Richardcavell
Member
Hi, gang. I'm working my way through Simple Circuits Volume I from Jaycar in Australia. Here's a schematic. I've built the circuit. May I ask a few questions about this circuit:
1. What is the purpose of the 100k Ohm resistor?
2. Why is the transistor in this circuit at all? Why don't you put the probes between the flashing LED and its 470 Ohm resistor, for example?
3. What is the relationship between the Emitter->Base current and Emitter->Collector current? Is there some sort of graph that will document it?
Richard
1. What is the purpose of the 100k Ohm resistor?
2. Why is the transistor in this circuit at all? Why don't you put the probes between the flashing LED and its 470 Ohm resistor, for example?
3. What is the relationship between the Emitter->Base current and Emitter->Collector current? Is there some sort of graph that will document it?
Richard