I'd like to ask OMNI a question (if he's still alive). He wrote his answer in 2007 and I'm asking in 2021. Anyway Omni, you recommend using a GFCI for safety. Then, you also recommend having a Variac and an isolation transformer. I understand having a Variac. When powering up an unknown condition piece of electronics like an old Tektronix oscilloscope it would be best to slowly raise the input voltage slowly in case there was a bad short in the scope. But I've been reading pros and cons about using an isolation transformer especially if the device under test and the test equipment are al
I'd like to ask OMNI a question (if he's still alive). He wrote his answer in 2007 and I'm asking in 2021. Anyway Omni, you recommend using a GFCI for safety. Then, you also recommend having a Variac and an isolation transformer. I understand having a Variac. When powering up an unknown condition piece of electronics like an old Tektronix oscilloscope it would be best to slowly raise the input voltage slowly in case there was a bad short in the scope. But I've been reading pros and cons about using an isolation transformer especially if the device under test and the test equipment are al