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How to find a maximum current flowing in a circuit?

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foxhenry

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maximum current

hi, how to find a maximum current flowing in a circuit? thanks..
 

Re: maximum current

foxhenry said:
hi, how to find a maximum current flowing in a circuit? thanks..
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Just connect the circuit to the required power supply with an ammeter in series and read the current consumption..Thaz simple.
 

maximum current

place ammeter in series to find current or else if know its resistance than place a voltmeter in parallel then apply ohm's law to find current
 

Re: maximum current

the circuit is drive by a 12mhz crystal + one ic + some caps and resistors.. any formula for these? don't have an ammeter... thanks.... :)
 

maximum current

it may depend on ur IC specifications and also impedance values of ur ckt
 

maximum current

in a oscillator driven circuit, max current is usually going to occur when sum of load impedance's is at a minimum and maximum current will flow. This is USUALLY when the maximum number of driven outputs change, if they all have the same load, especially if capacitors are involved. The frequency these outputs change will also be a factor.

We'd need to see the circuit and values to give a clearer answer.
 

Re: maximum current

foxhenry said:
the circuit is drive by a 12mhz crystal + one ic + some caps and resistors.. any formula for these? don't have an ammeter... thanks.... :)
Click to expand...
For the components you have mentioned, a simple multimeter with 250Ma range is sufficient for measuring current of this circuit. Good luck.
 

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