Ryobi bench top power supply

thingiverse

Much credit to [pwkalahar](https://www.thingiverse.com/thing:2467237) for the idea. I went a step further, but had to start from scratch since this is intended for a DPH3205. This is a portable bench top power supply. I really just wanted to make my TS100 portable. Since I have so many of these batteries, it seemed logical, but I wanted to run it at 24v. So I designed this to fit a [RD DPH3205](https://www.aliexpress.com/item/RD-DPH3205-Buck-boost-converter-Constant-Voltage-current-Programmable-digital-control-Power-Supply-color-LCD-voltmeter/32762131242.html?spm=a2g0s.9042311.0.0.27424c4dOTqKur) power supply. It may fit even more versions like the 50v15a, but I don't have them to see if they fit. Some also have the cooling fans in a different orientation which may affect cooling. Fitment is just a wee bit on the tight side where I only had to run a deburring tool. Also the back wall, where the circuit board sits, is 96.4mm x 84mm in case you want to try to fit a different power supply board. On the input side, you will need to make a mental note to never plug in a power brick while you have a ryobi battery installed too. I don't have any diode protection, just an inline [On/Off Switch](https://www.aliexpress.com/item/10PCS-3-Pin-3A-250V-10-15mm-Black-Button-Rocker-Switch-ON-OFF-AC-10X15-Mini/32838043771.html?spm=a2g0s.9042311.0.0.27424c4dwttI1D) as the safety. For the battery, any ryobi 18v battery will do. I actually tracked down the [contact plate holder](https://www.repairclinic.com/PartDetail/Contact-Plate-Holder-Ass-Y/300001044/4125137) that ryobi uses in all the tools for the battery contacts. I didn't feel like getting more creative when I found them for only .75¢ +s&h. Output: [Banana Jack](https://www.amazon.com/gp/product/B00UHFF2ME/ref=oh_aui_search_detailpage?ie=UTF8&psc=1) [DC jack](https://www.aliexpress.com/item/Hot-sales-10Pcs-DC-022-5-5-2-1-5-5x2-1mm-5-5-2-1mm/32259883750.html?spm=a2g0s.9042311.0.0.27424c4dwttI1D) [XT30](https://www.aliexpress.com/item/5-pairs-female-and-male-XT30-Bullet-Connectors-Plugs-for-RC-Lipo-Battery-FPV-airplane-quadcopter/32662454319.html?spm=a2g0s.9042311.0.0.27424c4dT3KvxI) and [USB](https://www.amazon.com/gp/product/B0094DXENY/ref=oh_aui_search_detailpage?ie=UTF8&psc=1) with its own [LM2596]([LM2596](https://www.aliexpress.com/item/LM2596-DC-DC-Adjustable-buck-converter-Step-Down-Power-Reverse-Polarity-Protection-LED-Indicator-Enable-Interface/862353207.html?spm=a2g0s.9042311.0.0.27424c4dOTqKur)) to ensure it will always be at 5v no matter what the DPH3205 is set to. There is a notch cut out where the LM2596 sits quite nicely without adhesives, but feel free to add it if you wish. Shopping list: --same links above, just all together-- [DPH3205](https://www.aliexpress.com/item/RD-DPH3205-Buck-boost-converter-Constant-Voltage-current-Programmable-digital-control-Power-Supply-color-LCD-voltmeter/32762131242.html?spm=a2g0s.9042311.0.0.27424c4dOTqKur) [LM2596](https://www.aliexpress.com/item/LM2596-DC-DC-Adjustable-buck-converter-Step-Down-Power-Reverse-Polarity-Protection-LED-Indicator-Enable-Interface/862353207.html?spm=a2g0s.9042311.0.0.27424c4dOTqKur) [Contact Plate Holder](https://www.repairclinic.com/PartDetail/Contact-Plate-Holder-Ass-Y/300001044/4125137) [XT30](https://www.aliexpress.com/item/5-pairs-female-and-male-XT30-Bullet-Connectors-Plugs-for-RC-Lipo-Battery-FPV-airplane-quadcopter/32662454319.html?spm=a2g0s.9042311.0.0.27424c4dT3KvxI) [On/Off Switch for power brick](https://www.aliexpress.com/item/10PCS-3-Pin-3A-250V-10-15mm-Black-Button-Rocker-Switch-ON-OFF-AC-10X15-Mini/32838043771.html?spm=a2g0s.9042311.0.0.27424c4dwttI1D) [Female DC Jacks](https://www.aliexpress.com/item/Hot-sales-10Pcs-DC-022-5-5-2-1-5-5x2-1mm-5-5-2-1mm/32259883750.html?spm=a2g0s.9042311.0.0.27424c4dwttI1D) [USB Female Connector](https://www.amazon.com/gp/product/B0094DXENY/ref=oh_aui_search_detailpage?ie=UTF8&psc=1) [Banana Jack](https://www.amazon.com/gp/product/B00UHFF2ME/ref=oh_aui_search_detailpage?ie=UTF8&psc=1) For wiring this up, the DHP3205 has 4 inputs and 4 outputs. DC-in and inline switch take 2 inputs and the Ryobi contacts take up the other 2. The LM2596 for 2 outputs and the banana jacks take up the last 2. You can then use the banana jacks to feed power to the DC-out and XT30, which hopefully can be seen from the included pictures. Thanks for stopping by and I hope you find this useful.