You are asking why 4 way intersections (or connections) are a no-no? This has never been an acceptable practice. There is only a dot that shows the connection. If the dot is not obviously there - which is often the case. When a schematic is large or printed and especially folded - the dot is often very difficult to see. So, then it is a question - is that a 4 way connection? So, a long time ago it was decided that they should be avoided, and there is no reason not to avoid them. None - except for laziness. When the computer made computer automated tools poplular, like schematic creation, some software were designed to put a loop around a wire when crossing if there was not a connection. This made it obvious, but it looked a bit strange especially if there were a lot of them. Dots were made very large in some tools, but this also looked funny. This is part of the lost art of electronics. So, I'm doing my small part in teaching the correct methods...;)
I do admire your tenacity to do what's right in electronics, and you do an excellent job. With all due respect, i don't see why it's such a big issue. There are just differing styles. To say it's never been accepted is hard to believe. I've seen many of schematics over time, some of which use connecting intersections with dots, and the schematic police never arrested anybody. Seems there are conflicting rules. I've seen both styles, and yet, they may conflict, yet eveybody just accepts it. Nobody obsesses over it. As long as the schematic looks concise, to each their own. Just had to ask. Just seemed a little odd, that's all.
Another great Micro Cap tutorial. More in-depth Micro-Cap tutorials are always appreciated. Maybe one on how the library is organized and how to keep it organized when adding new parts. Also, maybe some down and dirty SPICE modeling demos??
One interesting oddity I noticed... Is that the copy of that sample circuit in my version has sliders set up all over the place to change the values - while it seems your copy doesn't. I have no idea why that would be the case, though. Very strange.
LM117, the derivatives LM317 and LM1117-adj have the same pinout. Today the cheap LM1117-5 (5 V) and LM1117-3.3 (3.3 Volt) are very popular. The LM317 can handle high voltage between input and output up to 35 (max 40) volts. Disadvantage is the high voltage loss between input and output with LM317, the LM1117 is only slightly better. A current source can be built with one resistor and the component. However, since any voltage can be set, the circuits are still a must-have for hobbyists.
Great tutorial. I am learning how to use MicroCap so your MicrpCap tutorial series is a great help. I have a question: when you talk about ESR, it seemed we have to add it to the circuit so that MicroCap can simulate the effect. I also noticed that in MicroCap there is only 1 generic capacity type (it doesn't even support polarity). Do you have any suggestion, on the occasions that we need to test effective of different capacitors (besides the rated value)? Do we have to build our own ESR, ESL, leaking and etc into the circuit?
Nice quickee. Thank you for everything. Your instruction is top notch, both pro and novice review and learn. "KING of POWER", When we look at Power, it can destroy an otherwise good system in so many ways. Thank you so much for(teaching x and y caps at start of circuit ,the common choke, the transformer best overall demonstrations, inrush filter cap and on and on. I want to ask about that big triple power supply on your shelf, (3005f) Mine has poor reading at low end, both volt and amp. I was told that i should make a preload system to stabilize. Also I was told that this linear power supply is shorted inside to earth ground, I have never read any outputs through the oscilloscope, you know, afraid of direct POW. Finally I was advised to never subject it to pulse power out. I have a 48 volt solenoid that will draw 4 amps for about 10msec.(fly back in place). Could you do a short "my thoughts on the 3 issues"? I will get an iso transformer or those probes (I learned from you), or battery my osc. Till then Happy Holidays. from Bill Fischer.
Thank you for the info! I am curious to know if MicroCap has an "FFT" analysis function, as I think that is a very handy one to ues to check and see if your power and noise harmonics are filtered out of a power supply simulation.
I've downloaded version 12 of UCap and installed it and found this circuit. I've been using it for five minutes. It is too cool for analysts. Does it do board layout like my CircuitMaker2000 Pro (still have it working after 20+ years - lol) (Maybe it hasn't been quite that long). Of course, I do not have modern IC packages in my old CM2000Pro, but there is a free on-line version too, but I like it locally.
Thanks for the feedback! MicroCap is very feature rich, but it doesn't do board layout which is OK with me. For board layout, the parts have to have so much more info built into the library. SPICE analysis often requires placing parts to simulate the parasitics which are not real parts that get placed on the board, so the schematics are different. CircuitMaker was a popular package, I can't remember who purchased it - but I think it was sucked into another program for the simulation engine.
Hi Eddie, can you pick some classic sample circuit, and see if it can be further improved like this one, or how different capacitor will have different result ... thanks.
very good! any chance of doing a segment on designing a smps for valve amplifiers running at 120kHz they get bad press unjustifiably I think if the specially designed for the purpose they're better than linear supply. merry merry Christmas!
If you're going digital, how about building a simple DAC circuit. The Texas Instruments PCM2704C looks like a good choice as it has a built in usb interface, so you won't need to write a driver for it.
I create schematics for one project for which i need power supply for MM phono preamplifier and with simple LM117 and TL431 MicroCap show ripple at the end as 33.332 μV on 16.091 V output. This is -113.67 dB ripple rejection. This is very confusing and perfect result for LM117/317 ?! At the end I review complete schematics and I suppose where is that simple benefit achieved... RC filter grids at the TL431 kathode and anode and this RC filters also have influence between LM117 ADJ and OUT legs and it serves also as bypass RC filters for LM117. Is this real or MicroCap doing something wrong? If you want I can upload MC project for review...
Thanks for the great question! This could be a great example video if you don't mind. Send the the schematic and I'll do a video showing how to improve the results (if I can;).
@@KissAnalog Hi Eddie. I was placed reply with web link for download schematic from my Box account but I dont see my reply?! Do you know what happend with this, YT blocked my reply or something else is gone wrong?!
would using a pnp bjt 2 smooth out the output? help?... nice tutorial Ed!! I'll go check this software out NOW!! it's free!! wowee! good luck with all this! yup, I would love 2 see some tech vids!!
Not interested in sales. I came here for the knowledge. That's why I unsubscribed. To many promotions. Your video came up because I use to subscribe. That's why I'm making a comment.
Thanks for the feedback! I'm trying to catch up with reviews for the holidays - hopefully to help people make better decisions on what to buy. I'm also mixing in videos like this and will be passing on as much knowledge as I can - so maybe you'll be back. Subscribing is a free way to support the channel.
![Seungmin "그렇게, 천천히, 우리(As we are)" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/kAzmhLHePqU/mqdefault.jpg)
Thank you very much for micro_cap spice simulation tutorial video 👏👏👏
You are welcome 😊 I appreciate you!
@@KissAnalog you are always welcome dear
Thanks again Eddie.
Powerful program!
Thanks - I agree!
Always nice to have Micro-Cap tutorials , the program is great but need some training to get out what you want. 👍😎
Thanks Peter! Let me know if there's something that you would like to see;)
3:05 Why is that a no-no?
You are asking why 4 way intersections (or connections) are a no-no? This has never been an acceptable practice. There is only a dot that shows the connection. If the dot is not obviously there - which is often the case. When a schematic is large or printed and especially folded - the dot is often very difficult to see. So, then it is a question - is that a 4 way connection? So, a long time ago it was decided that they should be avoided, and there is no reason not to avoid them. None - except for laziness. When the computer made computer automated tools poplular, like schematic creation, some software were designed to put a loop around a wire when crossing if there was not a connection. This made it obvious, but it looked a bit strange especially if there were a lot of them. Dots were made very large in some tools, but this also looked funny. This is part of the lost art of electronics. So, I'm doing my small part in teaching the correct methods...;)
I do admire your tenacity to do what's right in electronics, and you do an excellent job. With all due respect, i don't see why it's such a big issue. There are just differing styles. To say it's never been accepted is hard to believe. I've seen many of schematics over time, some of which use connecting intersections with dots, and the schematic police never arrested anybody. Seems there are conflicting rules. I've seen both styles, and yet, they may conflict, yet eveybody just accepts it. Nobody obsesses over it. As long as the schematic looks concise, to each their own. Just had to ask. Just seemed a little odd, that's all.
His youtube home page pic shows a schematic with lots of connecting 4-way intersections.
Hi Eddie, Your sacrifices don’t go unnoticed. You made this easy to understand. Great video. Thank you
Thanks so much!!
Another great Micro Cap tutorial. More in-depth Micro-Cap tutorials are always appreciated. Maybe one on how the library is organized and how to keep it organized when adding new parts. Also, maybe some down and dirty SPICE modeling demos??
Thanks Paul!! I'll try to do that soon;)
These tutorials are great especially now the software is free, more please !....cheers.
Thank you! More coming;)
One interesting oddity I noticed... Is that the copy of that sample circuit in my version has sliders set up all over the place to change the values - while it seems your copy doesn't. I have no idea why that would be the case, though. Very strange.
Thanks for that feedback! I'll show why this is in a video to come soon;)
LM117, the derivatives LM317 and LM1117-adj have the same pinout.
Today the cheap LM1117-5 (5 V) and LM1117-3.3 (3.3 Volt) are very popular.
The LM317 can handle high voltage between input and output up to 35 (max 40) volts.
Disadvantage is the high voltage loss between input and output with LM317, the LM1117 is only slightly better.
A current source can be built with one resistor and the component.
However, since any voltage can be set, the circuits are still a must-have for hobbyists.
Thanks Jen! I agree, these regulators are extremely useful!
What software do you use to create the screen capture?
Great tutorial. I am learning how to use MicroCap so your MicrpCap tutorial series is a great help. I have a question: when you talk about ESR, it seemed we have to add it to the circuit so that MicroCap can simulate the effect. I also noticed that in MicroCap there is only 1 generic capacity type (it doesn't even support polarity). Do you have any suggestion, on the occasions that we need to test effective of different capacitors (besides the rated value)? Do we have to build our own ESR, ESL, leaking and etc into the circuit?
Nice quickee. Thank you for everything. Your instruction is top notch, both pro and novice review and learn. "KING of POWER", When we look at Power, it can destroy an otherwise good system in so many ways. Thank you so much for(teaching x and y caps at start of circuit ,the common choke, the transformer best overall demonstrations, inrush filter cap and on and on. I want to ask about that big triple power supply on your shelf, (3005f) Mine has poor reading at low end, both volt and amp. I was told that i should make a preload system to stabilize. Also I was told that this linear power supply is shorted inside to earth ground, I have never read any outputs through the oscilloscope, you know, afraid of direct POW. Finally I was advised to never subject it to pulse power out. I have a 48 volt solenoid that will draw 4 amps for about 10msec.(fly back in place). Could you do a short "my thoughts on the 3 issues"? I will get an iso transformer or those probes (I learned from you), or battery my osc. Till then Happy Holidays. from Bill Fischer.
Thank you for the info! I am curious to know if MicroCap has an "FFT" analysis function, as I think that is a very handy one to ues to check and see if your power and noise harmonics are filtered out of a power supply simulation.
Thanks for your feedback!! Yes it does have an FFT function. I’ll show that in an upcoming video;)
@@KissAnalog - Nice, thanks!
I've downloaded version 12 of UCap and installed it and found this circuit. I've been using it for five minutes. It is too cool for analysts. Does it do board layout like my CircuitMaker2000 Pro (still have it working after 20+ years - lol) (Maybe it hasn't been quite that long). Of course, I do not have modern IC packages in my old CM2000Pro, but there is a free on-line version too, but I like it locally.
Thanks for the feedback! MicroCap is very feature rich, but it doesn't do board layout which is OK with me. For board layout, the parts have to have so much more info built into the library. SPICE analysis often requires placing parts to simulate the parasitics which are not real parts that get placed on the board, so the schematics are different. CircuitMaker was a popular package, I can't remember who purchased it - but I think it was sucked into another program for the simulation engine.
Hi Eddie, can you pick some classic sample circuit, and see if it can be further improved like this one, or how different capacitor will have different result ... thanks.
You bet! Thanks for the suggestion!
What about AC analysis, as I've seen voltage regulators models are not accurate at all.
Thank you! Great idea for another video;)
very good! any chance of doing a segment on designing a smps for valve amplifiers running at 120kHz they get bad press unjustifiably I think if the specially designed for the purpose they're better than linear supply.
merry merry Christmas!
Great suggestion! Thank you and have a Merry Christmas;)
@@KissAnalog another thing I was wondering about using class d as the power supply, it would be cleaner I imagine.
Great little tutorial! :-)
I have sent you a tiny e-mail about the program.
Thank you!! And thanks for the email.
Will you use our digital multimeter?
Thanks for asking, but I'm sorry, don't know what multimeter that you are talking about?
@@KissAnalog Have you seen my email? Have you found my sample?
If you're going digital, how about building a simple DAC circuit. The Texas Instruments PCM2704C looks like a good choice as it has a built in usb interface, so you won't need to write a driver for it.
I create schematics for one project for which i need power supply for MM phono preamplifier and with simple LM117 and TL431 MicroCap show ripple at the end as 33.332 μV on 16.091 V output. This is -113.67 dB ripple rejection. This is very confusing and perfect result for LM117/317 ?! At the end I review complete schematics and I suppose where is that simple benefit achieved... RC filter grids at the TL431 kathode and anode and this RC filters also have influence between LM117 ADJ and OUT legs and it serves also as bypass RC filters for LM117. Is this real or MicroCap doing something wrong? If you want I can upload MC project for review...
Thanks for the great question! This could be a great example video if you don't mind. Send the the schematic and I'll do a video showing how to improve the results (if I can;).
@@KissAnalog Hi Eddie. I was placed reply with web link for download schematic from my Box account but I dont see my reply?! Do you know what happend with this, YT blocked my reply or something else is gone wrong?!
would using a pnp bjt 2 smooth out the output? help?... nice tutorial Ed!! I'll go check this software out NOW!! it's free!! wowee! good luck with all this! yup, I would love 2 see some tech vids!!
Thank you! LOL You always make me laugh! I'm glad that you have the Micro-Cap software now;)
Not interested in sales. I came here for the knowledge. That's why I unsubscribed. To many promotions. Your video came up because I use to subscribe. That's why I'm making a comment.
Thanks for the feedback! I'm trying to catch up with reviews for the holidays - hopefully to help people make better decisions on what to buy. I'm also mixing in videos like this and will be passing on as much knowledge as I can - so maybe you'll be back. Subscribing is a free way to support the channel.