current sensing circuit

[pona]

Hi, I want to design a circuit which can detect current pulses and give static voltage in accordance with
current passed. For example if a current pulse of 10ms duration passes through my circuit than I want my circuit to give voltage and hold it there. I have tried using sense circuits for dc power supply in which a
sense resistor senses current and an opamp is used to amplify voltage drop across it to a certain value and using capacitor i can hold this value. But i was wondering if there is a special circuit for sensing pulses of current. And is there a method of sensing current which uses a sense resistor but doesnt use an opamp? Any help would be great.

 

[FvM]

If you want to keep sense resistor voltage drop and power dissipation low, you can't avoid some kind of amplifier.

 

[alexan_e]

an alternative solution is to use transistor current mirror

**broken link removed**

Alex