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I need a clean, passive low-pass filter designed around standard resistor-capacitor (RC) components. The target cutoff is comfortably below 1 kHz, so I expect calculations that clearly show the ‑3 dB point in that region and justify the chosen values. Please deliver: • A schematic with labelled part values • The formula walkthrough that leads to those values (including impedance considerations) • A brief frequency-response plot or SPICE simulation screenshot confirming the roll-off Keep the layout simple enough for through-hole assembly and aim for readily available E12 series parts. If you like working in LTspice, Multisim, or a similar tool, feel free—the files are welcome alongside a PDF or image of the final circuit.
Project ID: 40667822
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35 freelancers are bidding on average $507 USD for this job

With a Master's in Electrical Engineering and over 8 years as a Verified PCB Designer, I have the expertise needed to develop a high-quality RC low-pass filter that meets your specifications. My portfolio showcases my proficiency with Eagle, Altium, KiCAD, EasyEDA, and other tools needed for schematic design and using readily available E12 series parts for through-hole assembly. Working diligently on impedance considerations, I will provide you with a formula walkthrough and frequency-response plot or if you prefer SPICE simulation screenshot, justifying all my proposed component values. My grasp of Mathematics (including Calculus, Differential Equations and Linear Algebra) and proficiency in using MATLAB/SIMULINK make signal processing and advanced engineering design second nature to me. Ensuring that our collaboration is smooth, I maintain an open line of communication meaning that you can track the progress of the task anytime. As one of the top 1% in this field, your satisfaction is guaranteed in terms of quality and timely delivery. Let's bring this project to life by turning those ideas into a tangible reality. Feel free to reach out to me for any further questions or a detailed discussion regarding your project specifics; I'm here for you 24/7.
$505 USD in 7 days
7.0
7.0

Drawing on my diverse expertise that spans mechanical, electrical, and software engineering, I'm confident in offering you a holistic solution to your RC low-pass filter design. In electronics, I have successfully designed and implemented a plethora of custom circuits utilizing common components like resistors and capacitors. I'll devise a straightforward layout that not only meets your requirements but can also be easily assembled using E12 series parts. My understanding of impedance considerations will enable me to perform meticulous calculations for the chosen values, clearly demonstrating the -3 dB point at comfortably below 1 kHz. As someone who loves working with simulation tools like LTspice and Multisim, you can trust that the final schematic along with a walkthrough of the formula and an accompanying frequency-response plot or SPICE simulation output will be delivered to you in a clear and precise manner. An added advantage of working with me is my systems-level perspective. I don't consider just one aspect of a project; instead, I focus on creating unified, cost-effective designs that take into account real-life constraints such as material costs and fabrication methods. So let's turn your concept into reality using a lens that considers the entire system – mechanical, electrical and electronic!
$3,000 USD in 25 days
6.7
6.7

Proposal ⭐⭐⭐⭐⭐ I can design and document this as a straightforward, production-friendly passive RC low-pass filter using readily available E12 components. For example, an initial E12 solution of 1.8 kΩ + 100 nF gives a theoretical cutoff of approximately 884 Hz, placing the -3 dB point comfortably below 1 kHz. I would verify the final value against your actual source and load impedances, since those can shift the effective cutoff and attenuation. Deliverables will include: • Clearly labelled schematic with component values • Step-by-step fc=1/(2πRC) calculation • Source/load impedance considerations • Frequency-response plot or LTspice/SPICE simulation • Through-hole-friendly component selection using E12 values • Native simulation/design files if useful I’ll also show the expected attenuation at relevant frequencies so the result is easy to validate rather than providing only the nominal cutoff calculation. If you provide the source impedance and load/input impedance, I can size the RC network around the real circuit rather than treating it as an ideal unloaded filter.
$505 USD in 7 days
5.6
5.6

Hi, I am ready to design a clean, passive RC low-pass filter with a cutoff comfortably below 1 kHz, delivering full calculations, SPICE-verified frequency response, and a through-hole-friendly layout using E12 series parts, in compliance with IEC 60063 preferred-value standards. Project Deliverables: Schematic with labelled part values Formula walkthrough with impedance considerations Frequency-response plot SPICE simulation screenshot Could you please clarify: Q: What is your exact target cutoff frequency, and is there a specific source/load impedance the filter needs to interface with? Q: Do you need a single-pole (first-order) filter, or a specific roll-off steepness? Over 7 years of experience in analog circuit design. Similar projects I have done: Passive RC Low-Pass Filter Design with SPICE-Verified Frequency Response Analog Filter Calculation and Component Selection for a Through-Hole Prototype Board Software I can use: LTspice My portfolio of relevant analog filter design samples is attached below. I am ready to start immediately and look forward to your target cutoff frequency and impedance details. Thank you! Warm regards, Abubakar
$505 USD in 7 days
5.1
5.1

Hello, I’m a Senior Electronics & Embedded Engineer with a Master’s degree in Electrical/Electronics Engineering and over 8 years of experience in electronics design and development. My core expertise includes: • Analog and digital circuit design • Embedded systems and firmware development using STM32, ESP32, and microcontrollers • FPGA and VHDL development • DC-DC and DC-AC converter design • Power electronics and power supply design • PCB design using Altium Designer • Signal processing and hardware development • Circuit simulation using LTspice and PSpice • Hardware debugging, testing, and optimization I can handle projects from requirements analysis and initial concept through circuit design, simulation, PCB design, firmware development, prototyping, testing, and final documentation. My focus is on delivering practical, reliable, and production-oriented engineering solutions that meet project requirements and real-world constraints. Examples of my previous projects and technical work are available in my portfolio, where you can review my experience and capabilities.
$600 USD in 5 days
5.1
5.1

The cutoff frequency calculation for a passive RC low-pass filter is straightforward, but selecting specific resistor and capacitor values that meet the below 1 kHz target, use E12 series parts, and are suitable for through-hole assembly is the real constraint here. I will use standard formulas for RC filters, calculating R and C values to achieve a cutoff well below 1 kHz. For example, I can select a common capacitor value like 100nF and then calculate the necessary resistor value, or vice-versa, aiming for readily available E12 series components. The schematic will clearly label these chosen R and C values. The formula walkthrough will show the impedance considerations and the derivation of the chosen R and C values based on the target cutoff. I will also include a frequency response plot from LTspice, showing the calculated roll-off. The brief does not specify the source impedance of the signal driving the filter or the load impedance it will feed into. I will assume a nominal source impedance of 50 ohms and a high load impedance (at least 10 times the source impedance) for the calculations. For what it's worth, every job I have taken on Freelancer has gone out on time and on budget, 100% on both. What is the impedance of the source driving this filter? Send over the job award so I can start.
$726 USD in 21 days
3.7
3.7

Hello, I can design your passive RC low-pass filter with a cutoff comfortably below 1 kHz using readily available E12 through-hole resistor and capacitor values. I will use LTspice to design and verify the circuit. I’ll calculate the component values using (f_c = 1/(2\pi RC)), check source/load impedance effects, and then run an AC frequency sweep to confirm the -3 dB cutoff point and roll-off. You will receive: A clean schematic with labelled R and C values Complete cutoff-frequency and impedance calculations LTspice frequency-response simulation/plot Source LTspice files PDF/image of the final circuit and results The design will be simple, practical, and suitable for easy through-hole assembly.
$150 USD in 5 days
3.8
3.8

I can design this clean, passive first-order RC low-pass filter using readily available E12 through-hole components and provide the complete calculation and verification package. Deliverables Clear schematic with labelled resistor and capacitor values Full cutoff-frequency calculation and component-selection walkthrough Source/load impedance considerations Frequency-response/Bode plot or LTspice simulation confirming the −3 dB cutoff below 1 kHz LTspice simulation files if required PDF/image of the final circuit
$200 USD in 3 days
3.3
3.3

Hello, I can design this RC low-pass filter with practical E12 component values and verify the real cutoff frequency including source and load impedance, not only the ideal (f_c = 1/(2\pi RC)) calculation. I will provide a clearly labelled schematic, step-by-step value selection, impedance/loading considerations, and an LTspice frequency sweep showing the -3 dB point and attenuation slope. The circuit can be kept fully passive and through-hole friendly using commonly available resistor and capacitor values. If required, I can also compare one-pole and cascaded RC options depending on how steep you need the roll-off below 1 kHz. Let's discuss the required cutoff frequency, source impedance, and load impedance. Best regards, Nichita
$505 USD in 7 days
3.0
3.0

I’d be happy to handle your RC low-pass filter design. I can design the circuit using standard E12 resistor and capacitor values, with a cutoff frequency comfortably below 1 kHz. I will provide: • Clearly labelled schematic with component values • Complete RC cutoff-frequency calculations and impedance considerations • -3 dB cutoff verification • Frequency-response plot / LTspice simulation • Simple through-hole-friendly design using readily available components • PDF/image documentation and simulation files if required I’ll ensure the calculations and simulation results match the selected component values and deliver the work accurately and professionally within the required timeline. Give me one opportunity to handle your project. I assure you of high-quality, accurate work and timely delivery.
$450 USD in 5 days
1.2
1.2

Passive RC low-pass filter with E12-ready through-hole parts; clear -3 dB cutoff comfortably below 1 kHz; and a proof plot/simulation screenshot. I’ll select R and C using the standard single-pole relationship, include impedance considerations for the load, and show the math step-by-step until the targeted corner frequency is met. Using your desired cutoff, I’ll justify component choices and tolerance impact (E12 series) for reliable roll-off. Deliverables: labeled schematic (PDF) plus LTspice/Multisim file, and a brief frequency-response result (Bode magnitude with -3 dB marker). Example workflow: for a simple RC low-pass, fc = 1/(2πRC), so f-3dB ≈ fc; if the next-stage input/load resistance RL loads the RC, I’ll use the equivalent R seen by C (Req = R || RL) so fc ≈ 1/(2πReqC). I’ll confirm the simulated magnitude curve matches the calculated corner. Share your load/input impedance range and desired cutoff (e.g.
$505 USD in 7 days
0.0
0.0

I will apply my skills in RC circuit design, filter/signal analysis, and SPICE-based verification to deliver a clean passive low-pass filter with a cutoff comfortably below 1 kHz. As an FPGA & digital electronics engineer, I’m used to precision noise-control work, so the -3 dB point will be explicitly calculated and justified with impedance considerations for realistic loading. I’ll design a through-hole RC topology using readily available E12 values (I can also widen to nearest standard where needed). You’ll receive a labeled schematic, a step-by-step formula walkthrough deriving the pole frequency and the -3 dB condition (including how source/load resistance affects the effective cutoff), plus a short note on component tolerances. For confirmation, I’ll run an LTspice or Multisim simulation and provide either a frequency-response plot or a screenshot demonstrating the roll-off in the target region. Files (e.g., .cir) plus a PDF/image of the final circuit will be included.
$505 USD in 7 days
0.0
0.0

RC low-pass filter design with an explicit –3 dB target: I’ll calculate a passive 1‑pole RC network with fc comfortably below 1 kHz, using E12-ready values and showing the impedance context (R is the effective load seen by C, and the output is across C). I’ll derive fc = 1/(2πRC) and verify the –3 dB condition from |Vout/Vin| = 1/√(1+(f/fc)^2), including any series resistance/load interaction that could shift fc. Deliverables: (1) a labeled through‑hole schematic with selected R and C part numbers/values; (2) a step-by-step formula walkthrough leading to those values and roll‑off justification; (3) a brief frequency-response plot or LTspice/Multisim simulation screenshot confirming attenuation in the sub‑kHz region. LTspice project files can be included for repeatability. If you share your intended load/output impedance (or confirm it’s high/typical), I’ll finalize the exact resistor choice and return the schematic plus simulation for your review—ready for quick verification.
$505 USD in 7 days
0.0
0.0

Designing a passive RC low‑pass filter is simply choosing R and C so the circuit hits the desired -3 dB cutoff well under 1 kHz. I’ll calculate the time/impedance behavior using the correct -3 dB condition for a standard RC topology (series R, shunt C to ground), with notes on loading and source/output impedance assumptions. You’ll receive: a clean handoff schematic (through‑hole friendly) with labeled E12 values, a step‑by‑step formula walkthrough deriving fc and the -3 dB point in the sub‑1 kHz region, and a brief frequency response confirmation via SPICE (LTspice preferred) or an equivalent simulation screenshot. If you prefer, I’ll also provide the LTspice file plus a PDF of the final circuit with component selections and tolerances. Tell me your expected input impedance/source resistance and load impedance (or confirm ideal assumptions), and I’ll propose the exact R/C values and simulation results for approval.
$505 USD in 7 days
0.0
0.0

Need the RC low-pass filter settled fast—your cutoff must sit clearly below 1 kHz, so we can lock values quickly and verify the -3 dB point in the same region. I’ll design a simple, passive, through-hole friendly RC network using E12-standard resistors/capacitors, then document exactly why each choice fits the target behavior. Deliverables: (1) labeled schematic with resistor/capacitor values and component orientation; (2) full formula walkthrough, including f_c, -3 dB derivation, and impedance considerations (load/parallel resistance impact on effective R); (3) frequency response confirmation via LTspice/Multisim simulation (or an equivalent SPICE run), with a plot/screenshot showing roll-off below 1 kHz. I can attach the project files plus a clean PDF/image of the final circuit. Send the exact target cutoff (or desired attenuation at any frequency) and any load/driver impedance; I’ll return the computed design and simulation for your approval.
$505 USD in 7 days
0.0
0.0

With the diverse experience I have gained over the past decade-plus, including a deep background in Electrical Engineering, I assure you of a stellar result for your RC Low-Pass Filter Design project. Though primarily specializing in web and app development, I am no stranger to opening the circuit board and employing my expertise with electronics. In fact, in my freelancing career, I've had multiple projects involving electrical engineering and electronic systems design. My grasp of the ins and outs of the subject matter includes extensive skill in complexities like impedance considerations and formula walkthroughs, attributes which would prove invaluable in this project. Considering your requirement for readily available E12 series parts, my Multisim proficiency would be beneficial for precise calculations and practical solutions. Moreover, I will gladly provide a frequency-response plot or SPICE simulation screenshot to validate the results obtained from the parameters you provided. In conclusion, collaborating with me guarantees not only experienced problem-solving skills but also qualitative time adherence and long-term support. I am confident the project’s output will exceed your expectations, proving that outstanding engineering can be brought from any field to another with due expertise and diligence. Let's make your circuit resonate harmoniously; choose me for the excellence-driven outcome you deserve!
$505 USD in 7 days
0.0
0.0

Hello I can design and verify the required passive RC low-pass filter with a cutoff frequency comfortably below 1 kHz. For the proposed design, I will use readily available E12-series components and provide: • Clearly labelled RC schematic with component values • Complete step-by-step cutoff-frequency calculations • Impedance analysis and explanation of loading considerations • Verification of the −3 dB cutoff point • Frequency-response and phase-response plots • LTspice-compatible simulation circuit and analysis • Component/BOM information suitable for through-hole assembly • Clean, professionally formatted documentation A suitable initial design is R = 1.8 kΩ and C = 100 nF, giving a theoretical cutoff frequency of approximately 884 Hz. I will make sure the final design is simple, practical, and easy to reproduce, while clearly documenting the assumptions and calculations. I can deliver the complete design and simulation files in an organized format. Thank you for considering my proposal. I look forward to working with you.
$505 USD in 7 days
0.0
0.0

Hi , This is a straightforward RC filter design, but the important part is selecting values that give the required cutoff while also accounting for the source and load impedances so the real −3 dB point matches the calculation. I can design a simple passive low-pass filter using readily available E12 resistor and capacitor values, with through-hole-friendly parts and a clean schematic. I’ll provide the full cutoff calculation using (f_c = 1/(2\pi RC)), explain the impedance assumptions, and verify the final design with an LTspice or equivalent AC sweep. You’ll receive: • Labelled schematic with component values • Step-by-step calculation and impedance notes • Frequency-response/Bode plot confirming cutoff and roll-off • SPICE simulation file if required • PDF/image documentation suitable for assembly I’m comfortable with analog circuit design, RC filtering, SPICE simulation, component selection, and practical PCB/prototyping considerations. Happy to deliver a simple, well-documented design that can be assembled and tested easily.
$505 USD in 7 days
0.0
0.0

Hi, here. I can design and verify the passive RC low-pass filter with a cutoff comfortably below 1 kHz, using practical E12 values and through-hole components that are easy to source and assemble. The work will include: • A clear schematic with labelled resistor and capacitor values • Full cutoff-frequency calculation using the selected RC values • Source/load impedance considerations so the real response matches the theoretical design • LTspice/Multisim AC analysis confirming the −3 dB point and expected roll-off • Frequency-response plot plus simulation/source files I have experience with analog circuit design, passive filters, component selection, SPICE simulation, and practical electronics prototyping. I’ll also double-check the chosen values against standard tolerances so the design remains predictable in real hardware, not just in simulation. The final result will be simple, well documented, and ready for through-hole assembly and bench testing. Regards.
$505 USD in 7 days
0.0
0.0

Greetings Dear Hiring Manager Your project stood out because it requires a properly calculated passive RC low pass filter with a controlled sub 1 kHz cutoff and clear consideration of source and load impedance I can handle the component selection and calculations using readily available E12 resistor and capacitor values and deliver the labelled schematic, formula walkthrough and SPICE frequency response confirming the expected -3 dB point and roll off I have worked on similar technical projects and can quickly understand your requirements without unnecessary changes to your existing design I am ready to discuss the details and can start right away Best Regards Dr Kainat
$10 USD in 7 days
0.0
0.0

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