| ??? 03/23/06 16:46 Read: times |
#112882 - No CR when closed? Responding to: ???'s previous message |
Erik Malund said:
and zero voltage and zero resistance when closed. Will there not be any voltage drop or resistance get developed accross the contact when it is closed? is that what you meant to say? Erik Malund said:
One characteristic of a switch is the max voltage it can handle (make/break), the other characteristic is how much current it can handle when closed. thus a switch has both a voltage and a current rating Yes. iam familiar with it. But i was asked to measure the CR of the Reed switch by passing 10mA current at 20mV through the contacts. oliver sedlack said:
If you are measuring resistance you can choose the test current or the test voltage, but not both. So, if i choose the test current to be 10mA then, could i pass any voltage (probably within contact rating) through the contact to measure the CR? Steve said:
What is the typical contact resistance ? let me check it out and tell steve. iam not sure about it at present. suresh. |
