Whiz Bang Senior

[boB]

I don't like to use zeners, and especially low voltage zener diodes for things like protection because they can be very leaky.  5K Ohms is not real high so it might be acceptable at that low impedance.

You know...  Summing all 4 shunts together only tells you what one bigger shunt does.  It doesn't tell you if all 4 banks are sharing.

boB

[Barry Fields]

You know...  Summing all 4 shunts together only tells you what one bigger shunt does.  It doesn't tell you if all 4 banks are sharing.

boB

Below is attached a method for a monthly evaluation of Bank Health. A total KWH charge data for each bank could be compared and reset monthly. (my previous post)

[Barry Fields]

After reflection, the acceptable limit of voltage drop across the shunt to buss connection should likely be in the area of -100mv. We already accept 50mv to 75mv across the shunt itself. (open to discussion)

U2 enables better trigger resolution of U1 (555 flip flop). R5 & R8 set the trigger point. As is it is approx -100mv.  R5 & R8 should be replaced with a potentiometer for adjustment.