3 output, low noise DC power supplyDesigned by Geppetto Electronics, Ships from United States of America
What is it? This board is a ±12 and +5 volt power supply. It is intended to power the Thunderbolt GPS disciplined oscillator. It can supply +12V @ 800 mA, +5V @ 500 mA and -12V @ 50 mA from a 15W 1...Read More…
This board is a ±12 and +5 volt power supply. It is intended to power the Thunderbolt GPS disciplined oscillator. It can supply +12V @ 800 mA, +5V @ 500 mA and -12V @ 50 mA from a 15W 13.8-15 VDC input.
The +5 and -12 supplies are hybrid switcher + LDO designs. The switching supplies yield good efficiency while the LDOs adds ripple and noise rejection. The -12V switcher is based on the MC34063 and the +5V switcher is based on the AP1509. The +12 output uses an LDO fed directly from the input. Typical noise and ripple on each output is less than 10 mV P-P.
The output is a standard 4 pin .1" SIP header, which is included. Wiring and connectors beyond that are not included. The board can be screwed into an enclosure with #4-40 hardware. The mounting holes are electrically grounded.
The optional AC power supply supplies 15W @ 15VDC from 90-264 VAC, 50/60 Hz. The input jack is a standard 2.1mm barrel connector, center-positive.
The Thunderbolt GPSDO requires relatively low noise power input, particularly on the -12 volt input. I decided to design something smaller and less noisy than the surplus laptop power supply I had been using.
While it was designed for the Thunderbolt, it's useful for any application that requires relatively low noise ±12 and +5 volt power.
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I design and build small, useful electronic things. I started in 2013 after leasing an electric car and deciding that I could build my own charging station. Since then, I've gone on to design lots of things to fill particular needs.
The name of my store is partly a nod to Arduino's Italian roots, since Arduino got me into microcontroller engineering, and that led to everything else. I also like the image of Geppetto, working away in his workshop making little things that come to life.