Electronics > Beginners
Do it yourself 50 ohm BNC to alligator clip cable for function generator
robsims:
Many thanks for you're help Tautech and thm_w. I'm going to make the cable right away.
radiolistener:
alligator clips will be unusable for frequencies more than 1-2 MHz. High frequency should be delivered through transmission line with constant impedance. Coax line has constant impedance and it can be used, BNC connector also can be used. But usual wires with alligators cannot have constant impedance it will leads to random reflections, interference and radiation loss. You can use it with no issues for DC voltage or at frequencies below 100 kHz.
You can buy such cable on aliexpress: https://www.aliexpress.com/item/32816571566.html
It's price is just 1-2 usd.
if you decide to build your own cable, then try to make wires from coax cable to alligators as short as possible, it will reduce negative effect on high frequency.
MarkF:
F.Y.I.
You might like a BNC to Minigrabber Test Lead instead of the alligator clips.
Or one of each: BNC Test Leads Set
robsims:
My scope has 2 cables, for the two outputs. Can i use one of the scope cables, because i think the scope cables are of higher quality? If not, than i will make the cable for the function generator myself. I will use the 50 ohm coax cable, with the BNC connector. I will make sure the cables to the alligator clips will be short.
robsims:
One thing i still don't understand is the 50 ohm. What do they mean by 50 ohm on the coax cable. The resistance of the cables is not 50 ohms. I read on the net that it is for better transfer of electronic signals.
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