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Electronics => Projects, Designs, and Technical Stuff => Topic started by: ball on July 03, 2016, 08:16:58 am

Title: Run a Rigol off a 12v DC power supply?
Post by: ball on July 03, 2016, 08:16:58 am
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
Title: Re: Run a Rigol off a 12v DC power supply?
Post by: cs.dk on July 03, 2016, 08:30:10 am
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/)
Title: Re: Run a Rigol off a 12v DC power supply?
Post by: ball on July 03, 2016, 08:41:54 am
Maybe an Owon SDS would be easier to hack
Title: Re: Run a Rigol off a 12v DC power supply?
Post by: NiHaoMike on July 03, 2016, 03:30:06 pm
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.
Title: Re: Run a Rigol off a 12v DC power supply?
Post by: Circlotron on July 04, 2016, 12:04:32 am
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.
Title: Re: Run a Rigol off a 12v DC power supply?
Post by: saturation on July 07, 2016, 02:35:32 pm
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.
Title: Re: Run a Rigol off a 12v DC power supply?
Post by: SteveyG on July 08, 2016, 01:20:53 pm
Of course line triggering no longer works...