[SATLUG] OT: Replacing a power adapter

scs at worldlinkisp.com scs at worldlinkisp.com
Sat Feb 19 08:00:47 CST 2011


>------- Original Message -------
>make sure that the pin polarity is the same
-----------------------------------------------

Am sure the Scanner has a diode in series to preclude this and the unit would not work if reversed, as well as a built-in 
regulator. Power adapters have notoriously wide output voltage range depending on load.  

Example, you car radio, consider the wide input variations and transient spikes on Vcc. 

As mentioned, the current rating should be close to or greater than the original adapter.

Lou



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