Transistor Amplifier Calculator

 
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An Excel-based transistor amplifier calculator.

 

 

 

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My Lab Tour

 
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Welcome to the paulorenato.com electronic's lab. In this article we have a look at my workspace and the many gadgets I've collected over the years.

 

 

 

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Praise for the Lo-Z Probe

 
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Lessons learned on the topic of high-speed signal probing, and how to build a high-bandwidth "Lo-Z" probe for very little money.

 

 

 

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Karaoke Mixer

 
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A sound mixer for a YouTube-based Karaoke system.

 

 

 

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A Dollar Store Voltmeter

 
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How to make a cheap panel voltmeter from a dollar-store pedometer.

 

 

 

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Fume Extractor for Your Electronics Workbench

 
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How to build a fume extractor for your electronics workbench using an old PC power supply.

 

 

 

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Building an Adjustable Constant Current Load

 
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Building a constant current "dummy" load. A useful piece of test gear for any electronics lab.

 

 

 

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LED Fader for Home Lighting Applications

 
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An LED lighting project with slow fade-in effect and two switchable lighting levels.

 

 

 

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Battery Operated Light Box

 
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Build a battery operated light box for photographing small objects.

 

 

 

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Converting a Flashlight to LED

 
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Converting a flashlight to LED.

 

 

 

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Flood Alarm

 
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Flooding inside your home can have devastating effects. Protect yourself by building a simple flood alarm.

 

 

 

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