Re: [time-nuts] power supply for Z3801

For heaven's sake don't try to power equipment from a trickle charger. The thing may be more like a current source than a voltage source. Also it may not be isolated from the safety ground, which would rule out connecting several in series. A good power supply is so crucial to happiness and

Re: [time-nuts] power supply for Z3801

Maybe a nice, quiet open-frame linear like Mouser part number 784-HB48-0.5-AG. But a model with a bit more current would be better. On Wed, Oct 28, 2020 at 6:57 PM jimlux wrote: > The 48-ish volt power supply for my Z3801 gave up the ghost.. > > What's the latest in off-the-shelf power

Re: [time-nuts] power supply for Z3801

Hi Take a look at https://www.trcelectronics.com/mean-well-power-supplies before you decide. Their prices on MeanWell are normally pretty good. Since they are an authorized distributor, you can be pretty sure you are getting legit

Re: [time-nuts] power supply for Z3801

Jim I think anything will do. Internally it hits a bunch of switchers that convert to the internal needs. One funny thing I have run into is that switchers do not always like feeding switchers. Or perhaps a larger switcher to handle the startup current is the trick. I believe on the back of the

Re: [time-nuts] power supply for Z3801

Look at PoE or whatever it's called type supplies - I think the standard is 48 VDC for power over ethernet. I don't know if any of the ones for this purpose are big enough to run the Z3801 though. 48 V is a very common supply, so it should be easy to find an open frame OEM supply. If size and

Re: [time-nuts] power supply for Z3801

I built a 48 volt discrete linear supply into my Z3801 about 18 years ago. Still works fine. It was a tight squeeze but managed to fit it in behind the front panel. I replaced the plug on the back with a standard 3 pin socket assembly. I also replaced the top cover with fine coper screen to get

[time-nuts] power supply for Z3801

The 48-ish volt power supply for my Z3801 gave up the ghost.. What's the latest in off-the-shelf power supplies (external is fine, uncased is fine)? There were plenty of suggestions on the list a few years back, and I can pick one of those up, but hey, someone else might have walked this

Re: [time-nuts] Mentorship needed in learning about Allan Deviation and variation.

On 2020-10-28 2:29, jimlux wrote: I'm still agitating for alien deviation - Microsoft offers it as a suggestion, but not Allan, so it must be true. :-):-):-) Thanks Tom and Jim for the explanations. All clear now. 73  Alberto  I2PHD ___

Re: [time-nuts] Mentorship needed in learning about Allan Deviation and variation.

Hi I’m pretty sure you can find multiple posts from me spelling it any of a half dozen ways ….. :) Bob > On Oct 27, 2020, at 9:29 PM, jimlux wrote: > > On 10/27/20 6:16 PM, Tom Van Baak wrote: >> Alberto, >> Thanks for asking. The correct spelling is Allan variance or Allan >> deviation,