Continue to Site

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.

  • 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.

Car LED rear light circuit bulbs

Status
Not open for further replies.
Another note to complicate things even more. Measuring current "disturbs" the circuit. If your lucky, you shoud find a spec of maximum voltage burden. If it was 0.2V on the 200 mA scale, that would translate into a R=0.2/200mA or a 1 ohm resistor.

There are such things called a "feedback ammeter" which might have a voltage burden of a few mV. These are USUALLY reserved for low currents <10 mA.

A "decent" DMM will fuse the low current ranges. You might have a high current range that isn't fused (e.g. Fluke 77). The test time may also be required to be limited.
 
Well that's those ordered! RS components have a trade counter 1/2 a mile away... Be here in a coupe of days.. Free clock and collect so £4.72 + vat
Happy days
 
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top