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- Arduino Projects 🛸
- Spectrum Analyzer • Measurement Receiver
- A DC-199 MHz Spectrum Analyser 'VISIONARY' with Si4432
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- Levelmod - A DC to Daylight Microwave Powermeter
- Micro Smart Power Sensor - with AD8319, TMP101
- Polarmod - An I-Q-Processor with the AD9958
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- Wanmod, A Frequency Selective Levelmeter, 29.999 MHz
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- Ningmod - A RF Synthesizer with the AD9953 + co-workers
- Sathanimod - an FM Radiostation with the Si4713
- Supermod - A 23.5 - 6000 MHz Synthesizer with the MAX2871
- Teramod - A 2 to 15 GHz Synthesizer
- Ultramod - A 9.9 - 3200 MHz Synthesizer with the Si564
- Power Supplies • Voltage Standards
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- Shield BHUMI : A Voltage Standard, programmeable
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- DCF-77 Synthesizer. With Arduino. Aka "TimeDuino"
- Shield LEO : SMS on Power down
- Shield NRVD : Dual UHF Power Meter
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- Shield RENÉ : Reference Voltage Source, aka REFDUINO
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- Long Term Datalogging to File (Wanmod)
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- Diode Characteristics (2 x Rigol DM3058E, Supplymod)
- Cookies • Breadcrumbs
- Power Supplies • Calculations
- Artificial Ground
- Power Supply Characterisation
- Power Supply Designer : Rectification
- Power Supply Designer : Linear Regulator
- Power Supply Gallery (Experience Database)
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- Yet another LM317 Calculator
- Feedback Voltage Divider Finder (LM2576 e.a.)
- High Voltage Power Supply (MC34063, step-up)
- Low Voltage Power Supply (MC34063, step-down)
- VB 408 Replacement
- Leomod, Power Supply for ±15 V, 1 A
- Powermod, a Power Supply with the LM317/LM337
- Samroimod - A 32 V / 1 A Power Supply
- Sungmod - A 270 V / 1 mA Power Supply
- Supplymod - A 20 V / 2 A Power Supply
- Thormod, a Power Supply for Photodiodes
- PETH-6 Power Supply • ± 15 V, 100 mA
- PETH-6 Power Supply • +7.5 V, for Arduino / Genuino
- PETH-20 Power Supply • ± 15 V, 600 mA
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- BJT Buffer Amplifier Designer (Collector Feedback Bias)
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- Broadband VHF Power Amplifier, 3 ... 540 MHz, 1.5 W
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- Broadband UHF Amplifier "BONLab-81", 10 dB, +19 dBm
- Broadband Measurement Amplifier, +13 dBm, 4 GHz
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- Broadband LNA with the BGA2817 - DC ... 2 GHz, 5 dBm
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- MAR, ERA, GALI Amplifier Bias Calculator
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- Shortwave Amplifier with 2 x 2N2219A - 0.1 ... 50 MHz, 22 dB
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- Sojamod, a 20 dB RF Amplifier up to more than 1.5 GHz
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- Opamp Circuits • Knowledge
- Cascading OPAMPs For Increased Bandwidth
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- Slew-Rate Considerations
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- Choosing the right OPAMP to drive an ADC (SAR ADC)
- Bipolar Voltage to Unipolar Voltage ADC Driver
- Unipolar Voltage to Bipolar Voltage DAC Circuit
- Differential Amplifier
- Inverting Amplifier
- Inverting Comparator with Hysteresis • Schmitt-Trigger
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- Summing Amplifier
- Remembering Robert A. Pease, aka "RAP"
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- ADF 4350 Module
- A 100 MHz Reference Frequency Source, locked to 10 MHz
- A 100 MHz Reference Frequency Add-On, DIL-28 Formfactor
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- A universal XCO/PLL Board - NB3N501/502/511
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- The Mobile Emitter
- DDS Synthesizer - with AD9851, ≈70 MHz
- Low Noise DDS Daughterboard - with AD9859, ≈ 160 MHz
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- How to measure Mixer Characteristics
- A Mixer Tinkerboard for those ADE-xxx from MCL
- A Mixer Tinkerboard with the venerable NE/SA 612
- Universal Frequency Converter with the Si564
- A broadband Phase-Shifter for IQ Mixing Applications (ECL)
- An RF Phase-Shifter for IQ Mixing Applications (LVC)
- Transmod, shifts 6.8±1 GHz to 1.0±1 GHz.
- UpConverter for SDR, Callisto e.a.
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- Noise • Introduction
- Calibrate your Noise Source. ENR calculator.
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- DIY Noise Source with the BFR92
- DIY Noise Source with 2 x GVA and 2 x PAT - ENR : 12.0 dB
- DIY Noise Source with 2 x GVA-81+ - ENR : 21.43 dB @ 1.0 GHz
- DIY Noise Source with 3 x GVA-81+ - ENR : 24.44 dB @ 1.0 GHz
- DIY Noise Source aka Ghettoblaster 555
- EMI Powerline Schnüffelstück
- How to Measure the Noise Floor of Your Spectrum Analyzer
- Magnetic Field Probe up to 3 GHz
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- Magnetic Field Probe up to 3 GHz
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- 6.5 GHz Prescaler :1 - :17 with the HMC705LP4
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Statistics
Counts only, if "DNT = disabled".
Your IP is 3.137.173.98
ec2-3-137-173-98.us-east-2.c
Info
เราจะทำแบบวิศวกรผู้ยิ่งใหญ่
24. November 2024
YOU RATED THIS ...
avg = 0.0 , n = 0
LISN.php 4379 Bytes 06-07-2024 22:05:05
LISN - Line Impedance Stabilization Network
A helper circuit for EMC/EMI precompliance testing
The assembled prototype
✈ Motivation
Reducing the noise of a power supply was the task the student wanted to achieve.
On the other hand, some Hameg 5012 were looking for a new job. This inspired me to
go for a EMI-Precompliance Test-Setup.
As commercial solutions have astronomical price-tags, we went the diy way. And yes,
approx. 20 dB cheaper :-)
✈ The Design
The design is similiar to others out there. Depending on the norm, you may want to
assemble 10 x 1 µH or 10 x 10 µH or whatever deems suiteable for you.
The first Prototype was assembled with 10 x 680 µH and that resulted in the S21
measurement below :
✈ Downloads
✈ Share your thoughts
The webmaster does not read these comments regularely. Urgent questions should be send via email.
Ads or links to completely uncorrelated things will be removed.
Your Browser says that you allow tracking. Mayst we suggest that you check that DNT thing ?
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t1 = 6709 d
t2 = 319 ms |
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