Re: [volt-nuts] Fall of SRAM voltage in a 3457A without external power

2016-01-25 Thread Andrea Baldoni
On Mon, Jan 25, 2016 at 11:46:19AM +, Dr. David Kirkby (Kirkby Microwave Ltd) wrote: > V). and well above the 2.0 V needed to hold the SRAM contents. Assuming the > SRAM takes a constant current one would expect the voltage to fall linearly > with time. If so, it would take 46 minutes to

[volt-nuts] Fall of SRAM voltage in a 3457A without external power

2016-01-25 Thread Dr. David Kirkby (Kirkby Microwave Ltd)
I decided to try a little experiment on my 3457A, When on mains the SRAM gets 4.8 ~ 5 V. This does not seem to be well regulated, so I assume depends on mains voltage. Once power is removed, the voltage on the SRAM stays well above the battery voltage for some considerable time, which I assume is

Re: [volt-nuts] Fall of SRAM voltage in a 3457A without external power

2016-01-25 Thread Poul-Henning Kamp
In message , "Dr. David Kirkby (Kirkby Microwave Ltd)" writes: >ESD and leakage of the human body would probably make screw this up, so I'm >not suggesting replacing the battery that way if you want to preserve the

Re: [volt-nuts] Fall of SRAM voltage in a 3457A without external power

2016-01-25 Thread Dr. David Kirkby (Kirkby Microwave Ltd)
On 25 January 2016 at 11:50, Poul-Henning Kamp wrote: > > In message < > canx10hcamahhhxqiao9bdzu03c2bbt787mr10rmnywk3oa8...@mail.gmail.com> > , "Dr. David Kirkby (Kirkby Microwave Ltd)" writes: > > >ESD and leakage of the human body would probably make screw this