Re: [volt-nuts] volt-nuts Digest, Vol 130, Issue 5 Fluke 8506/5A
Thanks to everyone, I received a couple of interesting proposals to which I replied directly. Luciano Luciano P. S. Paramithiotti tim...@timeok.it www.timeok.it Da "volt-nuts" volt-nuts-boun...@lists.febo.com A volt-nuts@lists.febo.com Cc Data Mon, 07 Sep 2020 12:00:03 -0400 Oggetto volt-nuts Digest, Vol 130, Issue 5 Send volt-nuts mailing list submissions to volt-nuts@lists.febo.com To subscribe or unsubscribe via the World Wide Web, visit http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com or, via email, send a message with subject or body 'help' to volt-nuts-requ...@lists.febo.com You can reach the person managing the list at volt-nuts-ow...@lists.febo.com When replying, please edit your Subject line so it is more specific than "Re: Contents of volt-nuts digest..." Today's Topics: 1. Re: volt-nuts Digest, Vol 130, Issue 2 (Rob Klein) -- Message: 1 Date: Mon, 07 Sep 2020 09:42:46 +0200 From: Rob Klein To: tim...@timeok.it,Iwa2008 via volt-nuts Subject: Re: [volt-nuts] volt-nuts Digest, Vol 130, Issue 2 Message-ID: Content-Type: text/plain; charset=UTF-8 Hi Luciano, Just in case you missed my response to the group: I have an 8505A with the AC+DC option which I am willing to sell. It also has the Ohms and current options, as well as a defective IEEE interface. I think ? 300,- would be a fair price. Shipping from The Netherlands would be ? 39 (registered with ? 500 insurance). Let me know if you are interested. ?Met vriendelijke groet, Rob Klein verstuurd vanaf mijn smartphone? Op 2 sep. 2020 20:03, om 20:03, tim...@timeok.it schreef: > > Lou, > >I have seen it but outside Europe and in Australia the shipping and >customs costs are prohibitive, especially for items that honestly have >a very low value. > >Also it seems to me that the seller does not guarantee the functioning. > > I would also be fine with an 8505A with AC DC options. > > Luciano > > Luciano P. S. Paramithiotti > tim...@timeok.it > www.timeok.it > > Da "volt-nuts" volt-nuts-boun...@lists.febo.com > A volt-nuts@lists.febo.com > Cc > Data Wed, 02 Sep 2020 12:00:04 -0400 > Oggetto volt-nuts Digest, Vol 130, Issue 2 > Send volt-nuts mailing list submissions to > volt-nuts@lists.febo.com > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > or, via email, send a message with subject or body 'help' to > volt-nuts-requ...@lists.febo.com > > You can reach the person managing the list at > volt-nuts-ow...@lists.febo.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of volt-nuts digest..." > > > Today's Topics: > > 1. Re: Fluke 8506A looking (Lou Amadio) > > > -- > > Message: 1 > Date: Wed, 2 Sep 2020 06:13:34 +1000 > From: Lou Amadio > To: tim...@timeok.it, Discussion of precise voltage measurement > > Subject: Re: [volt-nuts] Fluke 8506A looking > Message-ID: > > Content-Type: text/plain; charset="UTF-8" > > There is one in Australia >https://www.ebay.com.au/itm/Fluke-8506A-Thermal-RMS-digital-multimeter/123942970490?hash=item1cdb93a47a:g:ZeIAAOSw8A1dqC5q=true > Lou > > On Tue, Sep 1, 2020 at 9:46 PM wrote: > > > > > Hi, > > > > I am looking for a Fluke 8506A. I bought one on ebay but it came > > without the AC / DC thermal converter and it didn't even work in DC. > > > > I kept it for spare parts but now I want one cheap. > > > > If you have one or you know where I can go, thank you. > > > > My Agilent 34401 has quite disappointed me because in ACV it is a >> disaster in both low-level accuracy and frequency response. My Fluke >8502 >> with the thrue rms converter in comparison is very flat 10Hz - 50kHz >and >> over. The HP when measuring 12V for example becomes a 5 1/2 digit >while the >> Fluke remains 6 1/2 digit. So my question is: considering AC DC >accuracy > > and stability what are the best 6.5 digits multimeters? > > > > have a nice day, > > > > Luciano > > > > Luciano P. S. Paramithiotti > > tim...@timeok.it > > www.timeok.it > > > > Da "volt-nuts" volt-nuts-boun...@lists.febo.com > > A volt-nuts@lists.febo.com > > Cc > > Data Sat, 22 Aug 2020 12:00:02 -0400 > > Oggetto volt-nuts Digest, Vol 129, Issue 7 > > Send volt-nuts mailing list submissions to > > volt-nuts@lists.febo.com > > > > To subscribe or unsubscribe via the World Wide Web, visit > > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > or, via
Re: [volt-nuts] Panel Meter for Negative Voltage
Larry, Circuit Specialists has several 3-1/2 digit panel meter models that will satisfy your need. They have both LED display models and LCD display models. Examples are: LED models: [ https://www.circuitspecialists.com/digital-panel-meter-cx102a.html | https://www.circuitspecialists.com/digital-panel-meter-cx102a.html ] https://www.circuitspecialists.com/digital-panel-meter-pm-1029a.html LCD models: https://www.circuitspecialists.com/lcd-panel-meter-pm-128a.html https://www.circuitspecialists.com/lcd-panel-meter-pm-138.html https://www.circuitspecialists.com/lcd-panel-meter-pm-1028a.html eBay and AliExpress have similar meters; look for those that use separate power supply wires They usually specify a 9V power source for operation, but there aree models (a bit more expensive) that can use a 5V power source. These have a negative voltage generator circuit .built into the meter for teh A/D converter. See the datasheet for the ICL7106/ICL7107 A/;D Converter for details [ https://datasheets.maximintegrated.com/en/ds/ICL7106-ICL7107.pdf | https://datasheets.maximintegrated.com/en/ds/ICL7106-ICL7107.pdf ] . You're wondering about LED models that don't seem to have a minus sign on the display; since the most significant digit on a 3-1/2 digit meter can only display a "1" digit or a blanked digit, the middle segment is used for the minus sign. This method eliminates the need for a special +/- sign LED digit.. LCD models have the minus sign on the display. Cheers, Dave M From: "Larry McDavid" To: "Jeremy Nichols" , "Volt-Nuts" Sent: Monday, September 7, 2020 3:46:59 PM Subject: Re: [volt-nuts] Panel Meter for Negative Voltage That is not my experience. I bought several kinds on eBay after inquiring and being assured by the seller that the meter would measure and display a negative voltage, only to find on receipt that the meter, powered from +5 vdc, displays zero, close to zero or a nonsensical value when the sense lead is connected to a voltage negative with respect to the return for the meter power. And, on close inspection, the display has no LED segment to indicate a negative voltage. The other dirty little secret about these cheap meters is that their response or settling time can be two seconds! Has anyone actually got such an inexpensive panel meter that measures, displays the negative voltage and indicates that the voltage is negative? If so, please refer me to the sales listing. Larry On 9/7/2020 12:53 PM, Jeremy Nichols wrote: > All of the cheap 3-digit panel meters I’ve purchased have the ability to > read/display positive and negative voltages. > ... -- Best wishes, Larry McDavid W6FUB Anaheim, California (SE of Los Angeles, near Disneyland) ___ volt-nuts mailing list -- volt-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there. ___ volt-nuts mailing list -- volt-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there.
Re: [volt-nuts] Panel Meter for Negative Voltage
There are (at least) a couple different kind: two-lead meters and three-lead meters. The two-lead kind use the same voltage for power as the voltage they’re measuring. They can measure only positive voltages above some minimum amount. I checked one of my three-lead meters measuring a 10-Volt Standard. It uses a power supply voltage between 3.5 and 30 Volts and can measure 0.000 to 33.000 Volts. I guess it therefore can be called a 5-digit Voltmeter. However, it cannot measure negative Volts so I was wrong. My apologies! I would post a photograph but can’t find a reference to whether that is allowed. On Mon, Sep 7, 2020 at 1:46 PM Larry McDavid wrote: > That is not my experience. I bought several kinds on eBay after > > inquiring and being assured by the seller that the meter would measure > > and display a negative voltage, only to find on receipt that the meter, > > powered from +5 vdc, displays zero, close to zero or a nonsensical value > > when the sense lead is connected to a voltage negative with respect to > > the return for the meter power. > > > > And, on close inspection, the display has no LED segment to indicate a > > negative voltage. > > > > The other dirty little secret about these cheap meters is that their > > response or settling time can be two seconds! > > > > Has anyone actually got such an inexpensive panel meter that measures, > > displays the negative voltage and indicates that the voltage is > > negative? If so, please refer me to the sales listing. > > > > Larry > > > > > > On 9/7/2020 12:53 PM, Jeremy Nichols wrote: > > > All of the cheap 3-digit panel meters I’ve purchased have the ability to > > > read/display positive and negative voltages. > > > ... > > > > -- > > Best wishes, > > > > Larry McDavid W6FUB > > Anaheim, California (SE of Los Angeles, near Disneyland) > > -- Jeremy Nichols Sent from my iPad 6. ___ volt-nuts mailing list -- volt-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there.
Re: [volt-nuts] Panel Meter for Negative Voltage
That is not my experience. I bought several kinds on eBay after inquiring and being assured by the seller that the meter would measure and display a negative voltage, only to find on receipt that the meter, powered from +5 vdc, displays zero, close to zero or a nonsensical value when the sense lead is connected to a voltage negative with respect to the return for the meter power. And, on close inspection, the display has no LED segment to indicate a negative voltage. The other dirty little secret about these cheap meters is that their response or settling time can be two seconds! Has anyone actually got such an inexpensive panel meter that measures, displays the negative voltage and indicates that the voltage is negative? If so, please refer me to the sales listing. Larry On 9/7/2020 12:53 PM, Jeremy Nichols wrote: All of the cheap 3-digit panel meters I’ve purchased have the ability to read/display positive and negative voltages. ... -- Best wishes, Larry McDavid W6FUB Anaheim, California (SE of Los Angeles, near Disneyland) ___ volt-nuts mailing list -- volt-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there.
Re: [volt-nuts] Panel Meter for Negative Voltage
All of the cheap 3-digit panel meters I’ve purchased have the ability to read/display positive and negative voltages. On Mon, Sep 7, 2020 at 12:12 PM Larry McDavid wrote: > Does anyone know of an available 3-1/2 to 5 digit inexpensive LED panel > > meter of the type offered by many eBay sellers that will read negative > > voltage? Or, both negative and positive voltage? I have +5 to +12 vdc > > available to power the meter but I need it to display negative voltage. > > > > -- > > Best wishes, > > > > Larry McDavid W6FUB > > Anaheim, California (SE of Los Angeles, near Disneyland) > > > > ___ > > volt-nuts mailing list -- volt-nuts@lists.febo.com > > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > and follow the instructions there. > > -- Jeremy Nichols Sent from my iPad 6. ___ volt-nuts mailing list -- volt-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there.
[volt-nuts] Panel Meter for Negative Voltage
Does anyone know of an available 3-1/2 to 5 digit inexpensive LED panel meter of the type offered by many eBay sellers that will read negative voltage? Or, both negative and positive voltage? I have +5 to +12 vdc available to power the meter but I need it to display negative voltage. -- Best wishes, Larry McDavid W6FUB Anaheim, California (SE of Los Angeles, near Disneyland) ___ volt-nuts mailing list -- volt-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com and follow the instructions there.
Re: [volt-nuts] volt-nuts Digest, Vol 130, Issue 2
Hi Luciano, Just in case you missed my response to the group: I have an 8505A with the AC+DC option which I am willing to sell. It also has the Ohms and current options, as well as a defective IEEE interface. I think € 300,- would be a fair price. Shipping from The Netherlands would be € 39 (registered with € 500 insurance). Let me know if you are interested. Met vriendelijke groet, Rob Klein verstuurd vanaf mijn smartphone Op 2 sep. 2020 20:03, om 20:03, tim...@timeok.it schreef: > > Lou, > >I have seen it but outside Europe and in Australia the shipping and >customs costs are prohibitive, especially for items that honestly have >a very low value. > >Also it seems to me that the seller does not guarantee the functioning. > > I would also be fine with an 8505A with AC DC options. > > Luciano > > Luciano P. S. Paramithiotti > tim...@timeok.it > www.timeok.it > > Da "volt-nuts" volt-nuts-boun...@lists.febo.com > A volt-nuts@lists.febo.com > Cc > Data Wed, 02 Sep 2020 12:00:04 -0400 > Oggetto volt-nuts Digest, Vol 130, Issue 2 > Send volt-nuts mailing list submissions to > volt-nuts@lists.febo.com > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > or, via email, send a message with subject or body 'help' to > volt-nuts-requ...@lists.febo.com > > You can reach the person managing the list at > volt-nuts-ow...@lists.febo.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of volt-nuts digest..." > > > Today's Topics: > > 1. Re: Fluke 8506A looking (Lou Amadio) > > > -- > > Message: 1 > Date: Wed, 2 Sep 2020 06:13:34 +1000 > From: Lou Amadio > To: tim...@timeok.it, Discussion of precise voltage measurement > > Subject: Re: [volt-nuts] Fluke 8506A looking > Message-ID: > > Content-Type: text/plain; charset="UTF-8" > > There is one in Australia >https://www.ebay.com.au/itm/Fluke-8506A-Thermal-RMS-digital-multimeter/123942970490?hash=item1cdb93a47a:g:ZeIAAOSw8A1dqC5q=true > Lou > > On Tue, Sep 1, 2020 at 9:46 PM wrote: > > > > > Hi, > > > > I am looking for a Fluke 8506A. I bought one on ebay but it came > > without the AC / DC thermal converter and it didn't even work in DC. > > > > I kept it for spare parts but now I want one cheap. > > > > If you have one or you know where I can go, thank you. > > > > My Agilent 34401 has quite disappointed me because in ACV it is a >> disaster in both low-level accuracy and frequency response. My Fluke >8502 >> with the thrue rms converter in comparison is very flat 10Hz - 50kHz >and >> over. The HP when measuring 12V for example becomes a 5 1/2 digit >while the >> Fluke remains 6 1/2 digit. So my question is: considering AC DC >accuracy > > and stability what are the best 6.5 digits multimeters? > > > > have a nice day, > > > > Luciano > > > > Luciano P. S. Paramithiotti > > tim...@timeok.it > > www.timeok.it > > > > Da "volt-nuts" volt-nuts-boun...@lists.febo.com > > A volt-nuts@lists.febo.com > > Cc > > Data Sat, 22 Aug 2020 12:00:02 -0400 > > Oggetto volt-nuts Digest, Vol 129, Issue 7 > > Send volt-nuts mailing list submissions to > > volt-nuts@lists.febo.com > > > > To subscribe or unsubscribe via the World Wide Web, visit > > http://lists.febo.com/mailman/listinfo/volt-nuts_lists.febo.com > > or, via email, send a message with subject or body 'help' to > > volt-nuts-requ...@lists.febo.com > > > > You can reach the person managing the list at > > volt-nuts-ow...@lists.febo.com > > > > When replying, please edit your Subject line so it is more specific > > than "Re: Contents of volt-nuts digest..." > > > > > > Today's Topics: > > > > 1. Spade lug/Digistand 6406 manual (tim...@timeok.it) > > 2. Re: Spade lug/Digistand 6406 manual (Andreas Bergmann) > > > > >> >-- > > > > Message: 1 > > Date: Sat, 22 Aug 2020 14:35:31 +0200 > > From: tim...@timeok.it > > To: volt-nuts@lists.febo.com > > Subject: [volt-nuts] Spade lug/Digistand 6406 manual > > Message-ID: > > Content-Type: text/plain; charset=utf-8 > > > > > > Thanks to all those who have also answered me directly.(spade Lugs) > > >> At a flea market I bought two references, one for voltage and other >for >> current, Digistand 6406 and 6426 respectively. I wrote to the >manufacturer >> for the manuals and he sent me the one for 6426 but he told me that >he did >> not find the one that interested me most , ie voltage reference 6406. >I >> repaired both power supplies that had shorted electrolytic capacitors >and > > for one of them I had to replace the custom power transformer. > > >> Now they both work but the voltage calibrator needs to be calibrated. >> Inside are a
