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e12 and heatsinks for Q1 & Q2 requirement

post #1 of 4
11/3/09 at 8:13pm
Thread Starter 
So I forgot to order heatsinks for Q1 & Q2, however after reading the note on AMB about them not sure if my application requires it or not. I am using the e12 with an M3 that is powered by a sigma11 of 24V. Now AMB site says if your " if supply voltage > ±18V". How does this translate to a single rail supply with a virtual ground?

If I need them I could probably just grab some thin AL and make my own, but would rather not if they are not needed.
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post #2 of 4
11/3/09 at 9:26pm
I've never needed them. In your application, it is analogous to ±12V. I think when Amb states ±18V, that would be equivalent to 36V in your case.
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post #3 of 4
11/3/09 at 9:32pm
Thread Starter 
Quote:
Originally Posted by Pars View Post
I've never needed them. In your application, it is analogous to ±12V. I think when Amb states ±18V, that would be equivalent to 36V in your case.
That is what I am thinking, just wanted to double check before applying power.
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post #4 of 4
11/3/09 at 11:32pm
Pars is right.
Also, if the Q1 and Q2 transistors are getting uncomfortably hot, then add heatsinks. Otherwise, don't bother.
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