Ralph, this is perhaps your best video yet and it is SO important for all to learn. I can relate the following: For a brief time, I taught electronics and my students had no concept of "expectations". This was sadly due to their earlier years in science and math classes. They were taught to be exact to 3 or 4 decimal places, yet nearly all of them forgot to label the value of watts, volts, amps, ohms, etc. Teaching them to put the calculator down and learn to "guestimate" the answer first and then compute the problem was initially a very hard sell, but once they got the concept their final answers improved by magnitudes that were beyond my expectations. Keep up the outstanding work you do! We are blessed to have you as a mentor. 73
Thank you so very much! I remember discouragement kicking in when reality didn't exactly match calculation. It didn't take long to realize that it actually never will, but I can get close. 🙂 ... relatively speaking.
Yes, yes! It used to be that 1% resistors were cost prohibitive. That hasn't been the case for a lot of years, though. I almost exclusively use 1%,metal film resistors (leaded) or thin/thick film surface mount. I do leaded on the bench (breadboard) then, if I do make a circuit board, I go with surface mount. I have literally built hundreds of surface mount boards over the years. The joys of being the product design EE and the technician and the manufacturing engineer and the test engineer all rolled into one!🙂
Yes, I wore different hats when I was working as well. I have started looking at other video's. They are very well put together and presented for a layman to understand ( no knowledge of electronics ).
@@rtybn2012This is where my channel started with things like "Understanding Voltage", "Understanding Current", "Understanding Resistance", Ohm's Law, Kirchhoff's Voltage and Current Laws, Thevenin's and Norton's Theorem and so on. (maybe I should refactor some of these earlier videos and re-release them???). This series here begins with understanding how diodes and BJT transistors work on a basic level. Getting into the middle or late into a series such as this, I *have* to assume that folks have some background at least from the videos leading up to this one. At the same time I also try to assume that someone is, in fact, jumping into the middle of the series to view a video of interest to them. It's a tough balance to keep. That is why I am constantly pointing people back to other videos if the concepts are foreign to them. So, it is all there somewhere in the multitude of videos I have produced. 🙂 What makes my videos different (in my opinion) is that I try to answer the questions that naturally come up to an inquisitive experimenter, but are nearly never/rarely answered elsewhere. This has been my own frustration in relearning things. It amazes me how many, many places I have to go sometimes to piece together the whole story. I really try to bring it altogether in one place. You are right, there are TONS of videos out there, all with their piece of the puzzle.🙂
This is great, actually all of your videos are. Ralph, I wanted to ask what advice would you give to a new ham who is interested in learning to build linear amplifiers, specifically ones with 3-500z's. Any assistance is greatly appreciated. 73's KJ5CRY
My first advice when working vacuum tube of any flavor ... respect the high voltage! Then with tubes like these high power linears ... doubly-respect the high voltage. I've been seriously nuked because I got careless ... and it is soooooo easy to forget and get your hands in the wrong places and REALLY wish you hadn't!
@@RL-521 If it were me looking to work with vacuum tubes at this point, I'd be going back to my OLD Radio Amateur's Handbook (ARRL). They deal with tubes in much more detail than the new ones and are more oriented toward home brewing. I have a 1956 and a 1939 Handbook. Beyond this, I've been out of the vacuum tube loop so long, I'm not sure where I'd go for more modern texts on the subject. Sorry I cannot be more help. 😞
Ralph, this is perhaps your best video yet and it is SO important for all to learn. I can relate the following: For a brief time, I taught electronics and my students had no concept of "expectations". This was sadly due to their earlier years in science and math classes. They were taught to be exact to 3 or 4 decimal places, yet nearly all of them forgot to label the value of watts, volts, amps, ohms, etc. Teaching them to put the calculator down and learn to "guestimate" the answer first and then compute the problem was initially a very hard sell, but once they got the concept their final answers improved by magnitudes that were beyond my expectations.
Keep up the outstanding work you do! We are blessed to have you as a mentor. 73
Thank you so very much! I remember discouragement kicking in when reality didn't exactly match calculation. It didn't take long to realize that it actually never will, but I can get close. 🙂 ... relatively speaking.
EXCELLENT PRESENTATION AND,GOOD POINTS SUCH AS REALITY CHECK.
Thank you! 🙂
👍Thank you sir.
You are welcome! 🙂
I use metal film 1% value resistors and a Bata that is minim (for temperature stability) of the transistor.
Yes, yes! It used to be that 1% resistors were cost prohibitive. That hasn't been the case for a lot of years, though. I almost exclusively use 1%,metal film resistors (leaded) or thin/thick film surface mount.
I do leaded on the bench (breadboard) then, if I do make a circuit board, I go with surface mount. I have literally built hundreds of surface mount boards over the years. The joys of being the product design EE and the technician and the manufacturing engineer and the test engineer all rolled into one!🙂
Yes, I wore different hats when I was working as well. I have started looking at other video's. They are very well put together and presented for a layman to understand ( no knowledge of electronics ).
@@rtybn2012This is where my channel started with things like "Understanding Voltage", "Understanding Current", "Understanding Resistance", Ohm's Law, Kirchhoff's Voltage and Current Laws, Thevenin's and Norton's Theorem and so on. (maybe I should refactor some of these earlier videos and re-release them???).
This series here begins with understanding how diodes and BJT transistors work on a basic level. Getting into the middle or late into a series such as this, I *have* to assume that folks have some background at least from the videos leading up to this one. At the same time I also try to assume that someone is, in fact, jumping into the middle of the series to view a video of interest to them. It's a tough balance to keep. That is why I am constantly pointing people back to other videos if the concepts are foreign to them. So, it is all there somewhere in the multitude of videos I have produced. 🙂
What makes my videos different (in my opinion) is that I try to answer the questions that naturally come up to an inquisitive experimenter, but are nearly never/rarely answered elsewhere. This has been my own frustration in relearning things. It amazes me how many, many places I have to go sometimes to piece together the whole story. I really try to bring it altogether in one place.
You are right, there are TONS of videos out there, all with their piece of the puzzle.🙂
This is great, actually all of your videos are. Ralph, I wanted to ask what advice would you give to a new ham who is interested in learning to build linear amplifiers, specifically ones with 3-500z's. Any assistance is greatly appreciated. 73's KJ5CRY
My first advice when working vacuum tube of any flavor ... respect the high voltage! Then with tubes like these high power linears ... doubly-respect the high voltage. I've been seriously nuked because I got careless ... and it is soooooo easy to forget and get your hands in the wrong places and REALLY wish you hadn't!
@electronicsfortheinquisitiveex For sure! Any specific reading material recommendations?
@@RL-521 If it were me looking to work with vacuum tubes at this point, I'd be going back to my OLD Radio Amateur's Handbook (ARRL). They deal with tubes in much more detail than the new ones and are more oriented toward home brewing. I have a 1956 and a 1939 Handbook. Beyond this, I've been out of the vacuum tube loop so long, I'm not sure where I'd go for more modern texts on the subject. Sorry I cannot be more help. 😞
@@eie_for_youno worries, take care!