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Hua Hin Weather Station 🌤
coming soon ...
Projects (Antiques) 🦖
Eprom Wave Player
Frequency Counters • Accessories
CETH-60 Frequency Counter
DIY Mini VHF Frequency Display
Preamplifier
Prescaler : 1000 / 1.5 GHz
Prescaler : 1000 / 12 GHz
Prescaler : 1000 / 17 GHz
Prescaler : 1000 / 24 GHz Counter (Arduino)
Efratom LPR101 Rubidium Frequency Standard
10 MHz OCXO
Daramod - 10 MHz Distribution Amplifier
Function Generator (with XR2206)
VHF Synthesiser with AD9859 :: 'RF-2859'
Curve Tracer (simple)
Curve Tracer (advanced)
DCF-77 Signal Generator (obsolete)
RFID
125 kHz RFID Reader (obsolete)
125 kHz RFID Reader : CoffeeDuino
13.56 MHz RFID Reader/Writer
Micro Projects • Tools 🪓
Atmega8 LED Panelmeter (U,I,°C,°F)
Corona Customer Counter for a shop/place
LCD Adapter • Interface
Microphone Preamplifier
ROTARY ENCODER (STEC11B03)
SDRSharp and a DVB-T stick : a 20 EUR Spectrum Analyser ?
UART - RS232 Bridge (ST232CDR)
UART - USB Bridge (MCP2200)
UART - ETHERNET Bridge (LANTRONIX XPORT)
USB - InfraRed Transceiver
USB - PLL / DDS - Interface
Arduino Projects 🛸
Spectrum Analyzer • Measurement Receiver ➜
A DC-199 MHz Spectrum Analyser 'VISIONARY' with Si4432
A 15-2700 MHz Spectrum Analyser with the RF Explorer 3G+
Levelmod - A DC to Daylight Microwave Powermeter
Micro Smart Power Sensor - with AD8319, TMP101
Polarmod - An I-Q-Processor with the AD9958
VHF Airband Receiver with Si570 and AD8361
Wacharamod - An FM Stereo Receiver with the TEA5767
Wanmod, A Frequency Selective Levelmeter, 29.999 MHz
Network Analyzer ➜
Shield
TOBI
: A 60 MHz, 80dB Scalar Network Ananlyzer
Arduino 400 MHz Scalar Network Analyzer 'Tobimod'
Frequency Counter • Frequency Standard ➜
Countermod - 1 GHz Frequency Counter
Daramod - 10 MHz GPS Receiver with the NEO-7N
Daramod - 10 MHz Distribution Amplifier
Standardmod - A 10.000000 MHz OCXO
Low Frequency (AF) Generators ➜
Kilomod - 15 mHz ... 5 kHz TTL PWM Generator
Mannmod - A PRBS Generator (soon)
Micro USB Waveform Generator - with AD9833
High Frequency (RF) Synthesizer ➜
Kumod - 1 MHz ... 200 MHz Synthesiser with the AD9958
Lekmod - 1 MHz ... 470 MHz Synthesiser with the AD9858
Micromod - A 220 MHz Synthesizer with the Si570
Macromod - A 850 MHz Synthesizer with the LMK61E2
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 ➜
Samroimod - 32 V, 1 A Linear
Sungmod - 270 V, 1 mA Linear
Supplymod - 20 V, 2 A Linear
Supplymod-B. ±10 V, 0.5 A Linear
Thormod, a Power Supply for Photodiodes
Measurement Devices • U • I • P • R • T ➜
Multimod - Our tribute to the Schuh ASM 5007 Multimeter
Nuumod - A Microvoltmeter with the LTC2400
Pingumod - A Power Monitor with the INA260
RF Switches • Attenuators ➜
Attamod, a 2 GHz 60dB Attenuator with the F1958
Switchmod, A double SPDT RF Switch with the PE4250
Component Tester ➜
Diodemod : for DC Characterization of Photodiodes
Ipamod 2022 : A high Precision Digital Capacitance Meter
Tanachaimod - a Bipolar Transistor Curve Tracer
Environmental Test System - Madimod ➜
Madimod : Basestation I2C
Madimod : Basestation BNC
I2C Sensor Barometric Pressure MPL115A2
I2C Sensor CO2 with the SCD30
I2C Sensor Temperature (liquids) DS18B20
BNC Sensor Conductivity of Water
BNC Sensor pH Value
BNC Sensor Dissolved Oxygen
BNC Sensor Total Dissolved Solids
P-I-D and other Controllers ➜
Ongmod : Temperature Controller
Rotormod (TX) : An Arduino based DiSEqC™ Controller
Rotormod (RX) : An Arduino based Servo Controller (FeeTech)
Other Shields for Arduino ➜
Shield
BHUMI
: A Voltage Standard, programmeable
CALC-DUINO, a simple Pocket Calculator Shield (MAX7219)
CLOCK-DUINO, a clock, to be shown to my teachers :-)
DCF-77 Synthesizer. With Arduino. Aka "TimeDuino"
Shield
LEO
: SMS on Power down
Shield
MARCELLA
: Control your Laboratory Devices
Shield
NRVD
: Dual UHF Power Meter
Shield
RENÉ
: Reference Voltage Source, aka
REFDUINO
Shield
TANACHAI
: A Transistor Curve Tracer
Shield
TOBI
: A 60 MHz, 80dB Scalar Network Ananlyzer
Add-on
BRUNO
: Universal Battery Tester (Charge/Discharge)
Arduino Final Projects : IPA's ➜
Ipamod 2022 : A high Precision Digital Capacitance Meter
Ipamod 2023 : An Emergency 10 MHz Reference Source
Arduino Knowledgebase ➜
Arduino Code Snippets
Overview I
2
C Addresses
What's All This '...mod' Stuff, Anyhow ?
Additional Components for all '...mod' things
Bluepill • Blackpill Projects 🛸
- no have yet -
- no have yet -
- no have yet -
Teensy Projects 🛸
ADS-B Signal Generator (Teensy 4.0)
Raspberry Pi Projects 🛸
An ADC+DAC hat. 2 Channel ±10 V Input and Output
Python Lab Experiments 🐍
Basics like e.g. 'Hello Arduino' e.a.
Long Term Datalogging to File (Wanmod)
VCO Testbench (Supplymod, Levelmod, Countermod)
Amplitude Response 10.7 MHz Bandpass (Ningmod, Wanmod)
Frequency Spectrum HF-Bands (Wanmod)
Cookies • Breadcrumbs
Frequency Sweep with Ningmod
Power Supplies ⚡
Calculations • Design • Design Examples
Artificial Ground
Yet another LM317 Calculator
Feedback Voltage Divider Finder (LM2576 e.a.)
Power Supply Designer : Rectification
Power Supply Designer : Linear Regulator
Power Supply Gallery (Experience Database)
Measurements • Characterisation (Noise, Ripple)
Current Source (VCCS) Characterisation
Power Supply Characterisation
Power Supply Ripple and Noise Measurements
Anything Supplymod (mostly using Arduino Nano Every)
Supplymod - A 20 V, 2 A Power Supply
Supplymod-B ... like Bipolar (with the LME49600)
Supplymod-F ... like Fixed (Beginner friendly)
Supplymod-R ... like Recycling (with the LT1074)
Anything PETH (no Microprofessor)
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
PETH-30 Power Supply
PETH-40 B3 Power Supply ±15V, 1200 mA
PETH-40-HAM Power Supply • ± 15 V, 1.5 A
PETH-49 Power Supply • 1 ... 19 V, 2 A
PETH-200V - High Voltage Power Supply
PETH-581 Power Supply • Buck Conv. with Linear Afterburner
PETH-1074 Power Supply • Step-Down with an LT1074
PETH-8093 Power Supply • Step-Down and linear regulation
PETH-9910 Power Supply • 8 ... 16 V, 10 A
Anything High Voltage
High Voltage Power Supply (MC34063, step-up)
Low Voltage Power Supply (MC34063, step-down)
VB 408 Replacement
Sungmod - A 270 V / 1 mA Power Supply
Anything else
Leomod, Power Supply for ±15 V, 1 A with LEMO connector
Powermod, a Dual Power Supply with the LM317 and LM337
Samroimod - A 32 V, 1 A Power Supply
Thormod, a Power Supply for Photodiodes from Thorlabs
AC Power Source. 310 V, 2 A with an Arduino Nano Every, SCPI
Amplifiers • Calculations
Audio Amplifier ➜
Fangmod - ฟังมด : an Audio Tracer for Troubleshooting
Sojamod-AF, a 20 dB AF Amplifier Class-D
Amplifier Calculations • Design ➜
BJT Buffer Amplifier Designer (Collector Feedback Bias)
BJT Buffer Amplifier Designer (Base Bias Network)
BJT Buffer Amplifier Designer (Voltage Feedback Bias)
BJT Buffer Amplifier Designer (Emitter Feedback Bias)
MAR, ERA, GALI Amplifier Bias Calculator
Low Noise Amplifier ➜
Broadband LNA with the QPL9547 - 100 MHz ... 6 GHz
Broadband LNA with the BGA2817 - DC ... 2 GHz, 5 dBm
Measurement Amplifier ➜
Broadband Measurement Amplifier, +13 dBm, 4 GHz
Measurement Amplifier with the LMH6609 • Vu = 1000, 30 MHz
Sojamod, a 20 dB RF Amplifier up to more than 1.5 GHz
The Flatliner #39 - Low Noise, 40 dB up to 2 GHz
Universal Amplifier, using Mini Circuits Components ➜
Broadband UHF Amplifier "BONLab-81", 10 dB, +19 dBm
Broadband Power Amplifier, 1 Watt from 2 - 2500 MHz
SOT-115 J-9 Power Modules ➜
VHF/UHF Power Amplifier with the BGD 804 - 860 MHz, 24 V
VHF/UHF Power Amplifier with the BGY 588N - 550 MHz, 24 V
VHF/UHF Power Amplifier with the QPA 3314 - 1794 MHz, 24 V
VHF/UHF Power Amplifier with the QPA 3316 - 1794 MHz, 24 V
VHF/UHF Power Amplifier with the TAT 8888 - 1000 MHz, 24 V
VHF/UHF Power Amplifier with the RFPD 3580 - 1218 MHz, 24 V
Even Bigger Power Modules ➜
VHF Power Amplifier with the M57762 - 1.2 ... 1.35 GHz, 1 W+
Shortwave Amplifier ➜
Shortwave Amplifier with 2 x 2N2219A - 0.1 ... 50 MHz, 22 dB
Shortwave Power Amplifier with MRF101 - 0.1 ... 50 MHz, 18 dB
Opamp Circuits • Knowledge
Cascading OPAMPs For Increased Bandwidth
The Beauty of Composite Opamp Configurations
Maximize Bandwidth for cascaded Opamps
Slew-Rate Considerations
Maximum Output Voltage vs. Frequency
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
Non-Inverting Amplifier
Non-Inverting Comparator with Hysteresis • Schmitt-Trigger
Summing Amplifier
Remembering Robert A. Pease, aka "RAP"
Antenna Designer 📡
Antenna Selection Guide
Antipodal Vivaldi Antenna Designer
Bi-Quad Antenna Designer
Cantenna Calculator
Discone Antenna Designer
Dipoles ➜
Bazooka Antenna Calculator
Dipole Calculator - folded
Dipole Calculator - straight
Bowtie • Batwing • Butterfly Dipole Calculator
Diamond Dipole Calculator
Elliptical Dipole Calculator
Fan Dipole Calculator
Monopoles, Rod Antennas ➜
Collinear Antenna Array Calculator
J-Pole Antenna
Lambda/4 Groundplane Designer
Short Marconi Antenna Designer
Sleeve Antenna Designer
HB9CV Antenna Calculator
Helix Antenna Calculator
Helix Antenna with Match Calculator
Logarithmic Periodic Dipole Antenna Calculator
Magnetic Loop Antenna Calculator
Microstrip Patch Antenna Calculator
PCB Loop Antenna Calculator
Wokatenna Design
Yagi Uda Antenna Designer (NBS Tech. Note 688)
Yagi Uda Antenna Designer (Rothammel/DL6WU)
Filter Designer (Audio, AF)
Lowpass Filters ➜
Bessel Lowpass Filter 24 dB/octave
Butterworth Lowpass Filter 24 dB/octave
Linkwitz Lowpass Filter 24 dB/octave
Sallen-Key Lowpass
Bandpass Filters ➜
Bandpass Filter Design Guide
Bessel Bandpass Filter 4th order
Butterworth Bandpass Filter 4th order
Chebyshev Bandpass Filter 4th order
Deliyannis Band Pass Filter
Narrow Bandpass Filter
Sallen-Key Bandpass
Simple Bandpass Filter
Highpass Filters ➜
Bessel Highpass Filter 24 dB/octave
Butterworth Highpass Filter 24 dB/octave
Linkwitz Highpass Filter 24 dB/octave
Sallen-Key Highpass
Band Reject Filters • Notch Filters ➜
Bainter Notch Filter Calculator
Fliege Notch Filter
Twin - T - Notch Filter
Filter Designer (Radio, RF)
Lowpass Filters
Butterworth Lowpass Filter
Chebyshev Lowpass Filter
Constant K Lowpass Filter
Stepped Impedance Coaxial Lowpass Filter Designer
Bandpass Filters
Butterworth Bandpass Filter
Ceramic Bandpass Filters
Chebyshev Bandpass Filter
Combline Bandpass Filter Design
Coaxial Tank V.H.F. (Bandpass) Filter Designer
Constant K Bandpass Filter
Coupled Resonator Bandpass Filter Designer
Crystal Filter Design #0 : Buy a lot of crystals :-)
Crystal Filter Design #1 : Measure replacement data
Crystal Filter Design #2 : Calculate the Ladder Filter
Crystal Filter Design #3 : Verifying the results
Helical Bandpass Filter Designer
Interdigital Bandpass Filter
Highpass Filters
Butterworth Highpass Filter
Chebyshev Highpass Filter
Constant K Highpass Filter
Band Reject Filters • Notch Filters
Butterworth Bandstop (Notch) Filter
Chebyshev Bandstop (Notch) Filter
Coaxial Stub Notch Filter Designer
PLL, VCO, DDS, Oscillators
ADF 4350 Module
A 100 MHz Reference Frequency Source, locked to 10 MHz
A 100 MHz Reference Frequency Add-On, DIL-28 Formfactor
A 100 MHz Reference Frequency with 10 MHz OCXO
A universal VCO Board - MC100EL1648DG and PGA-103+
A universal XCO/PLL Board - NB3N501/502/511
Injection Lock Oscillator with PLL (and a NB3N502)
MEMS Oscillators - SiT8008/SiT8208/SiT8209
The Mobile Emitter
DDS Synthesizer - with AD9851, ≈70 MHz
Low Noise DDS Daughterboard - with AD9859, ≈ 160 MHz
RF Reference Source - for Powermeter Calibration
4046 VCO Calculator
Mini Synthesizer with 74HCT9046A
PLL Loopfilter Designer, 2nd and 3rd order
PLL Divider Calculator
NE 555 Oscillator - Single Frequency
NE 555 Oscillator - Frequency Range
NE 555 Monoflop
RC HCT Inverter Oscillator
Wien Bridge Oscillator
XCO3 - A low cost Crystal Oscillator Module
Circuit Collection : Oscillators
Mixer • Freq. Converters
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.
Transmod 2.0, shifts anything 10 MHz 550 MHz to DC - 10 MHz.
UpConverter for SDR, Callisto e.a.
DownConverter for SDR, Callisto e.a. 1-2 GHz to 0-1 GHz
Noisy Things
Noise • Introduction
Calibrate your Noise Source. ENR calculator.
Cascaded Noise Figure Calculations
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
Noise Figure Measurement using the Gain-Method
Noise Figure Measurement using the Y-Method
Quantumoptics Stuff 3599
QO Basics - Photodiode Things ➜
Photodiodes for Physicists
Photodiodes for Engineers, Technicians, ...
Photodiodes Troubleshooting : The Mobile Emitter
Photodiode Opamp Amplifier • Transimpedance Amplifier
LED's ... working like Photodiodes
LED powered Photon Amplifier
Diodemod : for DC Characterization of Photodiodes
Photomod : a Gain / Phase Analyzer for Photodiode Amplifiers
QO Toolbox - Radio Frequency Things ➜
Bias - Tee
Bias - Tee, Broadband and Commercial
Coupled Resonator L-C Bandpass
DC-Block
Diode RF Detector
Equalizer • Slope - Compensator
Logarithmic Amplifier with the AD8307
Highpass, 9-pole, L-C
Lowpass, 9-pole, L-C
Lowpass, Highpass using Würth Power Inductors
Magnetic Field Probe up to 3 GHz
Prescaler :2 :4 :8 :10 :20 :40 :80 MC12093 MC12095 MC12080
6.5 GHz Prescaler :1 - :17 with the HMC705LP4
8 GHz Prescaler :80 - :640 with the HMC434 + MC12080
Resistive Power Split, DC - 3000 MHz, 9.5 dB, 3 Way
Wheatstone Bridge Power Split, 1 - 1000 MHz, 6 dB, 2 Way
RF Limiter
RF Switch - with the JSW2-63DR
RF Switch - with the PE4250
QO Toolbox - Audio Frequency Things ➜
Booster (Amplifier) for Red Pitaya e.a.
Ground-Breaker
Quantum Computer Arithmetic Unit : Adder
Quantum Computer Arithmetic Unit : Amplifier
Quantum Computer Arithmetic Unit : Divider
Quantum Computer Arithmetic Unit : Inverter
Quantum Computer Arithmetic Unit : Multiplexer (Switch) 2:1
Quantum Computer Arithmetic Unit : Multiplier
Quantum Computer Arithmetic Unit : Subtractor
QO Setup - EMC Things ➜
Isolation Transformer, 0-310V, 2A, Δ=10V, SCPI, U, I, COS Φ
LISN - Line Impedance Stabilization Network for DC
LISN - Line Impedance Stabilization Network for AC, 230 V
Transient Limiter (Spectrum Analyser Protection)
Setup Conducted Emissions - Powerline
Components • Networks 🧲
Resistors, NTCs
Resistor Colour Code (Decoder:-) :: 4 RINGS
Resistor Colour Code (Decoder:-) :: 5 RINGS
Resistor Colour Code (Decoder:-) :: 6 RINGS
NTC Fundamentals
Find parallel Resistor combination
Find serial Resistor combination
Voltage Divider Calculator 1 (Fixed)
Voltage Divider Calculator 2 (Adjusteable)
Capacitors
Disc Air Capacitor Calculator
Impedance Calculator : XL, XC
Film Capacitors : What's all this MKS stuff anyhow ?
Inductors, Transformers
90 Degree Power Split / Combiner
Broadband Impedance Matching with Transformer
Ferrite Toroidal Coil (Amidon)
Helical Coil Calculator
Impedance Calculator : XL, XC
Iron Powder Toroidal Coil (Amidon)
Magic Tee Power Split / Combiner
Power Transformer Design :: EI • M Core
Wire inductance Calculator
Directional Couplers
Bi Directional Coupler or Dual Directional Coupler ???
A Bi Directional Coupler, 1 - 800 MHz, 20 dB
A Dual Directional Coupler, 5 - 1500 MHz, 10 / 20 dB
A Dual Directional Coupler, 5 - 2850 MHz, 17 ±1 dB
Understanding Directivity
How to Measure Directivity of Directional Couplers
Gain - Phase - Adapter using the AD 8302
Microstrip
Coplanar Waveguide Impedance Calculator
Microstrip Impedance Calculator
Microstrip 90° Corner Calculator
Networks (mostly RF)
Coaxial Power Split
Diplexer Bandpass
Diplexer Lowpass
Lumped Element Balun Calculator
Matching Network
Matched Attenuator Calculator
PWM to DC Lowpass Calculator
Resistive Matching Network, the L-Pad
Resistive Equal Power Divider
Resistive Unequal Power Divider
Wilkinson Power Split
SWR • Return Loss Bridges
A Return Loss Bridge : 3 * 50Ω, ADTT1-6+
A Return Loss Bridge : 3 * 50Ω, ETC1-1-13TR
A Return Loss Bridge : 3 * 50Ω, AD8307
A Return Loss Bridge : 3 * 50Ω, AD8302
Coaxial cable Calculator
Dielectric Coaxial Resonator
Choose the right Fuse (without confuse :-)
Heatsink Calculator
Conversions 📏
Adding Up Multiple Carriers
AWG • Metric Conversion
Noise Figure • Temp.
Reflection Coefficient to Impedance Converter
VSWR to Return Loss (dB) Converter
Return Loss (dB) to VSWR Converter
Power Conversion : dBm - volts - watts
Phase Noise to Phase Jitter Converter
Phase Jitter to Phase Noise Converter
ppm to Hz Converter
misc. Calculations 🖩
Pathloss / RSSI
Missmatch Loss
IP3 / SFDR Calculator
IP3, IP2, 1dB Comp. SFDR Visualizer
SOA Diagram Drawer (Safe Operating Area Visualiser)
Hardware • Software 🖫
DIY Soldering Tip Stand for SMD Tips
Must-Have favourites (Windows)
CodeVisionAVR Tools • Snippets
LCD Custom Character Code Generator
Datasheets • Manuals
Datasheet Collection of our Projects
FLUKE Service Manuals
HP Service Manuals
Papers of Changpuak
Engineering Formula Collections / Goodies
Tutorials • DHE
Make your own frontpanel with Gedakop ®
Klirrfaktor
Mean Time To Failure • Reliability Considerations
PLL Seminar
PLL Seminar #1 - Theory
PLL Seminar #2 - Loop Filter Calculations
PLL Seminar #3 - Simulations with LTSpice
Engineering Formula Collections / Goodies
Dr. Hat Electronics
Troubleshooting • Repair 🔧
A DS1307 (I2C RTC) displays 165.165.XXX
Autopsy of a Thorlabs PDA8GS
UT803 : Let's get serial
UT803 : Let's talk to an Arduino/Genuino
Trouble with that Foldback Current limiting
Statistics
Since 08.08.2014
Counts only, if "DNT = disabled".
216.73.217.78
216.73.217.78
Warning !
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MORE INFORMATION
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5. November 2026
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OVERVIEW RATINGS ... since 25-11-2025
Timestamp : 05.11.2026, 10:05:42 (UTC+01:00)
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WEBSITE
#AVG
#N
1
4046_VCO_Calculator
6.545
11
2
AD9833-MicroWaveformGenerator
4.500
6
3
AD9851
1.000
1
4
ADS-B-Synthesizer
2.857
7
5
Active_Notch_Filter
7.158
19
6
Amplifier_BONLab_81
1.000
1
7
Amplifier_Roi-Et
5.000
2
8
Antenna_Selection_Guide
6.000
6
9
Antipodal_Vivaldi_Antenna_Designer
5.750
16
10
Arduino-24_GHz_Counter
9.000
1
11
Arduino-Attamod
9.000
1
12
Arduino-Boots-5009
0.667
3
13
Arduino-CALCDUINO
1.000
1
14
Arduino-Code-Snippets
2.000
2
15
Arduino-Countermod
1.167
6
16
Arduino-DCF77
3.667
3
17
Arduino-Ipamod_2022
1.000
2
18
Arduino-LeadAcidBatteryTester
7.333
3
19
Arduino-Madimod-DS18B20
0.800
5
20
Arduino-Madimod-SCD30
1.000
1
21
Arduino-Ningmod
9.000
1
22
Arduino-Nuumod
6.500
2
23
Arduino-Polarmod
1.000
5
24
Arduino-Powermod
4.500
2
25
Arduino-Project-MrBean
1.000
2
26
Arduino-Project-Ongmod
0.667
3
27
Arduino-Project-SPECTRE
6.000
1
28
Arduino-Project-VISIONARY
6.000
3
29
Arduino-Rotormod-TX
4.000
2
30
Arduino-Shield-BHUMI
9.000
1
31
Arduino-Shield-CHULA
1.000
1
32
Arduino-Shield-KILOMOD
1.000
1
33
Arduino-Shield-NRVD
5.000
2
34
Arduino-Shield-REINHARD
0.000
1
35
Arduino-Shield-RENE
1.000
1
36
Arduino-Shield-SUPERMOD
4.667
3
37
Arduino-Shield-TANACHAI
3.000
2
38
Arduino-Shield-ULTRAMOD
1.000
1
39
Arduino-Shield-WACHARA1
9.000
1
40
Arduino-SmartPowerSensor
9.000
1
41
Arduino-SupplyMod-B
7.000
1
42
Arduino-SupplyMod-D
5.000
1
43
Arduino-Switchmod-RF
4.500
2
44
Arduino-Tobimod
8.500
2
45
Arduino-Wanmod
3.000
1
46
AttenuatorCalculator
6.333
3
47
BGA2817
9.000
1
48
BJT_Buffer_Amplifier
2.500
2
49
BJT_Buffer_Amplifier_2
9.000
1
50
BJT_Buffer_Amplifier_3
1.000
1
51
BJT_Buffer_Amplifier_4
1.000
2
52
Bainter_Notch_Filter
5.714
7
53
Bessel_Bandpass_active
5.000
2
54
Bessel_Highpass_active_24dB
4.500
2
55
Bessel_Lowpass_active_24dB
2.000
1
56
Bias-Tee
9.000
1
57
Blindwiderstand
1.000
1
58
Broadband_LNA_QPL9547
2.600
5
59
Butterfly-Antenna-Designer
5.722
18
60
Butterworth_Bandpass_active
5.333
9
61
Butterworth_Highpass_active_24dB
7.250
4
62
Butterworth_Lowpass_active_24dB
7.000
2
63
CETH-60-Counter
5.000
2
64
Cascaded-Opamp-Gain-Bandwidth-Calculator
1.000
1
65
Cascading_OPAMPs
1.000
1
66
Chebyshev_Bandpass_active
9.000
2
67
Choosing_OPAMP_01
1.000
1
68
Choosing_OPAMP_02
1.000
1
69
Choosing_OPAMP_to_drive_ADC
5.500
4
70
Choosing_the_correct_Fuse
1.000
1
71
Coaxial_Stub_Filter_Designer
7.667
6
72
Coaxial_Tank_VHF_Filter_Designer
6.786
14
73
Collinear-Antenna-Array
7.038
26
74
Const_k_Bandpass
6.333
3
75
Const_k_Highpass
1.000
1
76
Const_k_Lowpass
8.000
5
77
Coplanar_Waveguide_Calculator
7.400
5
78
Curve_Tracer
6.333
6
79
Curve_Tracer_advanced
9.000
2
80
DCF77
6.000
1
81
DHE
1.000
1
82
DIY-Bi-Directional-Coupler
1.000
1
83
DIY-DualDirectionalCoupler
6.000
3
84
DIY-FrontPanelProduction
4.750
4
85
DIY-NoiseSourceBFR92
9.000
2
86
Daramod-100MHz-Reference
1.000
2
87
Deliyannis_Bandpass
5.750
4
88
DifferentialAmplifier
2.667
3
89
Diode_Detectors
8.143
7
90
Diplexer
3.667
3
91
Dipole_folded
6.746
67
92
Dipole_straight
6.494
83
93
Direct-Coupled-Resonator-Bandpass
6.889
9
94
Disc_Air_Capacitor_Calculator
4.000
5
95
DisconeAntennaCalculator
6.884
43
96
ENR-Noise-Source-Calibration
4.250
8
97
Equalizer
6.000
2
98
FA_17GHz_PRESCALER
1.000
1
99
Fangmod-AF-Tracer
5.000
6
100
FeedbackCalculator
6.750
4
101
HB9CV
7.000
21
102
Helical_Bandpass_Filter_Designer
6.846
13
103
High_Voltage_Power_Supply_MC34063
2.833
6
104
How_to_Measure_Directivity_of_Directional_Couplers
2.667
3
105
How_to_Measure_the_Noise_Floor_of_Your_Spectru ...
8.000
1
106
I-Q-LO-Generator
1.000
1
107
InjectionLockOscillatorPLL
9.000
1
108
InvertingAmplifier
9.000
1
109
InvertingComparator
8.667
3
110
J-Pole_Antenna-Designer
6.923
26
111
LCD-Adaptor
5.500
2
112
LED-DigitalVoltmeterModule
8.000
1
113
LED-acts-like-Photodiode
3.000
1
114
LM317
6.000
2
115
Lcd_custom_character_designer
6.000
1
116
Linkwitz_Lowpass_active_24dB
9.000
2
117
Logarithmic_Amplifier_AD8307
9.000
3
118
Loop-Antenna-Calculator
6.333
30
119
LumpedBalunCalculator
9.000
2
120
MEMS_Oscillators
9.000
1
121
MagneticFieldProbe
7.286
7
122
MicrophonePreamplifier
8.000
1
123
Microstrip_Calculator
9.000
1
124
Microstrip_Patch_Antenna_Calculator
8.667
3
125
Microstrip_RF_Corner
6.667
3
126
Mini-VHF-Frequency-Display
9.000
5
127
MinimumLossResistorMatch
2.750
4
128
Mismatch_Loss_Calculator
9.000
1
129
Mixer-ADE-XY
9.000
1
130
MultiCarrierAddUp
9.000
1
131
NE555-astable-Range
5.000
2
132
NE555-astable-Single
8.000
1
133
NE555_Monoflop
9.000
1
134
NTC-1
0.500
2
135
Narrow_Bandpass_2
7.625
8
136
Noise-Source-with-3xGALI
9.000
1
137
NoiseFigureMeasurement-Gain-Method
3.750
4
138
NoiseFigureMeasurement-Y-Method
2.200
5
139
NonInvertingComparator
8.400
5
140
Notch_Filter
2.000
1
141
OCXO
6.333
3
142
Oscillators
3.000
1
143
PCB-Loop-Antenna-Calculator
2.000
3
144
PETH-200V
9.000
1
145
PETH-581
9.000
1
146
PHA-202+Amplifier
9.000
3
147
PLL_Seminar_2
9.000
1
148
PWM-to-DC-Lowpass-Calculator
3.167
6
149
PhotodiodeOpampAmplifier
4.500
2
150
Photodiodes_for_Technicians
9.000
1
151
Power_Transformer_Design
4.000
1
152
Prescaler_HMC705LP4E
9.000
1
153
PyLab-Basics
8.000
1
154
PyLab-LongTerm-0301
9.000
1
155
PyLab-VCO
6.000
1
156
Quartz_Crystal_Filter_Designer_0
6.500
2
157
Quartz_Crystal_Filter_Designer_1
9.000
1
158
Quartz_Crystal_Filter_Designer_2
8.333
6
159
Quartz_Crystal_Filter_Designer_3
9.000
2
160
RC_HCT_Generator
8.000
1
161
RF-PowerTransferStandard
9.000
3
162
RF-Switch-JSW2-63DR
4.000
1
163
RF-T-DC-Block
8.000
1
164
RF-T-Limiter
8.667
3
165
RF-T-PitayaBooster
9.000
1
166
RF-T-PrescalerHMC434
4.375
8
167
RF-T-PrescalerMC12093
9.000
1
168
RFID-READER-125kHz
2.667
3
169
Raspberry-ADC-DAC
9.000
3
170
Reference_100MHz-DIL28
4.000
2
171
Reflection_Coefficient_Impedance_Converter
9.000
2
172
ResistivePowerSignalTap
5.800
10
173
Rubidium_Standard
9.000
1
174
SDR
0.000
1
175
SOA-Diagram-Drawer
1.000
2
176
SWR_Bridge_AD8307
5.000
2
177
Sallen_Key_Bandpass_light
8.500
6
178
ShortwaveAmplifier2N2219Ax2
8.000
1
179
Si570
9.000
1
180
Simple_Bandpass
6.333
3
181
Sleeve-Antenna
5.154
13
182
Software
7.750
8
183
Sojamod-Sonar-AF
5.000
2
184
Stepped_Impedance_Lowpass_Coax
9.000
3
185
SupplyMod-R
3.000
3
186
Tool_SolderTipStand
5.333
3
187
USB-PLL-Adapter
1.000
1
188
UnipolarVoltageOutputDAC-to-BipolarVoltage
1.000
4
189
UpConverter_for_SDR_Callisto_ea
0.000
1
190
VB408
9.000
3
191
VCO-1648
5.500
2
192
VHF_Power_Amplifier_M57762
6.333
3
193
VHF_Synthesiser_withAD9859
6.500
2
194
Voltage-Controlled-Current-Source-Characterisation
3.667
3
195
Wien-Bridge-Oscillator
7.250
4
196
XCO3
9.000
1
197
airband_receiver
6.000
7
198
amidon_toroid_calculator
7.231
13
199
amidon_toroid_calculator_2
5.000
2
200
bandpass_filter_designer
6.250
4
201
bi_quad_antenna_designer
6.241
54
202
butterworth_bandpass
5.833
6
203
butterworth_bandstop
1.667
3
204
butterworth_highpass
9.000
2
205
butterworth_lowpass
7.571
7
206
calc_01
1.000
1
207
calc_02
9.000
1
208
calc_04
5.000
1
209
calc_06
6.000
2
210
calc_06_Find_Serial_Resistors
8.000
1
211
calc_07
7.000
2
212
calc_08
6.941
17
213
calc_09
6.667
6
214
calc_12a
7.194
36
215
calc_12b
3.800
5
216
calc_13_PowerConversion
6.500
2
217
calc_15
6.000
1
218
calc_16a
7.167
12
219
calc_18
8.333
3
220
calc_19
4.000
1
221
calc_20
9.000
1
222
calc_21
4.200
5
223
calc_22
7.000
1
224
calc_23
9.000
1
225
cantenna
6.600
45
226
chebyshev_bandpass
6.364
11
227
chebyshev_bandstop
7.667
3
228
chebyshev_highpass
8.500
2
229
chebyshev_lowpass
7.917
12
230
coaxial_power_split
5.000
1
231
combline_bandpass_filter_designer
7.200
5
232
dB_to_VSWR
2.000
1
233
datasheets
1.000
1
234
engineering_formula_collection
9.000
2
235
index
5.657
35
236
interdigital_bandpass_filter_designer
7.761
46
237
javascript
1.000
1
238
lambda_4_gp
7.125
8
239
lpda
7.217
23
240
mar_era_bias
8.500
4
241
pathloss_rssi
5.667
3
242
peth_9910
0.000
1
243
phase_noise_jitter_conversion
1.000
1
244
phase_noise_jitter_conversion_reverse
3.500
2
245
pll_divider_calc
9.000
1
246
pll_loopfilter_calc
7.214
14
247
power_supply_design
7.111
9
248
ppm_to_Hz_converter
1.000
2
249
preamplifier
6.000
1
250
prescaler
9.000
1
251
prescaler_12GHz
8.750
4
252
proj_01
1.000
1
253
proj_02
2.000
1
254
proj_03a
9.000
1
255
proj_06
1.500
2
256
resistive_power_split
7.333
6
257
resistor_colour_code_4
8.000
1
258
trouble_with_Foldback
0.000
1
259
tut_04
7.667
3
260
wilkinson_power_split_2
7.500
10
261
yagi_uda_antenna
6.263
57
262
yagi_uda_antenna_DL6WU
6.612
147
263
SUM OF VOTES
1536
t
1
= 7420 d
t
2
= 288 ms
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