measuring current

[neutrino]

Hi all,

Is there a way of measuring the current that is being output by a flexmod P3 whilst the diode is in place?

Cheers
Rich

[swamidog]

have you tried measuring the input current to the flexmod?

Hi all,

Is there a way of measuring the current that is being output by a flexmod P3 whilst the diode is in place?

Cheers
Rich

[neutrino]

No. I was wanting to find a way of measuring it without disconnecting anything, if possible.

I remember reading somewhere that some drivers had test pads over a resister (1 ohm I think). By measuring the voltage it would give you the current.

Not sure if this is correct or indeed possible on the P3 but figured I'd ask. If not I will have to disconnect the circuit somewhere.

Cheers
Rich

[-bart-]

I remember reading somewhere that some drivers had test pads over a resister (1 ohm I think). By measuring the voltage it would give you the current.

...Well, there is this particular hard-to-miss resistor on the P3...

[-bart-]

In an attempt to be somewhat more helpful...
iirc the value is 0,2 Ohm, therefore multiply voltage by 5 to obtain current.

1mV => 5mA
100mV => 500mA

[neutrino]

Thanks Bart, I will give it a go measuring the voltage across the large black resistor

Cheers
Rich