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Electronic Schematics (alt.binaries.schematics.electronic) A place to show and share your electronics schematic drawings. |
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Hi all,
I'd like to see a thread on hints and tips you have picked up or devised while developing circuits. I'll give you one to start; While involved in the development of a couple of class E amplifier products the collector voltages peaked at over 600 volts The scope was only capable of displaying 400 volts. I put an attenuator together that made the probe a X20 probe, while still keeping the HF response. Parts used; BNC T BNC to F connector adapter F connector 920k Resistor 100 pf capacitor Heat shrink Brass shim stock to make a cover I'm sure other parts could be used, these are what I had available. See the attached drawing for more details. The resistor and capacitor values may need some adjustment for you probe. I used the internal calibrator and adjusted R and C values until I had a sharp square wave and the proper voltage reading I made a shield from brass that corrected some ringing (ISTR). I do recall the shield was important. Be sure to insulated the lead that passes through the F connector. Yes, I know the probe cable has a limit to the voltage before it arcs. Yes, the internal probe components have disipation limits. I never found these limits to be a problem. Let's see some more Hints and Tips. Mike |
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