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how to use op-amp to measure current?

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pdi33

Tue Sep 02 2008, 12:14PM

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as truely said by exp, the gain (hfe or beta)of a transistor can be only calculated when it is in the active region and not when it is destroyed

.
do check on the datasheet for the transistor u r putting on test and calculate suitable values of the base and collector resistances.

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christie

christie

Wed Sep 03 2008, 08:38AM

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all types of instrumentation amplifier also can be used for amplify the voltage?

pdi33

Wed Sep 03 2008, 12:07PM

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christie wrote ...

all types of instrumentation amplifier also can be used for amplify the voltage?

i think for ur application any instrumentation amplifier would suffice . u could even make one using a quad op-amp general purpose single supply op-amp IC like lm324.

* inspired to develop,developing to inspire *

christie

Thu Sep 04 2008, 09:38AM

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my supervisor require me to add one more DAC. Shall i do it?

pdi33

Thu Sep 04 2008, 11:03AM

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Thanked 185 times in 180 posts

DAC? what for ??

. can u clarify its purpose?

* inspired to develop,developing to inspire *

ExperimenterUK

Thu Sep 04 2008, 02:14PM

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Joined: Tue Aug 05 2008, 04:15PM

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christie wrote ...

my supervisor require me to add one more DAC. Shall i do it?

DAC or ADC ?

Learning all the time

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sir Ajay,can u help me regarding this problem, plzzzz

i need the trraffic light controller code along with comments, so that i can proceed what does it do, after two days i will present my project. plz send me as soon as possible, i'll b very thankful 2 u. i m waiting 4 ur reply.

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hi abhinav, r u a student ?

shazy | 09 Jan : 04:16

for Mr. binu, sir i need the trraffic light controller code along with comments, so that i can proceed what does it do, after two days i will present my project. plz send me as soon as possible, i'll b very thankful 2 u. i m waiting 4 ur reply.

Ajay | 09 Jan : 01:50

thats ok.. i replied to your post. do check it

AbhinavChaurey | 09 Jan : 01:49

i will remember it next time sorry for this time.

Ajay | 09 Jan : 01:41

well there is no limit, but its better to stick to single thread till your problem is different. Like now you have posted in a new thread whereas it could be done in the previous thread only.

AbhinavChaurey | 09 Jan : 01:39

Good night to u all see u tomoro:bye

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