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16th March 2008, 06:41 PM
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#1 |
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diyAudio Member
Join Date: Jan 2004
Location: KC Metro
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Oscilloscope Probes for Tube Work
I have just purchased an old Tektronix 465B and need to get a suitable set of probes for working with tube gear.
In Building Valve Amplifiers, Morgan Jones writes: "Typical X10 probes can only withstand < 200V, and the HT at the power amplifier output stage is likely to be >300V. In addition to your X10 probes, you will also need an X100 probe that is rated for high voltages." Having picked up some probes rated "<600VDC + Peak AC", I thought I was pretty well covered for anything with a B+ of 500V or less (giving myself a 20% margin of error). Am I missing something? Cheers...TG |
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16th March 2008, 10:31 PM
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#2 |
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работник
diyAudio Member
Join Date: Jul 2004
Location: Warwickshire UK
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I think you'll be fine, if the probes actually have a rating on them. The cheap ones I have here have nothing specified (didn't stop me from using them of 450V)!
Assume the 465 has the usual 400V input rating itself... |
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18th March 2008, 10:20 PM
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#3 | |
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diyAudio Moderator
Join Date: Jan 2003
Location: Near London. UK
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Re: Oscilloscope Probes for Tube Work
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