Body
Hi Warren, I can get old parts that are no longer needed from my company, recently we scrapped a 15 kW asynchronous motor unfortunately too heavy to take it with us. laughing. Mostly I search on ebay Germany there you can get a lot of old industrial electronics, what is the right is always the question. Greetings Sven
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-------- Ursprüngliche Nachricht --------
Von: "Warren Keillor [email protected] [EVGRAY]" <[email protected]>
Datum: 03.10.18 16:59 (GMT+01:00)
An: [email protected]
Betreff: Re: Aw: Re: AW: Re: AW: Re: AW: Re: Re: [EVGRAY] Ferroresonance amplified by piezoelectric elements
SvenWho collects electronic junk in Germany? You need to get to know where stuff that is surplus, goes, and who has it. Learn their names, and visit them often. I am sure you have these weird eccentric guys, there in Germany, too, like we have in Canada. It may be a group of fringe ham radio hobbiests, or just equipment freaks.In my film work, we always need what we called electronic "gorp": stuff that looked complex, and had shadow catching details, useful for background fill in science fiction films.Oh those electrical panels in space stations always seem to catch fire, being as they seem, full of 1950's era obsolete military, industrial garbage.That is how I scored my high voltage, high amperage silver/ mica capacitor, from the dross of pallets of this kind of thing.Once you contact one guy, that person will know more people to send you to.Get in your car and start driving, visiting guys in person.Cheers WarrenSent from Yahoo Mail on Android
On Wed, 3 Oct 2018 at 8:18 AM, [email protected] [EVGRAY]<[email protected]> wrote:
Not yet, I have to get such a silva Mica capacitor first or more because they have very very small capacity values.
regards
Sven
Gesendet: Mittwoch, 03. Oktober 2018 um 12:34 Uhr
Von: "Norman Wootan [email protected] [EVGRAY]" <[email protected]>
An: [email protected]
Betreff: Re: AW: Re: AW: Re: AW: Re: Aw: Re: [EVGRAY] Ferroresonance amplified by piezoelectric elements
http://www.rexresearch.com/1hodomra/05-5-20.htm Joel & I became great friends with Greg and it was one of his Mini MRAs that tested 256X over unity and was submitted to Patent Office as final affidavit! Greg (RIP) was an Engineer at RCA Corp. Sven, this is the use of silver mica caps as piezo substitute!
On 10/2/2018 5:38 PM, SF [email protected] [EVGRAY] wrote:
Hi Norman, I would like to try a Silva Mica capacitor as additional capacity to the mp oil filled capacitors around the q value increase if it is possible have already stable values over q 30. extraction about diodeplug, search I still a way the scrs later after the peak trigger, I think through the phase shift has the classic phase control a problem, I still think about a inductor after the ignition energy something later after supplies. Greetings Sven
Von meinem Samsung Gerät gesendet.
-------- Ursprüngliche Nachricht --------
Von: "Norman Wootan [email protected] [EVGRAY]" <[email protected]>
Datum: 03.10.18 00:10 (GMT+01:00)
An: [email protected]
Betreff: Re: AW: Re: AW: Re: Aw: Re: [EVGRAY] Ferroresonance amplified by piezoelectric elements
We substituted the planar, silver mica capacitors 680pf into the mini MRA very successfully. They mimic the piezo in an electronic circuit!
On 10/2/2018 4:27 PM, SF [email protected] [EVGRAY] wrote:
Hi Mick, in other words Mica silver or Mica capacitors have the same effect as piezo materials, what is cog? Because I with low frequencies work do I need already capacities in uf area. Under Mica can I find what. Greetings Sven
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-------- Ursprüngliche Nachricht --------
Von: "Mick [email protected] [EVGRAY]" <[email protected]>
Datum: 02.10.18 22:14 (GMT+01:00)
An: [email protected]
Betreff: Re: AW: Re: Aw: Re: [EVGRAY] Ferroresonance amplified by piezoelectric elements
Sven,
Anytime one adds more capacitors Q drops as ESR increases so it works better if one can use the piezo for both functions, if possible. Many capacitors are also piezoelectric materials such as the mica and COG. Lower frequencies do not matter as much.
On 10/2/2018 12:12 PM, SF [email protected] [EVGRAY] wrote:
Hi Mick, so I could try in addition to the caps piezo elements for this purpose to turn, there is there an increase of the q value or did you only with piezo worked?
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-------- Ursprüngliche Nachricht --------
Von: "Mick [email protected] [EVGRAY]" <[email protected]>
Datum: 02.10.18 18:00 (GMT+01:00)
An: [email protected]
Betreff: Re: Aw: Re: [EVGRAY] Ferroresonance amplified by piezoelectric elements
Hi Sven
Yes I have used the little piezo transformers and have also used disks in a tank circuit acting as the capacitance. On the transformers I was able to get the most gain by using sine waves as they like a clean signal without distortion components being of high Q at the designed frequency. Something I need to get back to in order to determine more facts.
On 10/2/2018 5:37 AM, [email protected] [EVGRAY] wrote:
Hello Mick,
Many thanks for the hints, unfortunately I can not find distribution in Germany or I have to search again.
Have you ever included piezo elements in a reactive circuit?
regards
Sven
Gesendet: Montag, 01. Oktober 2018 um 21:01 Uhr
Von: "Mick [email protected] [EVGRAY]" <[email protected]>
An: [email protected]
Betreff: Re: [EVGRAY] Ferroresonance amplified by piezoelectric elements
Sven
Have a look here:
http://steminc.com/
http://iopscience.iop.org/article/10.7567/JJAP.55.086702
On 10/1/2018 7:57 AM, [email protected] [EVGRAY] wrote:
Hello everyone, is it possible to use resonant capacitors in the case of FR transformer in addition to switching piezo elements in parallel or do the thin elements hold over 400V?
The MRA of Norman works with a large piezo element, unfortunately I can not get something like this or I search wrong via google.
regards
Sven