<https://lh3.googleusercontent.com/-rVysNyM9FmU/WWcnUs2WtZI/AAAAAAAAApI/BPxX1HX6vH0Wxkm5pR3I3NOzOv2ln6SoQCLcBGAs/s1600/400V_100mA.jpg> <https://lh3.googleusercontent.com/-80JjFFCSgN0/WWcnbSNeG5I/AAAAAAAAApM/zwTYeXXVYPsOly9dTlBCeEjdRQ4roTFkQCLcBGAs/s1600/V24in_Test.jpg>
I design a HV DC-DC PSU, you can see the datasheet as below. Max output 390V@100mA https://drive.google.com/open?id=0B4j8u6jWqs0QV3dJaVpXUk9jMmFQNUhCOGdYbWRnRk9mVi1F Jack Lynch於 2017年7月13日星期四 UTC+8上午3時02分31秒寫道： > > Hi! > > I would like to adapt the design found here > <http://www.desmith.net/NMdS/Electronics/NixiePSU.html> for a variable > 300V max output, instead of around 180–220V: > > > <https://lh3.googleusercontent.com/-s-0Y3HUtvnQ/WWZxbEdcAtI/AAAAAAAABl8/kj1ECWl4iR0tEYFTyzObW48sHwiO4erSACLcBGAs/s1600/Screen%2BShot%2B2017-07-12%2Bat%2B2.59.12%2BPM.png> > > > I understand that the output voltage is adjusted by the resistors R1 and > R2, per the MAX1771 datasheet > <https://datasheets.maximintegrated.com/en/ds/MAX1771.pdf>: > > > <https://lh3.googleusercontent.com/-dpjgDtRGWhg/WWZxvx4w4II/AAAAAAAABmA/GhOM6eWGUVg-WVsYlIytvXjMQjOpjOolQCLcBGAs/s1600/Screen%2BShot%2B2017-07-12%2Bat%2B2.59.00%2BPM.png> > > > and that in this case a potentiometer is used to vary the voltage of R1. > However, I'm not sure how the above equations are used to arrive at the > voltage bounds specified in the schematic. Could someone explain? Using > those equations, what value of R2 should I substitute in for the one used > in the schematic to arrive at my desired maximum voltage of 300V? > > Thanks! > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/4fd26ec6-40ff-4ac7-970d-d1f113ba8153%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
