EEVblog Electronics Community Forum
Electronics => Projects, Designs, and Technical Stuff => Topic started by: ball on July 03, 2016, 08:16:58 am
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Hi. I'm usually on the road and was wondering if anyone ran their Rigol off a DC power supply, presumably via a DC-DC converter. I haven't purchased one yet due to this issue and as a result have been considering one of those portable or USB-based samplers (yeah, I know, boo hiss, but they don't require AC!)
Inverters, especially pure sine wave, are inefficient and expensive.
Thanks
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Have a look here; https://www.eevblog.com/forum/testgear/battery-pack-for-rigol-ds1054z/ (https://www.eevblog.com/forum/testgear/battery-pack-for-rigol-ds1054z/)
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Maybe an Owon SDS would be easier to hack
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I modified my Instek 1062A to run on a 3s8p pack made from old laptop batteries. It takes quite a few DC/DC converters to get all the voltages needed. There's a lot of empty room in the case so it wasn't very difficult to fit everything in.
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I have run my DS2072 of a 12v-240vac 50Hz inverter that gives a rectangular output voltage, then fed it into a bridge rectifier before it reaches the scope. The bridge was so the inverter doesn't see the X caps across the mains inside the scope PSU. So it is effectively running on 340vdc. Does generate a certain amount of nose but I was using it in a high noise environment anyway - probing the electrics of an old bus while we were driving down the road.
The point being the scope runs fine on straight 340vdc or whatever corresponds to peak AC voltage in your country.
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Just remember if you run a DSO meant for AC power off an isolated inverter or a battery pack that you are floating the DSO and all the issues that entail.
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Of course line triggering no longer works...
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head up for my Battery Powered PSU for Portable Rigol DS1000E/Z (https://www.eevblog.com/forum/projects/battery-powered-psu-for-portable-rigol-ds1000ez/msg4000525/#msg4000525) to thread followers, cheers.