Another Poor Man´s Lab PSU

thingiverse

Update 19.08.2017 evening ;-) : files updated to v2 with added hexmounts for the ac socket and jam sockets on the front for easy mounting. Good news: printed parts are okay. I made some small corrections in the design, now it's ready for printing. So you can start your printer ;-)). Update 18.08.2017: just printing the finished design v1. Update 14.08.2017: I have optimized the airflow system ;-) . Printed the top part successfully. After 12h of printing the bottom part, I had an electric failure in the house.... will restart the print soon! Would be great if you could share your makes!! Inspired from this thing : https://www.thingiverse.com/thing:2336137 I created a cheap Lab PSU for supplying 1-30VDC form a 230V source. The parts are under construction and will be ready for printing soon. I am waiting for the DC step up/down to arrive, then I will see what poti you will need to buy. I have done 2 Versions of the bottom part. Nr. 1 is with fanswitch on the back. Nr. 2 is without fanswitch on the back. For fan protection, you may use this thing: https://www.thingiverse.com/thing:1655833 Here is your shopping list: * 4mm banana socket - any socket with 12mm shaft will fit. * The second option to connect wires is: https://www.aliexpress.com/item/2017-New-Hot-5-Pcs-2-Positions-Connector-Terminal-Push-in-Jack-Spring-Load-Audio-Speaker/32802688094.html?spm=a2g0s.9042311.0.0.ybhKBu * The display: https://www.aliexpress.com/item/DC-0-30V-10A-Voltmeter-Ammeter-Blue-Red-LED-Panel-Amp-Digital-Volt-Gauge-meter/32597785507.html?spm=a2g0s.9042311.0.0.ybhKBu * The on/off switch: https://www.aliexpress.com/item/Baomain-IEC-320-C14-Red-Light-Rocker-Inlet-Male-Power-Supply-Connector-Plug/32706948395.html?spm=a2g0s.9042311.0.0.ybhKBu * The AC/DC converter: https://www.aliexpress.com/item/AC-85-265V-to-DC-12V-8A-AC-DC-50-60Hz-Switching-Power-Supply-Module-Board/32757672580.html?spm=a2g0s.9042311.0.0.ybhKBu * The DC step up/down converter: https://www.aliexpress.com/item/LTC3780-DC-5-32V-to-1V-30V-10A-Automatic-Step-Up-Down-Regulator-Charging-Module/32709008474.html?spm=a2g0s.9042311.0.0.ybhKBu * Optional switch for the fan ( I will make two versions of the case): https://www.aliexpress.com/item/2-Pieces-Lot-New-Green-Mini-2-pin-Round-Toggle-Selflocking-Power-ON-OFF-Push-Button/32799681095.html?spm=a2g0s.9042311.0.0.ybhKBu * The 12V fan: https://www.aliexpress.com/item/1Pcs-Black-2-Pin-12V-40mm-x-10mm-4010-Brushless-DC-Fan-PC-Cooling-Cooler-Fan/32632874913.html * The Potis: + for the current control: https://www.aliexpress.com/item/WH148-B200K-15mm-3Pin-0-5W-200K-OHM-Linear-Taper-Rotary-Carbon-Potentiometer-Pot/2046505046.html?spm=a2g0s.9042311.0.0.ONxA74 + for the voltage control: https://www.aliexpress.com/item/10-PCS-High-Quality-WH148-B500K-Linear-Potentiometer-15mm-Shaft-With-Nuts-And-Washers-500K-OHM/32227585423.html?spm=a2g0s.9042311.0.0.ONxA74