got a few pc power supplys and some wall warts too mike
On Sep 29, 4:11 am, John Rehwinkel <[email protected]> wrote: > > Were on a fixed income and I was figuring I could get some advice > > about suppliers from this board. I need a supplier that will let me > > buy $20-30 worth of parts at a time until I have all the parts > > together. > > A cheap way to get the high-voltage power supply is to hook a pair of small > step-down > transformers back-to-back. You can rectify the low-voltage loop between them > for your > logic supply, too. It should be possible to round up a couple of 12 volt or > so "wall wart" > supplies for little or no money. Try to find one that outputs AC, then you > can leave it > intact to feed your project. The other one can be any transformer based > supply, just > remove it from its housing, and hook its transformer up in reverse to supply > your high > voltage. If it's a DC supply, you can grab its diode(s) (and filter > capacitor, and regulator, > if it has these parts) to get started on your logic supply. > > With just the back-to-back transformers, along with a diode capable of > holding off a few > hundred volts, a current limiting resistor, and ideally a small high-voltage > capacitor, you > can light up a nixie (they'll work on pulsing DC, but most of use use some > sort of filter > capacitor in a finished design). You can steal suitable high voltage diodes > and even > a filter capacitor from an ordinary PC power supply. Those too can often be > had cheap > or free. Come to think of it, most line-operated switching power supplies > can donate these > parts, and these days, a lot of wall warts are switchers instead of > transformer based supplies, > so if you happen to grab one of those, you still have some useful parts. > > - John KG4L -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
