RE: [BCD396XT] Re: Fried It I think
- At 06:19 AM 10/10/2012, you wrote:
>I'm guessing the problem isn't with the grounding of the speaker but moreIf the audio output stage uses a bridged output stage (a common way
>likely something else since the message comes up saying the voltage is too
>high (or too low?). Grounding everything together is typically not a bad
>idea but grounding a speaker wire is typically not done on purpose.
to increase output power on a limited DC supply voltage), then
connecting one side of the speaker to ground will put one of the
halves of the audio amp across the DC supply, putting stress on that
output transistor and any voltage regulators in circuit. Another
potential issue is if voltage regulation takes place on the negative
side of the supply. In this case, you'd short out the regulator
and expose the radio to overvoltage.
73 de VK3JED / VK3IRL
- --- In BCD396XT@yahoogroups.com, Lance <milcom_chaser@...> wrote:
>"Illegal voltage" will also be displayed if the voltage is too low (I think it appears around 5.0 V, it happens a lot when I power from an external battery that has run low.)
> Can you power the radio up on Alkaline Batteries, no external power source?
> Illegal Voltage means the source voltage your using is too high...