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 includes four rubber feet. The feet can be removed and the board 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.