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#1
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
Put this on Ebay. Real clean unit. It works although I didn't have it
long enough to figure out how to use the coil tester stuff. I bought a package deal and am separating it up to try and help cover the LC102 I just bought. If you want to send it in for calibration, Goggle Sioux Falls on AGA. A tech there just gave out the addy for a company where this was made that does repairs and calibration a week or so ago. It is double bubbled and then packed in a larger sturdy box full of peanuts. Your choice of shipping. Pics show measuring a 100uf electrolytic cap and set up to do reforming (can take and hour). I used it to reform that same 100uf cap in just a few minutes. Watch for an ESR meter, manuals, field calibration unit for the LC53, and other stuff this week...Thanks for reading Ebay #260388540185 |
#2
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
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#3
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
On Apr 8, 2:56*am, wrote:
On Apr 7, 6:24*pm, JP wrote: On Tue, 7 Apr 2009 00:09:07 -0700 (PDT), wrote: On Apr 6, 7:15 am, JP wrote: Put this on Ebay. Real clean unit. It works although I didn't have it long enough to figure out how to use the coil tester stuff. I bought a package deal and am separating it up to try and help cover the LC102 I just bought. If you want to send it in for calibration, Goggle Sioux Falls on AGA. A tech there just gave out the addy for a company where this was made that does repairs and calibration a week or so ago. It is double bubbled and then packed in a larger sturdy box full of peanuts. Your choice of shipping. Pics show measuring a 100uf electrolytic cap and set up to do reforming (can take and hour). I used it to reform that same 100uf cap in just a few minutes. Watch for an ESR meter, manuals, field calibration unit for the LC53, and other stuff this week...Thanks for reading *Ebay #260388540185 This is not the tool for reforming lytics. A bench HV supply with a limiting resistor or a homemade transformer rectifier and light bulb current limiter (and the resistor) work MUCH better. *The Z Meter is good for finding bad large value LV lytics and RF coils in switcher supplies, but NOT HV lytics, HV mica or oil caps or big iron core inductors. Like most Sencore pieces it is fairly cheaply built and optimized for TV/VCR guys. According to the manual it reforms caps.That's my best answer.So where is the drawing ro schematic of what you are talking about since I am selling this one?- Hide quoted text - - Show quoted text - *It will reform caps but to what voltage?? And it's a very expensive way to reform caps when all you need is a DC bench supply, commercial or homebrew. The supply does not need to be regulated or quiet and may put out almost no current. *Also to reform lytics you want to warm them up to a higher temperature. So add on a heat lamp or a box with a light bulb in it.- Hide quoted text - - Show quoted text - I have 2 LC77s and they *will* reform lytics up to 1000vdc. Its just a PITA beacause you have to use the handle to hold the little plunger thing against the "leakage" button. ***DO NOT*** heat up caps *while reforming*. Its fine to heat them before to rejuvinate the electrolyte, but let them cool to room temp before attempting to reform. |
#4
Posted to alt.guitar.amps,sci.electronics.equipment,sci.electronics.repair,rec.radio.amateur.boatanchors,rec.audio.tubes
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
JP wrote:
According to the manual it reforms caps.That's my best answer.So where is the drawing ro schematic of what you are talking about since I am selling this one? It does, but it's not a really good way to reform caps. Here is a schematic, though you must have a fixed-width font to see it: +-----)(--------+ | YOUR CAP | | | | o--------)-------+ | / \ | | +--o/+ -\o----+ | \ / | \ / 1kv bridge | o 1K ohm | or more | 1W or so | 115vac .2a | +uuuuuuuuuuuuuuuu+ ================== +mmmmmmmmmmm+-------------------/ |= | on off ( | +-------------------o/ o--------\_l= 117vac The transformer output should be maybe half to 3/4 the rated voltage on the capacitor. This is really just the front end of a power supply with an enormously high value current limiting resistor so that the cap gets charged up much more slowly than it normally would in a power supply application. You can put a load shunt resistor across the cap if you want it to charge up even more slowly and if you want to reduce the maximum voltage it charges up to. You can alternatively take the attitude that if a cap needs to be reformed it should probably be replaced instead. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#5
Posted to alt.guitar.amps,sci.electronics.equipment,sci.electronics.repair,rec.radio.amateur.boatanchors,rec.audio.tubes
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
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#6
Posted to alt.guitar.amps,sci.electronics.equipment,sci.electronics.repair,rec.radio.amateur.boatanchors,rec.audio.tubes
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
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#7
Posted to alt.guitar.amps,sci.electronics.equipment,sci.electronics.repair,rec.radio.amateur.boatanchors,rec.audio.tubes
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
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#8
Posted to alt.guitar.amps,sci.electronics.equipment,sci.electronics.repair,rec.radio.amateur.boatanchors,rec.audio.tubes
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
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#9
Posted to alt.guitar.amps,sci.electronics.equipment,sci.electronics.repair,rec.radio.amateur.boatanchors,rec.audio.tubes
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
On Wed, 8 Apr 2009 21:24:31 -0700 (PDT),
wrote: I have 2 LC77s and they *will* reform lytics up to 1000vdc. Its just a PITA beacause you have to use the handle to hold the little plunger thing against the "leakage" button. Talk about a mickeymouse arrangement! Then again we ARE talking Sencore, not HP or Tek. That ASCII schematic wasn't exactly a Visio either...there are digital groups for binaries.. |
#10
Posted to alt.guitar.amps,sci.electronics.equipment,sci.electronics.repair,rec.radio.amateur.boatanchors,rec.audio.tubes
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
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#11
Posted to alt.guitar.amps,sci.electronics.equipment,sci.electronics.repair,rec.radio.amateur.boatanchors,rec.audio.tubes
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
JP wrote: How come every time I post some FA that there is always some know it all that has some **** to say about it trying to queer the sale?. Auction and for sale are not allowed on the sci.electronis newsgroups. A seperate newsgroup was created at the same time for those listings. It is: news:misc.industry.electronics.marketplace As far as people giving you a load of crap for ugnoring the charter for these groups? Good for them. -- And another motherboard bites the dust! |
#13
Posted to alt.guitar.amps,sci.electronics.equipment,sci.electronics.repair,rec.radio.amateur.boatanchors,rec.audio.tubes
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
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#14
Posted to alt.guitar.amps,sci.electronics.equipment,sci.electronics.repair,rec.radio.amateur.boatanchors,rec.audio.tubes
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
On Fri, 10 Apr 2009 09:11:49 -0400, "Michael A. Terrell"
wrote: :misc.industry.electronics.marketplace **** you Terrell! Crawl back into your hooch and shut the **** up private! |
#15
Posted to alt.guitar.amps,sci.electronics.equipment,sci.electronics.repair,rec.radio.amateur.boatanchors,rec.audio.tubes
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
On Fri, 10 Apr 2009 09:20:36 -0400, "Michael A. Terrell"
wrote: JP wrote: On 8 Apr 2009 10:36:27 -0400, (Scott Dorsey) wrote: JP wrote: According to the manual it reforms caps.That's my best answer.So where is the drawing ro schematic of what you are talking about since I am selling this one? It does, but it's not a really good way to reform caps. Here is a schematic, though you must have a fixed-width font to see it: +-----)(--------+ | YOUR CAP | | | | o--------)-------+ | / \ | | +--o/+ -\o----+ | \ / | \ / 1kv bridge | o 1K ohm | or more | 1W or so | 115vac .2a | +uuuuuuuuuuuuuuuu+ ================== +mmmmmmmmmmm+-------------------/ |= | on off ( | +-------------------o/ o--------\_l= 117vac The transformer output should be maybe half to 3/4 the rated voltage on the capacitor. This is really just the front end of a power supply with an enormously high value current limiting resistor so that the cap gets charged up much more slowly than it normally would in a power supply application. You can put a load shunt resistor across the cap if you want it to charge up even more slowly and if you want to reduce the maximum voltage it charges up to. You can alternatively take the attitude that if a cap needs to be reformed it should probably be replaced instead. --scott The manual states that the Sencore uses very low amperage to reform caps...maybe micro amps IIRC...don't see the difference except that it adjusts with a switchinstead of having to swap out components and rebuild a power supply for each value...and has a readout to show you when the caps is "done" ...just my 2 cents... Keep digging a hole. The basic circuit shown is just one way to reform electrolytics. A better circuit uses a Variac before the transformer to let you set it anywhere you want it, and use a resistor to limit the current to the desired range. A mA or uA meter in series with the negative lead to monitor the current. its been done that way from the first days of manufacturing electrolytics. BTW, have you ever USED the Sencore LCR bridge for actual work? I have. I have also used HP. The only 'feature' the Sencore meter had was the ability to measure ESR. You can buy a kit to do the same thing for about $60, or 'roll your own' for $5. Oh thank you for your infinate knowledge there dumb ass...Caps are used in two different circuits and are tested different for DC than AC...and I am well aware that manufacturers use a bridge...so ****ing what? You have never had something to say to me other than mean mouthed bull****. So go back to the glory hole cafe and get lost asshole! |
#16
Posted to alt.guitar.amps,sci.electronics.equipment,sci.electronics.repair,rec.radio.amateur.boatanchors,rec.audio.tubes
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
On Fri, 10 Apr 2009 09:25:47 -0400, "Michael A. Terrell"
wrote: wrote: I have 2 LC77s and they *will* reform lytics up to 1000vdc. Its just a PITA beacause you have to use the handle to hold the little plunger thing against the "leakage" button. Talk about a mickeymouse arrangement! Then again we ARE talking Sencore, not HP or Tek. So, you think HP or Tektronix would leave a pair of clip leads powered with up to 700 VDC available for someone to get shocked? MORON. They won't risk the liability and Sencore doesn't, either. Sencore is not laboratory grade equipment, it is made for repair work. That is a market that HP and Tektronix has almost always priced themselves out of. The Sencore equipment was designed to be carried on a service truck, or to take as baggage on a plane to the customer's site to get equipment back on line. Like you knwo what the **** you are talking about..**** you Terriorist! |
#17
Posted to alt.guitar.amps,sci.electronics.equipment,sci.electronics.repair,rec.radio.amateur.boatanchors,rec.audio.tubes
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
Michael A. Terrell wrote:
So, you think HP or Tektronix would leave a pair of clip leads powered with up to 700 VDC available for someone to get shocked? MORON. No, but GenRad did. I have a ZM-11/U around here somewhere and you can get a pretty nasty shock off the bridge output if it's set to balance charged caps. You can also blow up low voltage caps if you try and measure them too, unfortunately.... --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#18
Posted to alt.guitar.amps,sci.electronics.equipment,sci.electronics.repair,rec.radio.amateur.boatanchors,rec.audio.tubes
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FA: Sencore LC53 Z Meter with Probe and AC Cord # 260388540185
Scott Dorsey wrote: Michael A. Terrell wrote: So, you think HP or Tektronix would leave a pair of clip leads powered with up to 700 VDC available for someone to get shocked? MORON. No, but GenRad did. I have a ZM-11/U around here somewhere and you can get a pretty nasty shock off the bridge output if it's set to balance charged caps. You can also blow up low voltage caps if you try and measure them too, unfortunately.... How many years has General Radio been out of business? One of the regulars on the sci.electronics.* groups was an EE there, and has told similar stories of bad design practices. -- And another motherboard bites the dust! |
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