Transistor capacitor circuit design guide
video description
Date: 2023-11-17
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Comments and reviews: 29
Mike
Excellent project, I think I would switch it up a bit and using a AC to DC wall wart as the power supply as it seems they come with anything electronic and I have a bunch of them of varying voltages lying around, and one of them would plug in directly to my tree lights and get it going without the need for a battery so I can feel more comfortable leaving it on all day long.
As an aside, I do want to personally thank you for your videos, I teach an intro physics E&M lab class and have been doing so remotely for the past 2 years and for a few of the labs I do link directly to some of your videos (resistors, diodes, capacitors, etc) as part of the lecture (not done live) as I think the visuals that you have are absolutely perfect, and way better than what I could do, also a number of my students are EE students so I'm sure your other videos that are not related to what I'm doing are relevant to them as a nice way to teach them. So indirectly your work has helped me teach others (I hope, so thank you.
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Excellent project, I think I would switch it up a bit and using a AC to DC wall wart as the power supply as it seems they come with anything electronic and I have a bunch of them of varying voltages lying around, and one of them would plug in directly to my tree lights and get it going without the need for a battery so I can feel more comfortable leaving it on all day long.
As an aside, I do want to personally thank you for your videos, I teach an intro physics E&M lab class and have been doing so remotely for the past 2 years and for a few of the labs I do link directly to some of your videos (resistors, diodes, capacitors, etc) as part of the lecture (not done live) as I think the visuals that you have are absolutely perfect, and way better than what I could do, also a number of my students are EE students so I'm sure your other videos that are not related to what I'm doing are relevant to them as a nice way to teach them. So indirectly your work has helped me teach others (I hope, so thank you.
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Paul
Tip: Solder the (AE) aluminum electrolytic capacitors flush with the board. Per IPC-610, I recall if they have to be raised they need some kind of reinforced support on the leads. Whether by creating a spring kink or applying RTV under the leads. Sorry I see it so much as an EE on end product and it makes me want to head slap. Think about those tiny skinny leads holding that big belly cap. Makes it easier to accidentally bend a few times max and thats it.
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Tip: Solder the (AE) aluminum electrolytic capacitors flush with the board. Per IPC-610, I recall if they have to be raised they need some kind of reinforced support on the leads. Whether by creating a spring kink or applying RTV under the leads. Sorry I see it so much as an EE on end product and it makes me want to head slap. Think about those tiny skinny leads holding that big belly cap. Makes it easier to accidentally bend a few times max and thats it.
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MysticoftheVoid
2: 19 I am a bit late to the comments if anyone can help me out? Looking at the circuit I noticed that the capacitors are hook up backwards? I did this same circuit myself and tested it and noticed that the capacitors still work anyway you flip them them in the circuit. I have had the flip-flop circuit running with the capacitors the way backwards and havent noticed any problems.
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2: 19 I am a bit late to the comments if anyone can help me out? Looking at the circuit I noticed that the capacitors are hook up backwards? I did this same circuit myself and tested it and noticed that the capacitors still work anyway you flip them them in the circuit. I have had the flip-flop circuit running with the capacitors the way backwards and havent noticed any problems.
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sclm55
HOLLY COW! So much info for a guy who has been fascinated with electronics, but never really took any in-depth courses on it (just come fundamentals long, long ago.
I really appreciate your videos. I will be going back over this video; and also find the one that precedes this one. Thank you.
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HOLLY COW! So much info for a guy who has been fascinated with electronics, but never really took any in-depth courses on it (just come fundamentals long, long ago.
I really appreciate your videos. I will be going back over this video; and also find the one that precedes this one. Thank you.
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BlackDidThis
This is surely the best explanation to anyone of pretty much any level of knowledge in electronics to correctly grasp the major components of what such circuitry is actually meant for and how you can benefit from the properties of these components.
Thank you so much good sir.
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This is surely the best explanation to anyone of pretty much any level of knowledge in electronics to correctly grasp the major components of what such circuitry is actually meant for and how you can benefit from the properties of these components.
Thank you so much good sir.
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Andrew
Crazy that this is a completely analog circuit; no controllers or computers operating the lights. The capacitors act as delay sensors in this configuration. Makes one wonder if this is how old neon lights worked in the early part of the 20th century. Very fascinating circuit.
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Crazy that this is a completely analog circuit; no controllers or computers operating the lights. The capacitors act as delay sensors in this configuration. Makes one wonder if this is how old neon lights worked in the early part of the 20th century. Very fascinating circuit.
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Harry
Thank you for this video. I have this components on university, but without your videos and real life examples and projects, I would only forget all what I was teached. You are making a difference in understanding and learning. Thank you very much for your dedicated work.
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Thank you for this video. I have this components on university, but without your videos and real life examples and projects, I would only forget all what I was teached. You are making a difference in understanding and learning. Thank you very much for your dedicated work.
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john
ok made this, working, but I want to use slightly larger leds (9 x 1 watt 350mA, using 350mA led driver) but worried about current to transistor can you suggest an appropriate transistor that could handle the current? not sure if bc547 can handle that current
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ok made this, working, but I want to use slightly larger leds (9 x 1 watt 350mA, using 350mA led driver) but worried about current to transistor can you suggest an appropriate transistor that could handle the current? not sure if bc547 can handle that current
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Sandro
This video has gave me such a good understanding of electronic circuits. Knowing how each component works is cool but seeing how they can be cleverly arranged to do what you want is really amazing to me. You explain everything very well. Excellent video
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This video has gave me such a good understanding of electronic circuits. Knowing how each component works is cool but seeing how they can be cleverly arranged to do what you want is really amazing to me. You explain everything very well. Excellent video
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Anthony
Not sure if you have already made a video on Crankcase pressure regulators (CPR) and evaporator pressure regulators (EPR) within a refrigeration system if not, could you kindly. Thank you for your content its been a huge help in learning about HVAC
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Not sure if you have already made a video on Crankcase pressure regulators (CPR) and evaporator pressure regulators (EPR) within a refrigeration system if not, could you kindly. Thank you for your content its been a huge help in learning about HVAC
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ellana_de
3: 09 I understand that after capacitor 1 reaches 0. 7V, the current will go to the base of transistor 2 which will turn it on. However, I don't understand how this turns off transistor 1. Someone mind to explain? I will appreciate any help
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3: 09 I understand that after capacitor 1 reaches 0. 7V, the current will go to the base of transistor 2 which will turn it on. However, I don't understand how this turns off transistor 1. Someone mind to explain? I will appreciate any help
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DK
Great video.
Can you do a video on 8 mode christmas tree lights. They use 2 trasistors, one resistor, one diode, one momentary switch and one capacitor. Simple circuit yet it has 8 modes from fast flashing, slow alternating flashing, fade etc.
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Great video.
Can you do a video on 8 mode christmas tree lights. They use 2 trasistors, one resistor, one diode, one momentary switch and one capacitor. Simple circuit yet it has 8 modes from fast flashing, slow alternating flashing, fade etc.
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Craig
In your diagram the negative terminal of the capacitor is connected to the base of the transistor. In your schematic the positive terminal of the capacitor is connected to the base of the transistor?
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In your diagram the negative terminal of the capacitor is connected to the base of the transistor. In your schematic the positive terminal of the capacitor is connected to the base of the transistor?
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Om
How do I make a circuit where (10) leds light up 1 by 1 but like it starts from left to right and instead of starting from left again it starts from right to left.
Like 12345678910
10987654321.
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How do I make a circuit where (10) leds light up 1 by 1 but like it starts from left to right and instead of starting from left again it starts from right to left.
Like 12345678910
10987654321.
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Justin
Would someone mind helping me understand what causes the first LED to ever turn off? I can't figure what cause that first transistor to turn off once it is already on. THANKS
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Would someone mind helping me understand what causes the first LED to ever turn off? I can't figure what cause that first transistor to turn off once it is already on. THANKS
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Vinny
This is the best description and demonstration of capacitors Ive seen. Everyone explains how they are built but no one provides concrete examples. Thank you so much.
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This is the best description and demonstration of capacitors Ive seen. Everyone explains how they are built but no one provides concrete examples. Thank you so much.
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Sky
3: 17 Which resister is R1, and which resister is R2, and which resister is R3, and which resister is R4? But, thanks for identifying the values of said components.
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3: 17 Which resister is R1, and which resister is R2, and which resister is R3, and which resister is R4? But, thanks for identifying the values of said components.
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Joey
Suggestion: label the caps and transistors in the circuit demonstration with the same names as your narration. Capacitor 1, transistor 1, etc. Nice work though.
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Suggestion: label the caps and transistors in the circuit demonstration with the same names as your narration. Capacitor 1, transistor 1, etc. Nice work though.
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ng
Man it literally took me ages to understand how the flip flop circuit works simply because I forgot which pin is the negative and which is the positive in and LED
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Man it literally took me ages to understand how the flip flop circuit works simply because I forgot which pin is the negative and which is the positive in and LED
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Goat
You should sell these kits. I do a similar circuit in my soldering class. If you sold these as kits I may buy them as labs instead of what I am using.
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You should sell these kits. I do a similar circuit in my soldering class. If you sold these as kits I may buy them as labs instead of what I am using.
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Pedro
I really enjoy your videos, but can you please post a video on the joule thief? It's a simple circuit and I'd love to have it be explained. Thanks
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I really enjoy your videos, but can you please post a video on the joule thief? It's a simple circuit and I'd love to have it be explained. Thanks
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harshal369
How do currant not flow in base pin of transistor 2 when currant pass through resistor 2 currant flow in capacitor 1 but not flow in base pin
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How do currant not flow in base pin of transistor 2 when currant pass through resistor 2 currant flow in capacitor 1 but not flow in base pin
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Mariamgimiag
What is the emf? And how the photodiode and LED diode works in detail and how the thermal resistance and photo resistance works in detail
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What is the emf? And how the photodiode and LED diode works in detail and how the thermal resistance and photo resistance works in detail
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Erdem
Thanks for the video. I didnt understand sth. In 2: 42 why current flows from BC547 on the left? Why not both transistors at the same time?
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Thanks for the video. I didnt understand sth. In 2: 42 why current flows from BC547 on the left? Why not both transistors at the same time?
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Ashraf
Its nice how you show the resistor calculations for the LED. Please do the same for all other resistors and capacitor for the transistor
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Its nice how you show the resistor calculations for the LED. Please do the same for all other resistors and capacitor for the transistor
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Joshua
This is one of the best circuit videos I have ever watched! I wish I had this while I was in school. Everything is very well explained!
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This is one of the best circuit videos I have ever watched! I wish I had this while I was in school. Everything is very well explained!
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ManofContent
what makes the current travel through resistor 3 when the supply begins, why not resistor 1 or 4 since it has lesser resistance.
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what makes the current travel through resistor 3 when the supply begins, why not resistor 1 or 4 since it has lesser resistance.
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Justin
Informative video as always. I want to suggest a video idea, industrial dryers. I like your work on HVAC systems, helped me so much.
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Informative video as always. I want to suggest a video idea, industrial dryers. I like your work on HVAC systems, helped me so much.
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Rahul
I watch most of your videos and helped a lot. If get time please make videos on types of AC DC generators and motors as well. Thanks
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I watch most of your videos and helped a lot. If get time please make videos on types of AC DC generators and motors as well. Thanks
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