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In this episode we cover operational amplifier basics, and build four common op amp circuits including a voltage follower, comparator, non-inverting...
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In the early days of electronics, accurate and high performance test equipment was physically large and unruly. In 1942 the folks at Hewlett Packard...
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In this theory-based episode, we look at what it takes to make a Colpitts oscillator produce a sine wave. We cover Barkhausen’s criteria in...
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In the previous episode we looked at how to drive a relay from a lower power semiconductor device, using an NPN transistor as a buffer. In this...
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In this theory-based episode, we take a quick look at the evolution of the relay, how it changed telegraphy, and how to actuate a relay safely...
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In this episode we make a PWM LED driver using transistors and an Arduino Nano, which provide dimming and sequencing functionality for a Flux...
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In this theory-based episode, we’re going to take a look at what makes LEDs tick and how to drive them properly making sure they operate long...
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In this episode, we put a Zener diode to work in a voltage regulating application. I’ve been wanting to put together a 13.8VDC, 30 amp linear...
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In this episode, we explore the Zener diode and the differences between Zener and avalanche action. Both types of Zener diodes are analyzed on...
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I have several outdoor antennas that connect to radios inside the house, and I wanted a kind of early warning system when storms are approaching...
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In this episode, we explore the basics of series and parallel resonant circuits, also known as tank circuits. We look at how frequency affects...
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In this episode, we take a look at the shortcomings of measuring low resistances with a standard digital multimeter. We demonstrate measuring...
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In this video, we familiarize ourselves with the concepts of current, voltage, and resistance and how they relate to Ohm’s law. A water circuit...
