Recent content by bhs67

Good point! At my last project, inadvertently blowing up an oil refinery was not an option! The 0201 resistor is a tiny size. They may make them smaller now. A lightning strike can create a voltage pulse, that can misdirect the micro firmware, which could misdirect the micro output. When...

I've used lots of MSP430's. I never realized they have internal pull-up / pull-down resistors. I never used them (I used SPI for communication). When a FET is connected to a micro output pin, I always put a pull-up on the gate of a P Channel FET and a pull-down on the gate of an N Channel...

Thinking more about this, when pull-ups and pull-downs are attached to the electronics, they are active immediately when power is applied. Waiting for a micro to enable them is too late.

I've designed electronics and written code for microprocessors and microcontroller for more than 40 years (Texas Instruments, 3M, Emerson). I'm curious, which microcontroller has internal pull-ups and pull-downs? Thanks!

I'm not aware of any pull-up resistors and pull-down resistors inside a microcontroller. Pull-up resistors and pull-down resistors are attached as part of the electronic hardware design. There are no switches to enable / disable them (switches would add cost and consume real estate). See for...

This link https://NDAcademy.FoxPing.com/ => Electronics is Easy? => 5.1 Digital Component Basics --- and 3.5 FETs (Field Effect Transistors) --- describe the role of pull-up and pull-down resistors.

Ok, I found the EE forum. Is there a way to change the title of my posts? "Retired" provides no useful info. Thanks!

I do not see an EE forum at https://www.physicsforums.com/. Where is it?

Everything is important! In addition, a "thorough" understanding of the basics helps with the understanding of more advanced components / technology!

A lot of what you mention is in the various video clips, including PCB layout. There are about 90 video clips!

Thanks for the kind words! This website https://NDAcademy.FoxPing.com/ provides a link to the electronics video clips. They will give you a distinct advantage!

I understand. Yes, there will be different harmonics. However, what harmonics / amplitudes make a trumpet sound like a trumpet, and a flute sound like a flute?

tech99, what do you recommend? Thanks!

A trumpet playing 440 Hz sounds different than a flute playing 440 Hz. They sound different because they generate different harmonic amplitudes. To analyze, I am using MuseScore to create the trumpet sound and the flute sound. Unfortunately, those instruments have vibrato which adds...

A good example of theory can be found at http://www.site.uottawa.ca/mathasatool/01unit/12topic/focus/voltage_current/p09.htm. These are equations that are never used in industry. Industry needs people who understand capacitors: 1) The voltage ratings must always be twice the applied voltage...