Ah...more info and indicative of "load dumping" circular cycle...never ending until both the battery and alternator (or more components, as they take out lots and lots of components in that food chain) are replaced with new or 'good' rebuilt
Know folks don't know...nor believe of 'load dumping'...so do a search for believable info
Here are a few found in seconds
Wikipedia...classic definition, mainly automotiveJust a basic info site on how an alternator worksNote that semiconductors do NOT like, nor survive for long seeing voltage spikes (load dumps). Typically filtered with R/C circuits, but some employ MOV's (and they are painted cherry bomb red for a reason)
Info on what "load dumping" isOne automotive "load dumping" circuitBut...the best solution is to have your electronics savvy mechanic do the diagnosis and work. Bottom line is that, IMHO, the battery, alternator and regulator are toast and needs replacement "at the same time"...
Your on-board computers 'should' have protection built into their power circuits to avoid the voltage spikes load dumping generates...but only up to a point before they are compromised. One condition that will compromise them is too many voltage spikes along with too high a voltage attained
Good luck