Category Archives: power supply

A DIY Electronics Lab You Can Show off With Pride

It’s hardly a secret that getting into a serious electronics habit can be detrimental to your bank account. A professional grade lab is simply unobtainable for many a tinkerer, and even mid-range hardware can set you back considerably. Which is why many folks just starting out will attempt to salvage …read more

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Posted in atx power supply, Digital storage oscilloscope, electronics lab, power supply, tool hacks, workbench | Leave a comment

In-Depth Design Of A Flyback Converter

It is tempting to think of analogue and digital domains as entirely distinct, never to touch each other except like a cold war Checkpoint Charlie, through the medium of an ADC or DAC. In reality there are plenty of analogue effects upon digital circuitry which designers must be aware of, …read more

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Posted in flyback, parts, power supply, switch mode | Leave a comment

Another PC Power Supply Project

Economy of scale is a wonderful thing, take the switch-mode power supply as an example. Before the rise of the PC, a decent multi-voltage, high current power supply would be pretty expensive. But PCs have meant cheap supplies and sometimes even free as you gut old PCs found in the …read more

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Posted in ACS712, Arduino Hacks, atx, pc power supply, power supply, tft, tool hacks | Leave a comment

Build Your Own Active Load

When it comes to testing power supplies, it’s useful to have a dummy load to put the gear through its paces. While it’s possible to just use some old heating elements or other big resistors, an active load can provide more control over the process. [Charles Ouweland] found himself in …read more

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Posted in Active Load, power supply, PSU testing, tool hacks | Leave a comment

Solving The Mysteries Of Grounding While Improving A Power Supply

Grounding problems and unwanted noise in electrical systems can often lead to insanity. It can seem like there’s no method to the madness when an electrical “gremlin” caused by one of these things pops its head out. When looking more closely, however, these issues have a way of becoming more …read more

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Posted in capacitance, electricity, filter, gremlin, Ground Loop, grounding, inductance, noise, oscilloscope, power supply, teardown | Leave a comment

Peek Inside These Same-But-Different Power Supplies

When [Kerry Wong] found an Amrel PPS 35-2 Programmable Power Supply from the late 90s on eBay, he recognized it as the single-channel version of another unit he owned, the dual-channel Amrel PPS-2322. Naturally, he purchased it and did a compare and contrast of the two models.

From the outside, …read more

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Posted in 35-2, Amrel, power supply, PPS, PPS-2322, retrocomputing, teardown, vintage | Leave a comment

USB Power Delivery For All The Things

The promise of USB Power Delivery (USB-PD) is that we’ll eventually be able to power all our gadgets, at least the ones that draw less than 100 watts anyway, with just one adapter. Considering most of us are the proud owners of a box filled with assorted AC/DC adapters in …read more

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Posted in i2c, parts, peripherals hacks, power supply, STUSB4500, USB C, USB-PD | Leave a comment

Atomic Pi Gets A 3D-Printed Mac Makeover

The Atomic Pi is a pretty impressive piece of kit for the price, but it’s not exactly a turn-key kind of product. Even to a greater extent than what you might normally expect with a “dev” board like this, the user is responsible for putting together the rest of the …read more

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Posted in 3D printed enclosure, Atomic Pi, Cheese Grater, computer hacks, mac pro, parts, power supply | Leave a comment

Adding Bluetooth Control To A Benchtop Power Supply

In 2019, it’s possible to kit out a lab with all the essentials at an even cheaper price than it has ever been. The DPS3005 is one such example of low-cost equipment – a variable power supply available for less than $50 with a good set of features. [Markel Robregado] …read more

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Posted in bluetooth, launchpad, power supply, ti launchpad, tool hacks | Leave a comment

A Breadboard Power Supply That’s More Universal Than Most

A favorite project of ours is the humble breadboard power supply. Yes, you can still prototype on breadboards, no, you don’t need an entire bench power supply to prototype on one, and every breadboard made in the last forty years has had the same pattern of holes. There’s plenty of …read more

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Posted in breadboard, MIC5225, power supply, tool hacks | Leave a comment