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Welcome to electroimc.com, the blog dedicated to electronics information for hobbists and professionals. In this website you will find electronic theory articles and various electronic circuits projects, completely explained in details. Here you can find the latest updates:

• Sun 25 Jul 2021 - New article:

  Fake ESP8266 Modules
  Unluckily not even the cheap ESP8266 are safe from fake versions on the market. A tutorial about how to recognize the original ones.
  

• Sun 11 Apr 2021 - New article:

  Comparison for Espressif MCUs
  The Espressif embedded devices ecosystem is constantly growing. This summary table can help to choose the best MCU of this family.
  

• Sun 29 May 2016 - New article:

  Single power supply modular audio mixer
  Schematic and printed circuit board for a single power supply audio mixer, made of a master module and many line in or mic modules.
  

• Sun 29 May 2016 - New article:

  Mixer: main board
  The schematic and the printed circuit board for the main board of the single power supply modular audio mixer
  

• Sun 29 May 2016 - New article:

  Mixer: line input board
  Schematic and printed circuit board for the line input board, part of the single supply modular audio mixer
  

• Sun 29 May 2016 - New article:

  Mixer: mic input board
  Schematic and printed circuit board for the microphone preamplifier board, part of the single power supply modular audio mixer.
  

• Wed 18 May 2016 - Update:

  Measure of the maximum power of a supply transformer
  Extimation of a supply transformer maximum power based on the direct measure of the current and the voltage on the connected load.
  

• Fri 24 Jul 2015 - Update:

  Galvanoplasty
  A quick introduction to galvanoplasty (also called electrotyping), a process similar to galvanostegy for non-metallic materials.
  

• Fri 24 Jul 2015 - Update:

  Electroplating
  A detailed description of electroplating, an industrial process which allows to cover metal objects with thin films of different materials.
  

• Thu 25 Jun 2015 - Update:

  Subwoofer active low pass filter
  A simple circuit based on the LM358 opamp to be placed before an audio amplifier driving a subwoofer loudspeaker.
  

• Tue 23 Jun 2015 - Update:

  Cheap measurement of an audio amplifier input impedance
  The calculation requires only a multimeter to measure the effective alternating voltage and a sine source, such as a computer or a mobile phone
  

• Tue 12 May 2015 - Update:

  Subwoofer third order passive low pass filter
  Project and schematic of a passive circuit made of capacitors and resistors to be placed before an audio amplifier to filter the high frequencies
  

• Sat 09 May 2015 - Update:

  Subwoofer passive low pass filter
  A simple capacitors and resistors network to be placed before a generic audio amplifier in order to filter the high frequencies