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| Active Probe recommendation? |
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| Helix70:
--- Quote from: tautech on September 02, 2022, 09:24:21 pm --- --- Quote from: IDEngineer on September 02, 2022, 09:11:01 pm ---That's a very interesting idea. I might have those parts just lying around. Looks like a Jim Williams schematic...? --- End quote --- It's not. Tek Oscilloscope Probe Circuits, a booklet or PDF everyone should have: https://w140.com/tekwiki/images/6/62/062-1146-00.pdf --- End quote --- That circuit is not in the link you posted?? |
| tautech:
--- Quote from: Helix70 on September 03, 2022, 01:29:46 am --- --- Quote from: tautech on September 02, 2022, 09:24:21 pm --- --- Quote from: IDEngineer on September 02, 2022, 09:11:01 pm ---That's a very interesting idea. I might have those parts just lying around. Looks like a Jim Williams schematic...? --- End quote --- It's not. Tek Oscilloscope Probe Circuits, a booklet or PDF everyone should have: https://w140.com/tekwiki/images/6/62/062-1146-00.pdf --- End quote --- That circuit is not in the link you posted?? --- End quote --- Yes I may have fucked up as I did think it was from the Tek probe book. Maybe it is a JW design after all. |
| David Hess:
--- Quote from: IDEngineer on September 02, 2022, 09:11:01 pm ---That's a very interesting idea. I might have those parts just lying around. Looks like a Jim Williams schematic...? --- End quote --- Close, it is from Troubleshooting Analog Circuits by Robert Pease who was the staff scientist at National Semiconductor. |
| IDEngineer:
Oh, I definitely know Pease. His articles were incredibly educational, just like those from Williams, though IMHO Pease could wander off onto tangents about his travels and other non-technical topics a bit too often for my tastes. I keep PDF's of articles from both on my cellphone for "casual reading" when on airplanes and such. |
| jonpaul:
Bonjour Active probes are easy to damage, and hard to fix. With 50 Ohm I out scope get a Zo passive probe, eg P6156 https://w140.com/tekwiki/wiki/P6156 See the Tektronix Circuits Concept book Oscilloscope Probe Circuits Zo Make one for free, BNC, 50 Ohm cable, 450 Ohm series R for 10x Jon |
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