DIY 10:1 (x10) Oscilloscope Probe

A couple of resistors, a bit of coax cable, and bang! You have a 10:1 oscilloscope probe. This isn't about precision (it's about 90% accurate), this is more about protecting your oscilloscope's input amplifier and not blowing the crap out of it by exceeding the input voltage (especially when testing power amplifier output). Even though a probe can be bought online for around $20, where's the fun in that?
Link to the original article: cromwell-intl....
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[@englishrupe01]

Great exploration, Astro, thanks. Good to see you back on the way up again after you gave up your other channel. All the best, mate.

[@yveslegault6825]

There is a need for a 50 ohm termination resistor somewhere, generally at the scope input, so that the coax bandwidth does not affect the signal. A 450 ohms at the other end of the coax would provide a 10X ratio with a DC impedance of 500 ohms.
There is a need to know the RG number of the coax so as to evaluate what capacitance is generated with a 1 meter long piece of that coax. That will allow calculating the bandwiddth of the probe.

[@13yearsaprepperr.jtilbury.51]

i use RG6 on my probes
Rob
NSW
Australia

[@onesikm3]

These cheap oscope need a few resets to sometimes output the correct voltage I’ve ran into this issue before too checking the voltage of a Aa battery for instance

[@picanazo420]

bom bom bom bom brrrr

[@AstrosElectronicsLab]

Intelligent

[@user-ks1kq5se2o]

Excellent video. Please get a good manicure-Finger nails needs help. God luck

[@AstrosElectronicsLab]

Thank you, however my finger nails are not your concern.