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Posts Tagged ‘DC/DC converter’

DC/DC switcher for 5v TO 3v at 750mA in a TO-220 7805 footprint

Thursday, March 8th, 2018

An open source small DC/DC 3W switcher to drop 5V to 3V in a 7805 TO-220 pinout from Black Mesa Labs: This post is an open source hardware design from Black Mesa Labs for a simple DC/DC converter for dropping 5V to 3.3V ( or adjustable to lower voltages via...

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Posted in open source, power supply | 1 Comment »

9V/1kV DC/DC converter

Wednesday, July 20th, 2016

Robert Gawron's home insect electrocution project: Currently I'm working on a device to electrocute home insects like cockroaches, progress is small because they are smarter than I thought, but that's a different story. For that project I had to find a source of sufficient high voltage and output power. Presented...

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Posted in hacks | 4 Comments »

Transistor tester powerd from 2 AA batteries

Thursday, May 3rd, 2012

Ferdinand added a dc/dc converter circuit to the transistor tester, allowing it to be powered from 2 AA batteries instead of a single 9volt. This project is similar to our Part Ninja, it's designed to test various electronic components like transistors, diodes, resistors, etc, and display their pin out and...

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Posted in Part Ninja, project logs | 2 Comments »

App note: Layout guidelines for DC/DC switching power supplies

Saturday, February 11th, 2012

Maxim describes how to design PCBs for DC/DC switching power supplies. Learn which traces to keep as short as possible, and the reasoning behind it. The diagram sums up our own approach nicely as well. When working with any buck or boot converter, we: Keep the main power path (shown...

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Posted in app notes | 2 Comments »

Nixie clock HV power supply

Thursday, December 1st, 2011

[embed]http://www.youtube.com/watch?v=Bt6X95MW9Ks[/embed] Luca is building a Nixie clock, and in this post he covers the high voltage power supply section. Nixie tubes are digit displays that use ~170V between the digit wire and a wire mash, to agitate the gas inside the tube. This surrounds the digit wire with a orange...

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Posted in kit biz | 3 Comments »

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