Posted by: Mikerascally ® 03/07/2007, 14:25:08 Author Profile eMail author Edit

Hi, I am trying to find the current of a system with the following specs: Voltage output: 100 volts Energy Output: 4 joules per line (two lines available) Impedance: under 1 Ohms What I have is basically a hand held windup generator with a postive line and negative line. After winding, you push the button and you get a pulsed current down the line (pulse is about 1/2 sec.). How can I calculate the current based on this info? Is it possible? And I cannot measure it since I do not have the apparatus.

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Re: How to calculate the current with limited info!?
Re: How to calculate the current with limited info!? -- Mikerascally	Post Reply	Top of thread	Forum

Posted by: Bruiser ® 03/08/2007, 00:02:56 Author Profile eMail author Edit

Wow - you can measure Joules but not Amps! Using the fact that 1 Watt = 1 J/s, and I = Watts/Volts, W = 4J/0.5s = 8W I = 8/100 = 80mA Note that this is average current - depending on the dynamics of your machine, it is likely to be higher at the start, zero at the end.

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