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I have 5v coming in on two resistor going into a transisor.

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Second problem 3 voltages coming into a op amp whats the voltage at the nodes, do I add them? I'm having some problem figuring out these two circuits.

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Homework questions are allowed, but you need to demonstrate some effort. What have you done? Where are you getting stuck? (not 'at the very beginning', if that's the case you need to try some easier problems) What answers have you gotten, and why do you think they're not correct? – Kevin Vermeer Apr 15 '12 at 1:35
The question is perfecyly clear - just not well put. Slower trigger finger is in order on pccasion. I had an answer in preparation and you closed the question and stopped it being posted. It is very unlikely that this is a homework question due to the wierdeness of the circuits and the age of the components used. Appears to be material from a 1970's or 1980s book. Maybe 1960s. Note PNP transistor. OP-7 or OP070 opamp - olde. Note transistor drive is 10 x collector current giving ultra low Vsat. – Russell McMahon Apr 15 '12 at 1:45
@RussellMcMahon, if you dont put an @ and kevinvermeer at the beginning it is not going to notify him. If you are just trying to find 5 that will vote to reopen why have you not voted to reopen? – Kortuk♦ Apr 15 '12 at 4:06
@Kortuk - last time I did it said "closed by a moderator - go away" - I thought that was via Kevin. Maybe not. – Russell McMahon Apr 15 '12 at 5:58
@RussellMcMahon, I think that might happen if it was locked, but no, a moderator close should allow you to vote. I happen to agree with kevin here, this is a very poor quality post. It is two separate book questions with no detail as to what the issue is. – Kortuk♦ Apr 15 '12 at 8:47
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closed as not a real question by Kevin Vermeer Apr 15 '12 at 1:35

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.

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