15mA is the limit in my brain. Im sure someone will chime in with a different number but its around here.
The thing to remember is the output impedance. You can have 1000's of volts at a node, but its sourced by a VERY high impedance output. so when you touch it with your hands (which is like 100kohm on a dry day), the voltage collapses because of the voltage divider your hand created.
But if the output impedance is low (transmission lines), well its game over.
The thing to remember is the output impedance. You can have 1000's of volts at a node, but its sourced by a VERY high impedance output. so when you touch it with your hands (which is like 100kohm on a dry day), the voltage collapses because of the voltage divider your hand created.
But if the output impedance is low (transmission lines), well its game over.