Electronics

Breadboard Power Supply – My First Circuits

This article is included in the ISTEM 2023 Series Let’s use our Breadboard PS to light an LED (light emitting diode). First, we can determine the LED voltage needed to light a general-purpose Green LED by looking at a data sheet.  LED Forward Current vs. Forward Voltage Observing the characteristic curve of forward voltage vs forward …

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Introduction to Programming The Arduino Nano: My first program

This article is included in the ISTEM 2023 Series Start by opening the Arduino IDE application. Select the Windows Start Icon at the bottom left of the screen and select the Arduino IDE application. Arduino IDE at startup. Select the “Select Board” drop-down and note the Unknown Com ports. With the Breadboard Power Supply off and …

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Downloading Instructions for the Arduino IDE

This article is included in the ISTEM 2023 Series Steps for downloading the Arduino IDE: Go to https://www.arduino.cc/en/software On the right side of the site page – Select the DOWNLOAD OPTION that is correct for your computer. I selected Windows Win 10 and newer, 64 bits. Choose JUST DOWNLOAD or CONTRIBUTE & DOWNLOAD. Once the download …

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The Problem With Unregulated Power Supplies

Previous Article in this series The prerequisite for this article can be read here:  Unregulated Bridge Rectification Pi Filtered Power Supply Given Given: Vpri = 120v 60Hz, Turns ratio = 4:1, C1 = 10uF, RL = 10K Ohms Review the calculations for this circuit previously covered Unregulated Halfwave Filtered Power Supply The problem The problem with …

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Unregulated Fullwave Center Tapped Filtered Power Supply

Previous Article in this series The prerequisite for this article can be read here: Unregulated Halfwave Filtered Power Supply Given Given: Vpri = 120v & 60Hz, Turns ratio = 4:1, C1 = 10uF, RL = 10K Ohms  Calculate Primary Voltage Start by converting the primary RMS voltage to Peak voltage.$$Vpeak_{Primary}=frac{V_{RMS}}{0.707}$$$$Vpeak_{Primary}=frac{120V_{RMS}}{0.707}$$$$Vpeak_{Primary}=169.731vp$$  Primary Peak to Peak Voltage …

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Unregulated Bridge Rectification, Pi Filtered

Previous Article in this series The prerequisite for this article can be read here: Unregulated Fullwave Bridge Rectifier with Filtering Given Given: Vpri = 120v & 60Hz, Turns ratio = 4:1, C1 = 10uF, C2=20uF, RS=500ohms, & RL = 10K Ohms Calculate Primary Voltage Start by converting the primary RMS voltage to Peak voltage.$$Vpeak_{Primary}=frac{V_{RMS}}{0.707}$$$$Vpeak_{Primary}=frac{120V_{RMS}}{0.707}$$$$Vpeak_{Primary}=169.731vp$$  Primary …

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Unregulated Fullwave Bridge Rectifier with Filtering

Previous Article in this series The prerequisite for this article can be read here: Unregulated Fullwave Center-Tapped Filtered Power Supply Given Given: Vpri = 120v & 60Hz, Turns ratio = 4:1, C1 = 10uF, RL = 10K Ohms Calculate Primary Voltage Start by converting the primary RMS voltage to Peak voltage.$$Vpeak_{Primary}=frac{V_{RMS}}{0.707}$$$$Vpeak_{Primary}=frac{120V_{RMS}}{0.707}$$$$Vpeak_{Primary}=169.731vp$$  Primary Peak to Peak …

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