>>The problem with using any type of transformerless power supply in a device
>>is that ANY electrical connection (intentional or unintentional) between
>>that device and anything that's ground- or mains-relative (or between that
>>device and any other device with an intentional or unintentional connection,
>>etc...) poses a severe risk of blowing up one or both devices.

I am confused by this. Aren't PC power supplies transformerless?
Why aren't they dangerous?

--
Best regards,
Andy Burgess
aab@cichlid.com