Another Poor Man´s Lab PSU by djdj111

Last crawled date: 2 years, 11 months ago

Update 19.08.2017 evening ;-) : changed the files to v2 with added hexmounts for the ac socket and the jam sockets on the front for easy mounting!
Update 19.08.2017: Good news: the printed parts are OK. Though I did some small corrections in the design. Now the thing is ready for printing. So you can start your printer ;-))
Update 18.08.2017: Iam 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.
Iam 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 the 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.9042311.0.0.1YhDuu
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.9042311.0.0.1YhDuu
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.uQhyV3
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.uQhyV3
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