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Date
Another draft: 8160A
http://www.k100.biz/ebooks/8160A_draft.pdf As usual, any contribution/correction welcome. Thanks
By Gianni Becattini · #143101 ·
Re: HP8560a smoke came out
I think the problem is not really correctable given the circumstances of a system that injects power back into the grid. The problem is that losses are against you. When you draw from the grid, your
By Chuck Harris · #143100 ·
Re: HP8560a smoke came out
Yes, I'm sure solutions do exist.?? I'm more likely to either find higher rated caps or just leave them out. Glenn
By glenn · #143099 ·
Re: HP8560a smoke came out
Someplace, somewhere, you might be able to find a voltage regulator.? I suspect that they can be either the saturable reactor kind, or perhaps an old servo/motor driven autotransformer.? It's
By Harvey White · #143098 ·
Re: HP8560a smoke came out
Hi Harvey *Afraid not.* Solar panels are very popular in Australia with at least 1/3rd of homes having roof top solar panels.? In my street of about 30 homes more than half have solar. What this
By glenn · #143097 ·
Re: Mounting HP Iron in 19" Racks
This is not directly related to the topic, but our local HAM club has at least three full size racks we need to get rid of. This is the Anne Arundel Amateur Radio club in Davidsonville, MD. Drop me a
By Jim Simpson · #143096 ·
Re: Mounting HP Iron in 19" Racks
All of my 19" racks have mounting holes front and back, as usual, but also have mounting holes on the sides as well. I drill pieces of 1-1/2" aluminum angle to fit the mounting holes on the side when
By Chuck Harris · #143095 ·
Re: Mounting HP Iron in 19" Racks
Angles from old bed frames. Brilliant! I need some and never thought of those and they're indeed ubiquitous! Thanks, Barry - N4BUQ
By n4buq · #143094 ·
Re: Mounting HP Iron in 19" Racks
I used to do this with scrounged angle iron from bed frames people would throw out on trash day.? Some are pretty wide and I can attest to the wood strip method to keep things centered.? A sawzall
By Peter Gottlieb · #143093 ·
Re: HP-1421A Q109 Voltages
I got a chance to test the circuit just a bit. I placed a 47k resistor between the base of Q109 and ground. That caused the lamp to illuminate so the transistor is still good. I just need to determine
By n4buq · #143092 ·
Re: Mounting HP Iron in 19" Racks
The cantilever shelves work great. Especially for the smaller stuff, like putting two 1/2 width units together. I have used a lot of Navepoint stuff in the past. This is an option that I like for
By Michael Bierlein · #143091 ·
Re: HP8560a smoke came out
Rifa caps are not happy with high voltages.? Could you adjust your solar panel inverter to only 240 volts? Harvey
By Harvey White · #143090 ·
Re: Mounting HP Iron in 19" Racks
I've been using these (from Amazon) for years. They work pretty well: AC Infinity Vented Cantilever 2U Universal Rack Shelf, 16" Deep, for 19¡± equipment racks. Heavy-Duty 2.4mm Cold Rolled Steel,
By Dave Daniel · #143089 ·
Re: Mounting HP Iron in 19" Racks
This is a better solution than mounting ears. It is probable that the ears alone will not properly support the weight of the gear. Glenn
By Glenn Little · #143088 ·
Re: HP8560a smoke came out
Thanks Henning re *delta marker*. Been a while since I operated this SA. I just confirmed thats the level issue. Re *the cap across the mains* , that's what i suspected initially as I had it happen on
By glenn · #143087 ·
Re: Mounting HP Iron in 19" Racks
Forgot to mention, most gear should not be mounted only by the front ears or flanges - only the very lightest and shortest (front to back) items are safe this way. Sides and back support is needed for
By Ed Breya · #143086 ·
Re: Mounting HP Iron in 19" Racks
I have a bunch of fairly heavy aluminum 90 degree angle-iron pieces scrounged up long ago. They are about 2" by 3/16" flats by 30" long, and easy to drill holes anywhere and attach with the usual
By Ed Breya · #143085 ·
Re: Mounting HP Iron in 19" Racks
I have some of the front mount shelves but the cheap ones won't support the nice HP iron. They deflect too much. That picture was for the Mainframe SRS-4-F. I can get them at my local supplier in
By Dave Miller · #143084 ·
Re: Mounting HP Iron in 19" Racks
I use equipment shelves that only mount from the front, but the one you show is better mechanically.? Where do you get them?? Do you have a part number? Pter
By Peter Gottlieb · #143083 ·
Mounting HP Iron in 19" Racks
I have run out of floor and bench space and it's time start filling up the racks I have stored away. :-( Unfortunately most of the equipment does not have mounting ears. Last time I looked at them
By Dave Miller · #143082 ·