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  • DIY High Voltage Probe for Digital Multimeters

    Hello there, I see this thread is quite old, but nevertheless an answer.Firstly, if you do not understand this "instructable", I think it is better not to even think about trying this out. This kind of voltage is not for unexperienced people.Secondly, I believe the design is assuming a 10MΩ voltmeter.taking into account the resistance of a 10MΩ multimeter, the resistance over the contact points would be about 5.26 MΩ and the resistance of the circuit 100MΩ+5.26 MΩ = 105.26 MΩhence, the reading would be 5.26 / 105.26 = 5 % of input voltage, therefore a multiplier of 20 to be applied to the read-out as expected.However, if someone would use a 20KΩ multimeter (the real cheap ones) the resistance over the contact points would be some 19.9 KΩ and therefore the reading would be 19.9...

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    Hello there, I see this thread is quite old, but nevertheless an answer.Firstly, if you do not understand this "instructable", I think it is better not to even think about trying this out. This kind of voltage is not for unexperienced people.Secondly, I believe the design is assuming a 10MΩ voltmeter.taking into account the resistance of a 10MΩ multimeter, the resistance over the contact points would be about 5.26 MΩ and the resistance of the circuit 100MΩ+5.26 MΩ = 105.26 MΩhence, the reading would be 5.26 / 105.26 = 5 % of input voltage, therefore a multiplier of 20 to be applied to the read-out as expected.However, if someone would use a 20KΩ multimeter (the real cheap ones) the resistance over the contact points would be some 19.9 KΩ and therefore the reading would be 19.9 KΩ /100.019 KΩ= 0.0199 % of input voltage what could possibly lead to some misinterpretation of the reading p.e. assuming the circuit is dead, and consequently touching something and getting to know the forces of nature.

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  • 83V0 commented on wordsnwood's instructable Knockdown Cherry Guitar Stand3 months ago
    Knockdown Cherry Guitar Stand

    beautiful design, thanks for sharing.now you got me thinking how to fit 4 electrics and 2 acoustics on an aesthetically pleasing stand. Will post in case I find a solution ;-)

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  • How to Repair a Broken Guitar Neck (headstock)

    @FishPotPete thank you for coming back. Much appreciated.Meanwhile syringe inserted the hot glue and the clean straight forward crack is stable and until now ;-) is permanently closed.Used hide glue as easy cleaning up and also loosening trussrod would have been possible if necessary. Trussrod came loose from glue at first try with a little click, 1/8 turn without excessive force, so suppose the amount of glue and oozing was correct.P.S.If it were a "nice" LP I would have sent it in for repair but this is an Epi traditional pro II (excellent for my level of playing) that, however, was bought in USA and they required me to send it back to US for "worldwide" warranty assessment (Local distributer of no help after consultation with Epi) and, possibly paid, repair. So, s...

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    @FishPotPete thank you for coming back. Much appreciated.Meanwhile syringe inserted the hot glue and the clean straight forward crack is stable and until now ;-) is permanently closed.Used hide glue as easy cleaning up and also loosening trussrod would have been possible if necessary. Trussrod came loose from glue at first try with a little click, 1/8 turn without excessive force, so suppose the amount of glue and oozing was correct.P.S.If it were a "nice" LP I would have sent it in for repair but this is an Epi traditional pro II (excellent for my level of playing) that, however, was bought in USA and they required me to send it back to US for "worldwide" warranty assessment (Local distributer of no help after consultation with Epi) and, possibly paid, repair. So, saved over 200 $ on shipping and spent just a few dollars on glue and proper radius supports for clamping.

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