Here's a 500VDC meter: https://www.ebay.com/itm/120990711589?hash=item1c2b9bbf25:g:Y~AAAOSw9KZiTu0p
If you go hunting around, you can find sellers that have a bunch of different ones. I've gotten addicted to these things and I've probably got close to a dozen of them in different things in the workshop to monitor voltage & current. *Terry* - I sent you an invite for the HVPS1 google group where you can get all the details of the power supply in the photo. I sold all of the PC boards to others (mainly for cost of shipping) who I hope got a chance to build their own. The 10-turn pot controls a current-limiter, so it runs at less than 1 watt. Take a look at the design report I posted on the forum and let me know if you have other questions. On Tuesday, May 17, 2022 at 6:36:53 PM UTC-7 Terry Bowman wrote: > On May 17, 2022, at 8:42 PM, gregebert <[email protected]> wrote: > > The meters in this power supply were purchased on Ebay for a few dollars > each. > Voltmeter (lower) is 0-500VDC . Ammeter is actually a 0-20VDC meter that > measures the voltage-drop across a precision 1K resistor, to read 0-20mA. > > > Now we're gettin' somewhere. Can you point me in the right direction for > the meters? Every time I search eBay or Aliexpress there are a zillion DPMs > with voltages all over the place. My eyes start to glaze over... > > Did you use a fixed resistor or a multi-turn pot? Wattage? > > Sorry about the noob questions but my eyes aren't open enough today to > glaze over in the first place. I know the theory but I'm having a hard time > with math at the moment. > > > Terry Bowman, KA4HJH > "The Mac Doctor" > > https://www.astarcloseup.com > > “...the book said something astonishing, a very big thought. The stars, it > said, were suns but very far away. The Sun was a star but close up.”—Carl > Sagan, "The Backbone Of Night", *Cosmos*, 1980 > > > -- 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 view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/255297a3-d707-486d-b768-746ed21af0f2n%40googlegroups.com.
