Classic Circuits You Should Know: Delayed Start
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- เผยแพร่เมื่อ 3 พ.ย. 2019
- Classic Circuits You Should Know: Delayed Start
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Classic circuits you should know, I can see a book in that title!
Yes I think your right. "Dewy the bears classic circuits you should know" I'm telling ya Paul this guys on to something😄
Thank you for sharing your knowledge. This classic circuits series is fantastic, please do more. Prayers for your improved health.
Thanks. More videos on this series soon, I promise
Simply a simple idea but the tutorial makes for useful information in creation of other project ideas I enjoyed it.
Many applications for this circuit, really like how you presented it and this series in general
I'm really liking your videos, adequate amount of talking, easy and simple explanation, and you seem to be humble even though you clearly know what you're talking about.
Congratulations!
I'm learning a lot ;)
Thank you
Awesome, Thanks a million! This will work well on my mono block amp. Have a great week!
Hi Paul, great little circuit, I've worked with electronics for decades, mostly valve (tube) audio, but now I'm just strting to experiment with mosfets for fun. This has given me a couple of ideas, thank you.
Great instruction - very helpful! thanks!
Simple but useful. Thank you
well done. I would have liked to see the adding of the diode at the end to protect the IC.
Thank you for follow up video, Paul! Sorry, for the late reply as I was busy.
556. Make a latching, delayed on. So you can use a momentary switch for on and a momentary switch for off.
make a latch with it!! but i guess the 555 has latches in it, so it doesnt count.
@@magnuswootton6181 What? What do you mean, doesn't count?
@@ed-jf3xh if you make a latch using a latch, then its just superfluous machinery. like in maths, if you use trig functions to make a trig function, then it doesnt count either. real trig only uses basic algebra moves, otherwise its not its true genesis.
Thanks. Learn so much as a newbie from you.
Another educating video. Thanks Paul
The MC34063 is quite a widely used IC. Very good question Paul, I am very interested in all the answers.
Love this series Paul! Simple electronics. 👍
It should but put in print for all nerds everywhere especially baby nerds to get a great start on learning in general!
great and useful video!
Very cool classic circuit you built there Paul. I've used a similar circuit to play a joke on some friends. great video Paul.
Thank you great work
Paul, another wonderful informative video, I really apricate all you do for us beginners. Like Jonathan Dean I think a book would be a good idea.
Thank you so much for this Video. You did explain very well. Interesting would be an explanation about current Flow and sich Details especially for Beginnes in electronic. With ou all the best! Boris🇨🇭
hey paul,
just caught your latest ,well done as always. wanted to say thanks on tcs34725 rgb light sensor color recognition,it works great a big difference compared to the other one that I had purchased. 👍
Awesome! 555 has some interesting uses besides being a Clock
Thank you
I love these ones. Reminds ya why ya love this stuff. By the why I got one of the electronics for dummies book from my library but only looked at last nite. I was proud to say I had already learned almost all what was in the book.(which was brilliant by the way it's called "electronics "all in one" for dummies" by Doug Lowe) it had some very cool bits at the end that shows you how to program. And to make not/and/or/ gates with transistors . Bloody brilliant. 😁
thank you
Well done Paul
Thanks!
Good stuff!
Thank You
A TL494CN IC is also compatible here and is used drastically in the electronics world. It's a PWM SPMPS driver ic.
Another nice little project to play around with and I'll be keeping the casual throw away line ' Drain from - source to' as good aide memoire for N Channels.
as usual this is fantastic. When will we have your book "classic circuits you should know"? :D
shouldn't the bulb be between drain and fet and not from source to gnd?
Morning Paul.
Sir can i ask for a clearer schematic diagran?
Mr. Paul thankyou very much for this video , it really helped me. But i have doubt about the circuit diagram that you drew in the first place as you have connected the capacitor directly to the +Vcc but i think it should also pass after switch because if it s directly connected to +Vcc than how the circuit will take time to on the output, guide me if i am wrong
Love grass roots electronics, far more fun than boring Arduino - thanks for the brilliant circuit
i like the series! =D
Very cool, for me that capacitor can be swapped out for a good strong coffee before I can start each morning.
I am asking this because I want to make sure I understand the 555 timer; it definitely draws my interest as you videos do! In you diagram shouldn't the capacitor be on the other side of the switch instead of directly connected to the positive +6 VDC? Again I may not understand how the 555 time work. Thank you for the great videos! I really like the "circuits you should know" series"!
I was wondering the same
I like this series
I’m still a little unfamiliar with exactly what’s going on....but hey....you’re the only guy that has made videos with the pretext of “big ass circuits are made out of tinier simpler parts, and you should be able to recognize it”
Shouldn't the capacitor be connected to the power supply through a switch?
7404 and its cmos brothers, need inverters quite a bit.
an usual IC? what about based 8051 microcontroller ?They are still used even in custom LED control chips
Love your stuff. Looking for a method to extend the duration of a timed circuit. In other words extend the duration that the circuit remains on before shutting off. Kids space ship, with flashing lights and siren. push mom. on and beeps flashes for 10 seconds. I would like to make it 30 seconds or whatever.
Simple design. 1 8 pronged miniature IC few caps resistors all micro. threw some caps at it nothing.
I should just watch more of your vids like this one. lol.
The 555 timer challenge, ok. I like your "delay on" circuit I can use that. cool, thanks.
Great tip on using the diodes for protection, thank you, excellent.
I would also like to mention the method you have selected to connect your power supply to your breadboard. obviously better than a single connection and much more secure. I will be adopting some of that; (smart).
who's this guy? It's me, just me having fun with electronics. I know you don't know me, but I'll comment as if you do.
You know connecting things up on the bread board can be tediously time consuming using bare hands, especially as it gets populated. I started using tools to push items into position. mini needle nose pliers, hemostats. They are easier to see through and much faster. I'm sure you probably have different methods as well.
Alright man. cool, very cool. I'll be looking for all of your (circuits you should know) by heart videos. thanks again, see you later.
Sir can I ask for ur parts list sir? Like the specific model of MOSFET and IC
Your voice reminds me of the late great John Candy, so I imagine John Candy teaching me about electronics. I am totally cool with that. Thanks and sub'd.
Not sure if I'm the only one however, I would like to see some of the math behind everything you do. Keep up the great content. I'm an electronics engineering student and I find your videos entertaining.
This circuit can be found in the datasheet with the formula and derivative. You should be able to rearrange the equation to find any variable by freshman year if your an EE student.
What is the part number for the mosfet please?
This is fascinating, but I made one following this as closely as possible (I used a zero PCB and I soldered directly) and the light turned on instantly. I used a 470 uf capacitor, but that's the only difference. Everything else was the same.
Does this circuit act as a filter, I want to use it to collect a signal from a led when it is constantly lit and not when it is flashing.
Thanx
The mosfet P channel right؟
Neat little circuit. However, even with the change in capacitor placement, you could miswire the circuit according to the schematic. Double check your work with his actual build just to be sure.
GOOD PRESENTATION.I WANT TO PLAY WITH THAT A2D2 ROBOT LOL!
Can't think of anything other than the op amp. There being 2 in each timer, I'd say the op amp is the most abundant IC there is.
wonderful :)
mosfet for high current ...cap on gate to trigger
Im trying this but some how get the reverse effect my led comes on fully the dims and goes off. GRRR i know im making a simple mistake but dont know what it is im doing wrong. Will not give up
LM7805, LM7812
Thanks for the lesson Paul.
What's up gator-boy?
@@learnelectronics
Still waiting for winter. 88 degrees today.
@@learnelectronics
Oh, you did mention a challenge about other popular ICs. Regulated power supply ICs were used everywhere.
7805 way more popular :) Thanks for your your videos! I really enjoy them.
Definitely. 7812 and 317, too.
I'm very much a beginner. My breadboard has a 2.7v capacitor, LED with resistor, small toy motor and 3 AA batteries in a power pack. The circuit works, LED an motor continues to run a short time from capacitor storage. How would a circuit be made to first charge the capacitor , disconnect AA battery pack; then enable the 2.7v capacitor to run the motor and LED using a bread board on/off switch? (LED fades as power is drained from capacitor)
Going into solar charge controller protection circuit. The manual says ’Don’t power controller with panels connected’ I say ‘Don’t sell charge controllers without delayed solar inputs’
Kool!
Lm7805 would be my guess.
shouldn't changing the resistor (the one attached to the capacitor) also change the time constant?
Nah, the capacitor loads the resistor. Anything connected to the capacitor will have the current voltage of the capacitor.
The 555 is basically an opamp. I used an LM358 for my timer. Used half of the chip. The unused opamp has pins 6 & 7 shorted together to produce a voltage follower. Pin 5 is grounded. Tried posting a picture of my rig. Uses one chip, one cap, three resistors and an N-Channel MOSFET to drive the load.
A note on your rig - the FET should follow the load, not power it. Unless you used a P-Channel MOSFET. P channel FETs are fewer and more expensive. You MIGHT want to tell us what MOSFET you used because the way you used it suggests a P channel, not an N. And leaving pin 4 of a 555 floating is not recommended. Can cause oscillation which can lead to heat and damage of the chip. Pin 5 can be left open OR used as a second part of a timing circuit.
Pull up to turn the fet off ?
Well, not to be a smartass, but technically the LM317 and 7805 and 7812 are ICs too. Each of them gets used A LOT too, maybe more than the 555 even? I'm not entirely sure.
Yes, they are ICs as well
I love the intro! Have you thought about a bit of music or sound track? Like a frequency sweep, and show it on the scope! But either way, it's great, and I don't like long intro's, great video, I learn soo much from you! Thanks again!!
107 My Favorite Commentator.
Juan O Savin ❤️
Good Class Today!!! 👍 😉
I know of a Ic....The LM556N.....hehehe!!!!!! Gotcha!
im not sure that you would read this or even treat with the seriousness i would like you to , but i am desperate , so here is my request , i wonder if an Analogue to Digital Converter op amp based would intrigue you enuff to build it ? ps you are one of the best electronics guys online after ben eater , says who ? says me ! nahh just kiddin , youre as good , thanks from Libya
I will look into it
wow!
LockDown; Time to Catchup with all Learnelectronics Videos...
Got me thinking now cd4033be, tc4046bp how about good old lm317t or even 74ls123an
Sorry for the noob question but does current actually pass through the capacitor? Why would it trip the timer after its fully charged? I thought it kinda works like a battery where the current comes out the positive end when needed.
No current passes through a capacitor. A capacitor gathers charges on its plates. The charges are released from the same plate on which they gather.
@@learnelectronics Thats what I dont get. You say it charges the capacitor from VCC which charges the top plate. How can it then trip the timer through the bottom after it charges? Thanks for your help, sent you 5 bucks!
Thank you. The charges accumulate on the plates. They don't pass through. Then when conditions change, ie, it now has a path to discharge, those charge go back in the opposite direction that they came from. Just remember this, capacitors block DC and pass AC.
@learnelectronics ah that's where I was getting confused. I didn't know AC can pass through.
Why does the Capacitor need to wait for the switch to be activated when its attached directly to vcc? I don't get it
I was confused too. As far as I can tell, the diagram is slightly wrong: the capacitor is actually connected to the lower part of the switch, not VCC. You can see it when he shows the circuit at 2:46, he explains that the capacitor is connected to *other* side of the switch (not the VCC side) and to pin 2 of the 555.
@@MoeFH even the switch symbol is wrong.
The LM voltage regulators are more popular.
More Cool Circuits...
copacetic indeedly do
You: Challenge you to find ANY...
Me: Hehe... opamps.
You: NOT OPAMPS.
Me: God dammit.
On a side note, a 556 was used for the joystick X + Y axes on some older computers IIRC.
But what for this delay ? Im asking seriously.
After power on and wait for stabilization of power, then do a one time self test of a warning alarm, for example. Yea , my boat overheated but the alarm was dead.
Is it true what they say about MOSFETs being found on the nirt side of trees and rocks? Oh wait that may been just Moss! Ha-ha! Would you be interested in helping me with a lil project? A cc cv alternator regulator, I'd be glad to compensate for your time, I'm a bit ambitious even thinking about this, with my education, I'm being taught by myself, and ppl like you on Yt! Just reply if you are interested, we talked by gmail before, but I have lost your info, besides I'd like to ask before just cold nailing you, my sister has moved up somewhere around you , in the state anyway, hope to hear from you, thanks man!
Your schematic is incorrect. The cap is connected directly to V+ in the schematic but is connected after the switch on your breadboard.
I put a graphic on the screen saying just that very thing as I was explaining the circuit.
I would have liked it, but the likes are 555... thought it fitting.
Atmega328p-pu can do everything 555 can! Just more real estate
Using such a powerfull MCU for a simple start delay is a misuse! the NE555 is very cheap, simple to use no need for programming code or tools
@@embeddedcastle i wasn't serious... power on resets are cool too
@@embeddedcastle actually, a really useful ic is the sn74ls122an jk flip flop, its really simple an great for toggling things! As for your challange..lm393p?
Attiny series mcu are tiny. But 555 can have better power supply flexibility. E.g, can easily used in a car.
Hahahahaah perfect 10 count lmfao.
555 Timer.. is the, 555 Timer.. most used, 555 Timer in... 555 Timer...., 555 Timer.... AAANNNNND? 555 Timer. Woohoo yeah. XD
What kind of horrible crime can I use this for?
While explaining how the circuit works, please don't block our view of the circuit schematic/diagram.
Just a crappy 555 timer circuit, 70's technology..ehhh!
Thanks!
Thank you!
Sir can I ask for ur parts list sir? Like the specific model of MOSFET and IC
wonderful :)