ok, i have a few questions that i am completely puzzled by:
im having to explain these questions, but can give links to the actual paper if my explanations suck
1) A zener diode is used in a potential divider to produce a stabilised output voltage of 3.9V, with a 6V input and a 10 ohm resistor. The zener diode must have aminimum current of 10mA through it to function correctly.
The output is over the zener diode.
Calculate the maximum current that can be provided to the output.
I used the traditional potential divider formula Vin+Vout x R2/(R1+R2)
I used the values of 10mA and 3.9V to get the zener diode with a resistance of 17.1ohms, then used I=V/R to get the current flowing through it
They have done it a different way in the answer and my answer is about 10% off theirs
have i done this right??
thanks