Why do passive filters not provide current amplification?
Passive filters do not provide current amplification because passive filters are made up of passive components such as resistors, capacitors, and inductors and have no amplifying elements (ElectronicsTutorial, n.d.). Therefore, no signal gain and output level is always less than or never exceeds the input.
What is circuit isolation and why is not having any of a passive filter a disadvantage?
Circuit isolation provides a barrier using a mechanic switch to separate two circuits to prevent dangerous voltages from passing through the electrical circuit in the event of an electrical fault or failure in the system (AtlasScientific, 2022). The disadvantage of not having a passive filter is the circuit isolation will still allow any range of frequency to pass through the circuit.
What are first order and second order filter and what are their uses?
A first order filter can be made by connecting together a single resistor and a single capacitor/inductor in series across an input signal (Vin), with the output of the filter (Vout) taken from the junction of these two components (ElectronicsTutorial, n.d.). A second order filter will have two of either components, and the stability of the system is proportional to the order of the filter.
Passive Low Pass Filter. Electronics Tutorials. (n.d.). Retrieved from https://www.electronics-tutorials.ws/filter/filter_2.html
Links to an external site.
What is Electrical Isolation? (2022, June 8). [web log]. Retrieved from https://atlas-scientific.com/blog/what-is-electrical-isolation/.