Pre power
About the Pre power PCB
Pre power is an open source PCB design by krzys9876, published on GitHub under the MIT license. It is a 2-layer board measuring 71.8 × 22 mm, with 10 components from 7 distinct parts.
Other key parts include the LM7824_TO220. By type, the board carries 4 diodes, 3 capacitors, 2 connectors and 1 IC.
It belongs with the power & battery designs in this gallery.
From the project
HTPC, Volumio player, power amp, power supply etc.
This is a dump of various files related to the devices that I use in my home entertainment setup.
A miniITX PC enclosed in custom case (see: modushop.pl). The PC is fanless, so I had to choose a relative low power processor and a good radiator. However, since I have a overhead projector with a loud fan it doesn't matter at all.
A Raspberry Pi based Volumio player (see: volumio.com) enclosed in custom case. There are two Pis: one is a controller for two displays, the other is the actual player.
Main components on the Pre power
Pre power bill of materials (BOM)
10 components, 7 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM7824_TO220 | TO-220-3_Vertical | U1 |
| 1 | AC_IN | TerminalBlock_RND_205-00001_1x02_P5.00mm_Horizontal | J1 |
| 1 | DC_OUT | TerminalBlock_RND_205-00001_1x02_P5.00mm_Horizontal | J2 |
| 4 | D | TO-220F-2_Vertical | D1, D2, D3, D4 |
| 1 | 6800u | TerminalBlock_RND_205-00001_1x02_P5.00mm_Horizontal | C1 |
| 1 | 330n | C_Disc_D4.7mm_W2.5mm_P5.00mm | C2 |
| 1 | 100u | C_Disc_D4.7mm_W2.5mm_P5.00mm | C3 |
Pre power design files
The KiCad project lives in the krzys9876/htpc_rig repository on GitHub; these links point at the commit this page was built from.
Pre power: common questions
How big is the Pre power PCB?
The Pre power measures 71.8 × 22 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Pre power?
10 components, from 7 distinct parts. The full bill of materials is listed on this page.
Where can I download the Pre power design files?
From the krzys9876/htpc_rig repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Pre power design in my own project?
Yes, under the terms of its MIT license, which krzys9876 chose for the repository.
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