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Registered Member #1232
Joined: Wed Jan 16 2008, 10:53PM
Location: Doon tha Toon!
Posts: 881
I would recommend a good quality digital storage scope from either Tektronix or Agilent if you are serious about power electronics. You can buy isolation amplifiers for measuring high voltages etc, but a couple of x10 probes is a good starting point for voltages up to a couple of hundred volts.
Registered Member #1083
Joined: Mon Oct 29 2007, 06:16PM
Location: Upland, California
Posts: 256
Are there any idiot-proof scopes out there? I have a tendency to make stupid mistakes. My first $10 DMM got fried when I tried to measure 400v while still set to measure resistance Then again, it was a long time ago, and I'm much more careful now, but it would still be nice to have a scope that will survive mistakes.
Registered Member #1537
Joined: Thu Jun 12 2008, 06:44PM
Location:
Posts: 51
i'm tempted to get an oscope on ebay the cheapest ones are the ones that plug into the computer (no screen of thier own) are these good for hv applications and general oscoping?
Registered Member #1381
Joined: Fri Mar 07 2008, 05:24PM
Location: Hungary
Posts: 74
Andyman wrote ...
Are there any idiot-proof scopes out there?
Not really ... scopes are not meant for all the people :P
Also better get x10 , x100 or better yet get some HV probes (there are some up till dc 20kv probes with dielectric fluids , kinda of an overkill, but with these you wont be blowing out the channels :P) Normaly it's not the best idea to "measure" more then 40-50V with the scope ,cause you can't even measure more with 5V/div max, so be sure to use appropriate attenuators, (like 30-50 dB fixed/variable attenuators)
Registered Member #27
Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058
i'm tempted to get an oscope on ebay the cheapest ones are the ones that plug into the computer (no screen of thier own) are these good for hv applications and general oscoping?
No, too slow and if something bad happens your PC goes up in smoke at the same time.
If you don't need storage then get a cheap analog one, it will have a much better user interface and be sturdy.
Registered Member #989
Joined: Sat Sept 08 2007, 02:15AM
Location: São Paulo, Brazil
Posts: 476
I made one SSTC without a scope, now its working very good, but it was eat much fets. I plan to make a DRSSTC and some other things, but I will buy first a scope to not kill many fets this time.
Registered Member #1287
Joined: Mon Feb 04 2008, 11:03AM
Location:
Posts: 15
Do you think I would get by with something like;
At last an economical and easily transportable Oscilloscope with bandwidth of up to 10MHz and sensitivity of 5mVâ„DIV to 5Vâ„DIV. Easy to operate, it is an ideal scientific and engineering instrument for a wide range of uses including hobby and education. Supplied with a 1:1 & 10:1 switchable CRO probe and detailed Instruction manual.
Features:
* Specifications:
* Display Area: 8 x 10 DIV (1 DIV = 6mm)
* CRT Accelerating Voltage: 1.2kV
* Display colour: Aqua
* Vertical Sensitivity: 5mV - 5Vâ„DIV
* Rise Time: Approximately 35ns
* Bandwidth (-3dB): DC: 0 - 10MHz, AC: 10Hz - 10MHz
* Sweep Speed: 0.1sâ„DIV - 0.1uSâ„DIV
* Trigger Sensitivity: Internal 1 DIV, Ext 0.3V
* Trigger Sources: Internal, Line, External
* Trigger Max. Input Voltage: 400V peak
* Trigger Mode: Normal, Auto, TV
* X-Y Mode Sensitivity: 0.2Vâ„DIV - 0.5Vâ„DIV
* Size: 85 x 215 x 278mm (HxWxD)
* Weight: approx 3kg
* Power source: 220-240V AC, 50Hz
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Getting by without an O-Scope
