• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Output Current

Status
Not open for further replies.

codan

New Member
I have a 555 timer circuit that is producing a rectangle wave, how do you test the output current of such a circuit ?


Thanks
 

Sceadwian

Banned
With an oscilloscope, or a true RMS multimeter. I don't know if true RMS meters works on square waves though, would depend on the meter. Alternatively if you know the duty cycle of the wave form and the load you can calculate the current yourself, just multiply the steady state current (force the 555 on to measure this with a meter) and multiply that by the duty cycle.
 
Last edited:

mark_3094

New Member
Could you possibly put the circuit into a simulator (electronics workbench, Spice, etc) and get it to show you the waveform?

It would only be theoretical of course.
 

MikeMl

Well-Known Member
Most Helpful Member
For starters, read the datasheet. It talks about how much current the 555 can "source" and "sink" running on various supply voltages.
 
Status
Not open for further replies.

EE World Online Articles

Loading
Top