Check out this simple tip that Michael sent me:
MICHAEL: “I was making a small practice audio amplifier, and was in need of a 2.5 Ohm resistor. I didn’t
have one, and didn’t want to wait for an order to be fulfilled.
If resistors are made of carbon, and variable resistors have a carbon raceway; then perhaps, I could make one. I wrapped each end of a segment of pencil lead with wire, soldered the wires in place, adjusting the distance between the wires until I got the value I needed. How’s that for a quick fix?”
OYVIND: Great tip. Easy and simple. And it makes the resistor less of a mystery. Thanks for sharing!
Keep on Soldering!
Oyvind
PS! Want to learn electronics from scratch? Want to get started building some cool projects with blinking lights and sound? Check out my eBook “Getting Started With Electronics”:
https://www.build-electronic-circuits.com/products/ebook-2nd-edition
Roger Schmitt says
September 2, 2015 at 6:01 pmIf you can find a wire wound resistor, take it apart and use an ohm meter to determine the correct length (ohms) for the project
Ezea Sunday says
February 18, 2017 at 8:17 pmPlease sir, i want to start designing electronic devices, integrated circuits. Can you teach me?
admin says
February 20, 2017 at 4:31 amHi Ezea,
Here’s a place to start;
http://www.build-electronic-circuits.com/how-to-learn-electronics/
Best,
Oyvind
bekir says
October 23, 2018 at 11:24 amWhich one should I use isolate wire or normal wire
admin says
October 24, 2018 at 9:05 amThe side you connect to the carbon must be without isolation so that there is a connection.