OSH Park
Shared projects
ds1230_eliminator_smd.kicad_pcb
by
mtx_nelis.
2
layer board of
0.73x1.43
inches
(18.57x36.35
mm).
Shared on
June 12th, 2017 22:37.
kx.lm399-osh.zip
by
RigRunner.
4
layer board of
3.16x1.58
inches
(80.14x40.13
mm).
Shared on
June 12th, 2017 22:00.
KX LM399 voltage reference version S02
Simple bootstrapped voltage reference able to provide precise 10V (or any other voltage, depending on resistor values) almost independent of changes in power supply voltage, ambient temperature and output loading. Correct zener operating current of exactly 2mA is maintained by R1, a selected 5ppm/°C or better resistor, connected to the reference regulated output. Accuracy is primarily determined by three factors:
- Temperature coefficient of zener diode.
- 1ppm/°C ratio tracking of R2 and R3 resistors
- Operational amplifier VOS offset errors.
The chopper amplifier LTC2057, with TCVOS of 0.015uV/°C, contributes only 0.0025ppm/°C of output error, thus effectively eliminating TCVOS as an error consideration.
All information is available at: https://xdevs.com/article/kx-ref
Smart Skeleton Pwr Supply board v0.4
by
smartskeleton.
2
layer board of
1.40x0.90
inches
(35.59x22.89
mm).
Shared on
June 12th, 2017 20:11.
Smart Skeleton Main Board v0.5
by
smartskeleton.
2
layer board of
2.00x0.90
inches
(50.85x22.94
mm).
Shared on
June 12th, 2017 20:09.
Mosfet for Heatbed [2oz/0.8mm]
by
VaTTeRGeR.
2
layer board of
2.31x1.61
inches
(58.57x40.79
mm).
Shared on
June 12th, 2017 19:30.
Mosfet breakout-board for 3d printing.
Circuit was tested on perfboard with following components:
*IRF3708 N-Channel Mosfet
*Sharp PC817 Optocoupler
*1/4W Standard Resistors
Input and output voltage can be as low as 3.3V or as high as 24V without damaging the mosfet or optocoupler, you should be able to mix these voltages up in every combination.
The cutout allows a heatsink on the front and a 30 to 40mm 12V fan on the back for optional enhanced cooling.
You can also lay the mosfet flat and use the cutout to stick the heatsink through for a even more slim profile.