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diode circuit diagrams
by acc98 Leaving Cert Physics — 29/05/16 4

when you are asked to draw a circuit diagram with a diode why is there usually resistor drawn before it, this is seen in 2011 Q11 part (g)

keenan1 — 29/05/16
so the resistor doesnt blow/break,resistor limits the amount of current and diodes only need a tiny bit on current
acc98 — 29/05/16
oh right okay, would you ever be asked what value resistor to put before a certain diode given the junction voltage of the diode? i assume not, i haven't heard of a Q like that before thank you!
Michael McSweeney — 29/05/16
Not in a Physics questions, that's more relevant in technology
acc98 — 29/05/16
great, thanks so much!!
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