Categories

Hua Hin Weather Station 🌤
- coming soon ...
Projects (Antiques) 🦖
- Eprom Wave Player
- Frequency Counters • Accessories
- Function Generator (with XR2206)
- VHF Synthesiser with AD9859 :: 'RF-2859'
- Curve Tracer (simple)
- Curve Tracer (advanced)
- DCF-77 Signal Generator (obsolete)
- RFID
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 ➜
- Network Analyzer ➜
  - Shield TOBI : A 60 MHz, 80dB Scalar Network Ananlyzer
  - Arduino 400 MHz Scalar Network Analyzer 'Tobimod'
- Frequency Counter • Frequency Standard ➜
- Low Frequency (AF) Generators ➜
- High Frequency (RF) Synthesizer ➜
- Power Supplies • Voltage Standards ➜
- Measurement Devices • U • I • P • R • T ➜
- RF Switches • Attenuators ➜
  - Attamod, a 2 GHz 60dB Attenuator with the F1958
  - Switchmod, A double SPDT RF Switch with the PE4250
- Component Tester ➜
- Environmental Test System - Madimod ➜
- P-I-D and other Controllers ➜
- Other Shields for Arduino ➜
- 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 I²C 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)
- EMC Precompliance Testing (conducted, Wanmod)
- EMC Precompliance Testing (far field, Wanmod)
- EMC Precompliance Testing (near field, R&S FSP)
- Diode Characteristics (2 x Rigol DM3058E, Supplymod)
- Python 3.x and PicoScope™
  - Gain / Phase - measured with a PicoScope™ 2204A (soon)
- Cookies • Breadcrumbs
  - Frequency Sweep with Ningmod
Power Supplies • Calculations
- Artificial Ground
- Power Supply Characterisation
- Power Supply Designer : Rectification
- Power Supply Designer : Linear Regulator
- Power Supply Gallery (Experience Database)
- Power Supply Ripple and Noise Measurements
- 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
- 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 Poweer 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
Amplifiers • Calculations
- Audio Amplifier ➜
  - Sojamod-AF, a 20 dB AF Amplifier Class-D
- Amplifier Calculations • Design ➜
- Low Noise Amplifier ➜
  - Broadband LNA with the QPL9547 - 100 MHz ... 6 GHz
  - Broadband LNA with the BGA2817 - DC ... 2 GHz, 5 dBm
- Measurement Amplifier ➜
- 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 ➜
- 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
- Cascading OPAMPs For Zero Offset AND High Power
- 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 ➜
- Monopoles, Rod Antennas ➜
- 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 ➜
- Bandpass Filters ➜
- Highpass Filters ➜
- Band Reject Filters • Notch Filters ➜
Filter Designer (Radio, RF)
- Lowpass Filters
- Bandpass Filters
- Highpass Filters
- Band Reject Filters • Notch Filters
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 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.
- UpConverter for SDR, Callisto e.a.
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 ➜
- QO Toolbox - Radio Frequency Things ➜
- QO Toolbox - Audio Frequency Things ➜
Components • Networks 🧲
- Resistors, NTCs
- Capacitors
- Inductors, Transformers
- Directional Couplers
- Microstrip
- Networks (mostly RF)
- SWR • Return Loss Bridges
- 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
- 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

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เราจะทำแบบวิศวกรผู้ยิ่งใหญ่

7. August 2025

MUST-Have

RF-Vademecum
adubli

NXP RF-Manual
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Patent on Rain-Making
adubli

AppCAD

RF Sim 99

YOU RATED THIS ...

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August 2025 เรา ❤ แม่

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✈ Welcome to the ELECTRONICS-LAB.

An archive of useful, funny and educational projects. Forever free.

We tested hard to make this information reliable, but since the Commodore 64 era we know, that "garbage in" results in "garbage out". Feel free to contact the webmaster if you think something may be added or updated or corrected or deleted. What you see here is just what one person hacks together on rainy sundays ...

Use the menu on the left or search for specific keywords ...

The latest Additions / Updates :

The Temperature Sensor (DS18B20 from Maxim) is working nicely. 04.08.25 16:59:09
This is a Sensor for Liquids. (Project Madimod)
The CO2 Sensor (SCD30 from Sensirion) is working nicely :-) Tue, 17.06.25 20:00:09
And therefore is beeing published. (Project Madimod)
And that is a Barometric Pressure Sensor for Madimod. Fri, 06 June 2025 16:43:38
As part of the Weather Forecasting Testbench.
The Madimod Project is coming alive. Fri, 06 June 2025 16:42:38
This one is the Basestation for I2C Sensors.
An LED can replace a Photdiode ... Tue, 11 Mar 2025 16:42:38
If you follow the guidelines here !
The first Raspberry hat is coming alive. Thu, 26 Dec 2024 11:11:38
It is a ±10 V Input / Output Interface. Invented for Lattice 2.0
A high isolation broadband Power Split / Combiner is alive Thu, 12 Dec 2024 12:12:38
Yet another building block tracked down
The Powerline Schnüffelstück works beautiful. Wed, 26 June 2024 19:59:59
Now you can find EMI polluters on the Powerline

Your Browser says that you allow tracking. Mayst we suggest that you check that DNT thing ?

t₁ = 6965 d

t₂ = 200 ms