Electronics explained in a simple way
Today I got a question from Garry on the Ohmify community.
[GARRY]:
“When I measure the voltage of my 9V battery using my multimeter I get a reading of 9.06 when it is not connected to any circuit. When I hook the battery up to a simple circuit (i.e. 325 Ohm resistor in series with a red LED) and measure the voltage drop across the battery I get a reading of 8.65 V – why the difference?”
Ok, I’ve been away from electronics for too long.
I haven’t been able to get my hands dirty and build circuits for a while.
But last week I sat down to build some circuits for the 555 Timer course.
[Read more…] about The tale of the “damaged” chipIf yes, keep this in mind:
Building a circuit and understanding a circuit are two different skills.
And you can learn one without the other.
As a kid, my dad taught me how the relay works. That helped me understand a simple circuit to blink a light. And we built it together.
[Read more…] about Are you frustrated learning electronics?
How can a bird sit on a power line with thousands of volts and not get electrocuted?
When I was a kid, I learned that it’s because “the current takes the path of least resistance”.
[Read more…] about This common rule is just wrongLast year I was hosting a meetup on designing circuit boards in Oslo.
We designed a cool display using 90 LEDs!
But, one of the first things that happened was this:
Almost everybody got different errors in the software we were using; KiCad.
[Read more…] about Failures are great =)Lately, we’ve been doing something cool inside Ohmify.
Check this out:
It’s a workshop I decided to call Make Your First Printed Circuit Board.
The idea is that the members go through the whole process of designing a simple circuit board:
[Read more…] about The cool thing we’re doing inside Ohmify