On 1/17/2016 9:37 AM, bob_villain wrote:

So, a diode in the bell unit in a traditionally wired circuit
can only *discard* half of the electricity presented to it.
If the (non-diode) button is "open" (not pressed), then there
is no electricity to discard; no electricity to operate!

Does she really need a back-story on ding-dongs...even if it *is* coming from an "expert ding-dong"? WTF man!


No, she does not. I, however, found it to be an excellent explanation
of why it is needed. I learned something today.

Thank you Don, for taking the time.