that would not be the only cause of any troubles on the voice side of a DSL circuit... the first troubleshooting step that i would take would be to have the customer turn the modem off, or disconnect the modem from the phone line to see if it cleared up the trouble - if it did, then the trouble has been isolated to a DSL filter issue, in which case it will have to be determined what on the line has not been properly filtered - for cases where the DSL line is shared with an alarm system it is better to have a professional install the DSL filtering so that the alarm system can also be properly filtered... if the trouble still exists with the DSL modem disconnected, then advising the customer to plug a corded phone to the NID and check for the trouble there will isolate if the trouble exists inside or outside of the customers location... for troubles that still exist at the nid the phone company must come out to make the repairs - if the trouble goes away further troubleshooting needs to be done inside... static is normally caused by loose or corroded wires or jacks...
What type of faults can occur in capacitor short circuit or open circuit?
If the capacitor fully charged and by mistake two terminal of the capacitor get touch. Spark will be generated at touch point because of terminal resistance is approximately 0 and a large number of electron instantly start to flow toward positive terminals for discharging. It may damage the capacitor.If capacitor capacity high and by mistake two terminal gets touch, huge amount of energy discharge at touch point. if not used proper isolation glubs then it may harm operators.This concept is use to design jammer circuit use for energy meters testing.If the capacitor is open circuit then two conditions come into role:1) Capacitor connected in parallel: It not able to reduce fluctuation in DC supply.2) Capacitor connected in series: It just breaks the circuit path.