DIY Emergency Resistor - an Electronic Circuit Component
Intro: DIY Emergency Resistor - an Electronic Circuit Component
Your in a cabin in the woods, your circuit is due tomorrow and the parts store is closed. You need is a few resistors now!
STEP 1: Gather the Materials
To make resistors you need a volt-ohm meter, some paper clips, slips of paper and a graphite pencil. I prefer a No. 2 pencil as a No. 1 is harder to find in an emergency.
STEP 2: Scribble Resistance
Applying steady pressure scribble a smudge with no line breaks on a piece of paper. The graphite in a No. 2 pencil has electrical properties. More familiar circuit resistors are made from carefully calibrated graphite wrapped in non conductive shell with connecting leads protruding. Read http://en.wikipedia.org/wiki/Resistor
STEP 3: Add the Paper Clips
Push two paper clips onto the paper so the metal of each clip is touching the graphite smudge.
STEP 4: Measure the Resistor
Attach the leads of the volt-ohm meter to the paper clips and measure the resistor value. Move the paper clips closer together to decrease the resistor value.
Beware (mild): Don't let your fingers touch the leads when you are measuring the resistance. Your human contact to the leads with body resistance will distort the meter reading.
Beware (medium): Don't let the paper clips touch. If the paper clips touch there is an electrical 'short' as there is no resistance and your circuit might get damaged.
BEWARE (HIGH): This is LOW VOLTAGE SOLUTION - - do NOT use this in high voltage circuits.
The results of this DIY resistor vary enormously - - you did it yourself!
Enjoy.
Beware (mild): Don't let your fingers touch the leads when you are measuring the resistance. Your human contact to the leads with body resistance will distort the meter reading.
Beware (medium): Don't let the paper clips touch. If the paper clips touch there is an electrical 'short' as there is no resistance and your circuit might get damaged.
BEWARE (HIGH): This is LOW VOLTAGE SOLUTION - - do NOT use this in high voltage circuits.
The results of this DIY resistor vary enormously - - you did it yourself!
Enjoy.
12 Comments
ashokguru61 7 years ago
Matthew Yang 1 year ago
TitusR4 4 years ago
Zalam abayomi 4 years ago
billbillt 10 years ago
shannonlove 11 years ago
"No problem, I just need a pencil, a piece of paper and two paper clips."
Sassah122 11 years ago
Sassah122 11 years ago
MikB 11 years ago
ilpug 11 years ago
rimar2000 11 years ago
artworker 11 years ago