Recent content by amit016

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    Why mobile devices use same pins for charging and for pwr transferring

    Mobile battery has generally 3 pins, 3rd for safety and 2 pins for supply. How can mobile devices get electricity during charging from same pins from where it is transferring power to mobile circuit? Please help
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    Could you me what this transformer is doing in dc circuit?

    thanks guys, for your time. I appreciate that.
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    Could you me what this transformer is doing in dc circuit?

    Thermoelectric generator induce DC current and I just wants to understand how can a transformer step up DC. If there is something else please make me clear.
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    Can differential op amps operate without any supply?

    Thanks everyone for their precious time and making me more aware about op amps. DC TO DC converters will work for me. good day
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    Can differential op amps operate without any supply?

    MrSparkle: I understand, but its fully differential op amp or a simple demonstration of op amps? I should make you people clear,,, I need to amplify millivolt (20 n more) to 5 volts but i don't want to go for any comparator op amps which requires Vs or supply. So i wanted to know ,,, does a...
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    Can differential op amps operate without any supply?

    Averagesupernova : Supply means Vs other than input voltage. I want to amplify difference of input voltages that was the reason i had gone for differential op amp. I don't want to feed any supply voltage to it.
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    Can differential op amps operate without any supply?

    Simon Bridge: No, that is the reason I am asking you people it is practically possible or not ?
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    Can differential op amps operate without any supply?

    Just want to amplify the difference of inputs.
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