Trace only works at 5V/div

JmU
Posts: 7
Joined: Sun Mar 19, 2017 12:14 pm

Re: Trace only works at 5V/div

Post by JmU »

It seems to be working with a 9V battery.
My power supply (240V AC -> 9V DC) supply approx. 9.8V and ist quite linear (measured with the DSO).

What PS you are recomending?
Where to get this?
jye1
Posts: 1221
Joined: Wed Feb 20, 2013 4:58 pm

Re: Trace only works at 5V/div

Post by jye1 »

Portable linear PS is not common nowadays. Most power supplies you see are switching mode. Just looking for better quality switching mode PS. Most of them are okay for DSO Shell.
JmU
Posts: 7
Joined: Sun Mar 19, 2017 12:14 pm

Re: Trace only works at 5V/div

Post by JmU »

With a 9V battery it works.
What are the boundery conditions for a 240->9V PS?
That one what I am using the noise is quite low, so I don´t understand why it´s not working with this.
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