Posts Tagged ‘Power Supply’

A 24 Volt Sealed Lead Acid Battery Charger (Part 3)

In Part 1 of this project, we covered the general design of the battery charger.  Part 2 described the physical construction of the charger.  In Part 3, we will cover the calibration and operation of the charger, and present the Arduino Nano source code for the project. Once the board was populated, I isolated the […]

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A 24 Volt Sealed Lead Acid Battery Charger (Part 2)

In Part 1, we went over the design of the 24 volt charger. In this Part 2, we will describe the physical build. At this point, I developed a PC board to hold all of the components in a solid manner.

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A 24-Volt Sealed Lead Acid Battery Charger

Recently, the battery charger inside my battery powered lawn mower died (again).  This time, I found that the printed circuit board was so rotted by moisture, that it was unrepairable.  Knowing that the rest of the mower is still in great shape, and given that this OEM charging circuit had failed several times in the […]

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T-Bias interface

I had a comment a few weeks ago asking for more details about the T-Bias device used to send DC over the active RF coax to my 43′ vertical antenna. This is used to switch the matching network such that: 0 volts = 60 – 6 meter operation +12 volts = 80 meter operation -12 […]

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Portable Power

I like operating from the Ranch, because I have some decent antennas there, and the background noise is nearly nonexistent.  But in the past, that has involved packing all my radio stuff up, including the old Astron 20-Amp linear power supply (= heavy). I decided to make things a little more convenient.  I got a […]

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