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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Ping: Igor - High Voltage
Igor,
For some reason it sticks in my mind that you have posted about playing with high voltage in the past. Is this of any use to you: http://www.monkeybutler.com/tmp/DSCF0001.jpg http://www.monkeybutler.com/tmp/DSCF0002.jpg If so it's yours for the shipping. Otherwise I'll offer it to the next person who can use it. I'm a little leary of ebaying something like this. Steve P. |
#2
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Ping: Igor - High Voltage
Monkey Butler wrote:
Igor, For some reason it sticks in my mind that you have posted about playing with high voltage in the past. Is this of any use to you: http://www.monkeybutler.com/tmp/DSCF0001.jpg http://www.monkeybutler.com/tmp/DSCF0002.jpg If so it's yours for the shipping. Otherwise I'll offer it to the next person who can use it. I'm a little leary of ebaying something like this. Steve P. Brain is weak tonight but is that a probe for checking 2nd anode voltage on a tv picture tube? Wes |
#3
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Ping: Igor - High Voltage
Wes wrote:
Monkey Butler wrote: Igor, For some reason it sticks in my mind that you have posted about playing with high voltage in the past. Is this of any use to you: http://www.monkeybutler.com/tmp/DSCF0001.jpg http://www.monkeybutler.com/tmp/DSCF0002.jpg If so it's yours for the shipping. Otherwise I'll offer it to the next person who can use it. I'm a little leary of ebaying something like this. Steve P. Brain is weak tonight but is that a probe for checking 2nd anode voltage on a tv picture tube? It is. They're good for DC, and dangerous for AC, unless you happen to have a meter with an AC range input impedance of 10Mohm. most meters don't, and you'll get way way wrong and low readings. |
#4
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Ping: Igor - High Voltage
On 2/28/2010 7:36 PM, Wes wrote:
Brain is weak tonight but is that a probe for checking 2nd anode voltage on a tv picture tube? Wes That is one common use for those. That one plugs into a multimeter (or older, a VTVM) and gives you the ability to measure those sorts of voltages. I've used modern versions made for Fluke meters that go to 40KV. Most divide the measured voltage by 1000. Not something most of us need real often, but handy to have when you do. |
#5
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Ping: Igor - High Voltage
Emailed, thanks a lot
i On 2010-03-01, Monkey Butler wrote: Igor, For some reason it sticks in my mind that you have posted about playing with high voltage in the past. Is this of any use to you: http://www.monkeybutler.com/tmp/DSCF0001.jpg http://www.monkeybutler.com/tmp/DSCF0002.jpg If so it's yours for the shipping. Otherwise I'll offer it to the next person who can use it. I'm a little leary of ebaying something like this. Steve P. |
#6
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Ping: Igor - High Voltage
On 2010-03-01, Al A. wrote:
On 2/28/2010 7:36 PM, Wes wrote: Brain is weak tonight but is that a probe for checking 2nd anode voltage on a tv picture tube? Wes That is one common use for those. That one plugs into a multimeter (or older, a VTVM) and gives you the ability to measure those sorts of voltages. I've used modern versions made for Fluke meters that go to 40KV. Most divide the measured voltage by 1000. Not something most of us need real often, but handy to have when you do. It is also handy when I am not sure what exactly is the voltage. i |
#7
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Ping: Igor - High Voltage
On Sun, 28 Feb 2010 16:03:38 -0800 (PST), Monkey Butler
wrote: Igor, For some reason it sticks in my mind that you have posted about playing with high voltage in the past. Is this of any use to you: http://www.monkeybutler.com/tmp/DSCF0001.jpg http://www.monkeybutler.com/tmp/DSCF0002.jpg If so it's yours for the shipping. Otherwise I'll offer it to the next person who can use it. I'm a little leary of ebaying something like this. Steve P. I could use it for E-field experiments so I can get back to TIG welding with an implanted cardioverter defibrillator in place. |
#8
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Ping: Igor - High Voltage
On Mon, 01 Mar 2010 00:38:07 -0600, Don Foreman
wrote: On Sun, 28 Feb 2010 16:03:38 -0800 (PST), Monkey Butler wrote: Igor, For some reason it sticks in my mind that you have posted about playing with high voltage in the past. Is this of any use to you: http://www.monkeybutler.com/tmp/DSCF0001.jpg http://www.monkeybutler.com/tmp/DSCF0002.jpg If so it's yours for the shipping. Otherwise I'll offer it to the next person who can use it. I'm a little leary of ebaying something like this. Steve P. I could use it for E-field experiments so I can get back to TIG welding with an implanted cardioverter defibrillator in place. Nevermind, upon refresh of RCM I see that Ig glommed it. |
#9
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Ping: Igor - High Voltage
Ignoramus26630 wrote:
On 2010-03-01, Al A. wrote: On 2/28/2010 7:36 PM, Wes wrote: Brain is weak tonight but is that a probe for checking 2nd anode voltage on a tv picture tube? Wes That is one common use for those. That one plugs into a multimeter (or older, a VTVM) and gives you the ability to measure those sorts of voltages. I've used modern versions made for Fluke meters that go to 40KV. Most divide the measured voltage by 1000. Not something most of us need real often, but handy to have when you do. It is also handy when I am not sure what exactly is the voltage. I have a similar tool, mine is an old RCA branded one: http://www.amplifier.cd/Test_Equipme.../rca-wg297.jpg Works great for measuring high voltage, but I prefer to use it "hands off", and just clip an alligator clip to the tip. Jon |
#10
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Igor - High Voltage
High voltage probes are nice to have around. The Beckman HV probe shown is
recommended for a particular series of Beckman DMMs. If there isn't an instruction sheet with it, the info and correct series may be available online (the Repair FAQ, maybe). Some of the Beckman meters (grey 300 and yellow 500 series, I think) had an input impedance of 22Mohms, which is uncommon. The vast majority of DMMs have input impedances of 10Mohms. Some Sencore meters were 15Mohms. A user shouldn't try measuring their vehicle's spark plug voltage with a DMM and HV probe, but instead should use the probe for CRT and various HV test points in electronic gear when the service manual procedures require HV probes. CRT anode 12-30kV, focus 2-8kV, oscilloscope CRT anode 1.2kV, for example. -- WB .......... "Monkey Butler" wrote in message ... Igor, For some reason it sticks in my mind that you have posted about playing with high voltage in the past. Is this of any use to you: http://www.monkeybutler.com/tmp/DSCF0001.jpg http://www.monkeybutler.com/tmp/DSCF0002.jpg If so it's yours for the shipping. Otherwise I'll offer it to the next person who can use it. I'm a little leary of ebaying something like this. Steve P. |
#11
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Igor - High Voltage
On Mar 1, 1:05*pm, "Wild_Bill" wrote:
A user shouldn't try measuring their vehicle's spark plug voltage with a DMM and HV probe, but instead should use the probe for CRT and various HV test points The best way to look at a spark plug voltage is with an oscilloscope on the low-V side of the coil, of course ('low' meaning a few hundred volts). This used to be a standard diagnostic technique. |
#12
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Igor - High Voltage
On Mon, 1 Mar 2010 16:05:41 -0500, "Wild_Bill"
wrote: High voltage probes are nice to have around. The Beckman HV probe shown is recommended for a particular series of Beckman DMMs. If there isn't an instruction sheet with it, the info and correct series may be available online (the Repair FAQ, maybe). Some of the Beckman meters (grey 300 and yellow 500 series, I think) had an input impedance of 22Mohms, which is uncommon. The vast majority of DMMs have input impedances of 10Mohms. Some Sencore meters were 15Mohms. A user shouldn't try measuring their vehicle's spark plug voltage with a DMM and HV probe, but instead should use the probe for CRT and various HV test points in electronic gear when the service manual procedures require HV probes. CRT anode 12-30kV, focus 2-8kV, oscilloscope CRT anode 1.2kV, for example. Bill's point is that the probe will not give correct readings unless used with an instrument having the input impedance for which it was intended. However, that shouldn't impair your ability to sell it on EBay. |
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