Classic Circuits You Should Know: Delayed Start

Подписаться 168 тыс.

Просмотров 35 тыс.

50% 1

Classic Circuits You Should Know: Delayed Start
Yes!! I now have merch: teespring.com/stores/learnele... Electronics themed T-Shirts!
HEY YOU ABOUT TO POST SOMETHING STUPID:
Yes, I know my hands are large/fat. It's because of a heart condition I suffer from called Congestive Heart Failure. Here's a link to some information about CHF: cle.clinic/2TdS2Ux
One of the symptoms is that is causes fluid retention, mostly in the hands, feet/ankles, and face.
It will kill me one day. I'm doing ok right now, but someday...
--------------------------------------------------------------------------------------------------------------------
If you are shopping for electronic components, test gear or consumables please consider visiting my Amazon shop @ amazon.com/shop/learnelectronics
Please check out www.patreon.com/learnelectronics and pledge a dollar if you can. It will go a long way to keeping the channel alive. It costs a bit of money to buy all the items and produce these videos. You help is appreciated.
---------------------------------------------------------------------------------------------------------------------
Or....if you'd like to send a one-time donation you can use this link: paypal.me/learnelectronics
----------------------------------------------------------------------------------------------------------------------
Here is all the gear I currently use:
Oscilloscope 1: Hantek DSO4102C amzn.to/35cVK71
Oscilloscope 2: Siglent SDS1202X-E amzn.to/31Kk1yH
Power Supply 1: TekPower TP3005N amzn.to/2TeQnxI
Power Supply 2: RUIDENG DP50V5A amzn.to/2sNicSe
Signal Generator: JS2800 ban.ggood.vip/d9vk
DMM1: Owon18B amzn.to/2SbIGLs
DMM2: Aneng 8008 amzn.to/2sNQncI
DMM3: Aneng 8009 amzn.to/2S5qeEp
DMM4: Uni-T UT801 amzn.to/2S89SuL
Soldering Station1: Zeny (Yihua)862D+ amzn.to/2S49z4e
Soldering Station2: KSGR T12 amzn.to/2Wk7Dn9
Light Meter Smart Sensor AS803 amzn.to/2B2gyRg

Наука

Опубликовано:

3 ноя 2019

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 126

@jdean399 4 года назад

Classic circuits you should know, I can see a book in that title!

@keithking1985 4 года назад

Yes I think your right. "Dewy the bears classic circuits you should know" I'm telling ya Paul this guys on to something😄

@cw4608 4 года назад

Thank you for sharing your knowledge. This classic circuits series is fantastic, please do more. Prayers for your improved health.

@learnelectronics 4 года назад

Thanks. More videos on this series soon, I promise

@freewolfable 4 года назад

Simply a simple idea but the tutorial makes for useful information in creation of other project ideas I enjoyed it.

@michaelpadovani9566 4 года назад

Many applications for this circuit, really like how you presented it and this series in general

@frankowalker4662 4 года назад

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.

@jimmyfriend532 4 года назад

Awesome, Thanks a million! This will work well on my mono block amp. Have a great week!

@filipester 4 года назад

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 ;)

@learnelectronics 4 года назад

Thank you

@adailyllama4786 4 года назад

Great instruction - very helpful! thanks!

@westerngodzilla 4 года назад

Simple but useful. Thank you

@mike99191911 4 года назад

Another educating video. Thanks Paul

@zezeA380 4 года назад

Thank you for follow up video, Paul! Sorry, for the late reply as I was busy.

@judo-rob5197 3 года назад

Thanks. Learn so much as a newbie from you.

@mattantonelli4273 Год назад

Thank you great work

@Mumme666 4 года назад

Love this series Paul! Simple electronics. 👍

@murrrr8288 2 года назад

great and useful video!

@mikeoliver3254 4 года назад

Very cool classic circuit you built there Paul. I've used a similar circuit to play a joke on some friends. great video Paul.

@stevemaas99 4 года назад

well done. I would have liked to see the adding of the diode at the end to protect the IC.

@bertspeggly4428 8 месяцев назад

Good stuff!

@dukeeod1650 4 года назад

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.

@frang342 4 года назад

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. 👍

@rolandberendonck3900 4 года назад

The MC34063 is quite a widely used IC. Very good question Paul, I am very interested in all the answers.

@keithking1985 4 года назад

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. 😁

@harrysuber753 Год назад

Thanks!

@theengineer9910 4 года назад

Awesome! 555 has some interesting uses besides being a Clock

@borsi99 4 года назад

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🇨🇭

@ed-jf3xh 4 года назад

556. Make a latching, delayed on. So you can use a momentary switch for on and a momentary switch for off.

@magnuswootton6181 2 года назад

make a latch with it!! but i guess the 555 has latches in it, so it doesnt count.

@ed-jf3xh 2 года назад

@@magnuswootton6181 What? What do you mean, doesn't count?

@magnuswootton6181 2 года назад

@@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.

@deepakns6931 3 года назад

Well done Paul

@energyforever720 2 года назад

thank you

@utkf16 4 года назад

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.

@TOMTOM-nh3nl 4 года назад

Thank You

@certified-forklifter 4 года назад

i like the series! =D

@ed-jf3xh 4 года назад

Morning Paul.

@anthonyvolkman2338 4 года назад

A TL494CN IC is also compatible here and is used drastically in the electronics world. It's a PWM SPMPS driver ic.

@moriambar6533 10 месяцев назад

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?

@ponymoore6140 3 года назад

Love grass roots electronics, far more fun than boring Arduino - thanks for the brilliant circuit

@pawelczarnecki7780 Год назад

Thank you

@tomety_tcg2073 24 дня назад

Jezus cię kocha!

@mcboomsauce7922 4 года назад

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”

@jeromesurffoil7033 2 года назад

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.

@stevetobias4890 3 года назад

Very cool, for me that capacitor can be swapped out for a good strong coffee before I can start each morning.

@davidluther3408 4 года назад

GOOD PRESENTATION.I WANT TO PLAY WITH THAT A2D2 ROBOT LOL!

@MichaelSteele02 4 года назад

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.

@davidpyper1688 4 года назад

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.

@ithaca2076 4 года назад

wonderful :)

@micarifamily1 3 года назад

It should but put in print for all nerds everywhere especially baby nerds to get a great start on learning in general!

@blackpinkhitmewiththatddud4237 4 года назад

Sir can i ask for a clearer schematic diagran?

@neverythingk3270 6 месяцев назад

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

@MalagasOnFire 4 года назад

an usual IC? what about based 8051 microcontroller ?They are still used even in custom LED control chips

@tamarabarnett9869 Год назад

Kool!

@blackpinkhitmewiththatddud4237 4 года назад

Sir can I ask for ur parts list sir? Like the specific model of MOSFET and IC

@jamesw3450 4 года назад

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.

@JNSOutdoors 2 года назад

7404 and its cmos brothers, need inverters quite a bit.

@BADALICE 4 года назад

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.

@chtwdb 4 года назад

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"!

@yh_hat_trick491 Год назад

I was wondering the same

@johnmacintosh4432 3 года назад

Shouldn't the capacitor be connected to the power supply through a switch?

@thesocialjusticegamer6505 Год назад

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.

@johnsmith-lb4mo Год назад

What is the part number for the mosfet please?

@petec6690 3 года назад

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.

@mahlonkarpaiya252 3 года назад

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

@wesameed824 4 года назад

Thanx The mosfet P channel right؟

@cyberdjro 4 года назад

7805 way more popular :) Thanks for your your videos! I really enjoy them.

@eraldylli 3 года назад

Definitely. 7812 and 317, too.

@MJ-ii3ss 3 года назад

mosfet for high current ...cap on gate to trigger

@glennkrieger 2 года назад

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.

@robertwebb5586 2 года назад

I know of a Ic....The LM556N.....hehehe!!!!!! Gotcha!

@codyswanson8481 2 года назад

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.

@davidianmusic4869 4 года назад

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’

@Paul-ki8dg 4 года назад

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)

@justinhummel5613 4 года назад

Lm7805 would be my guess.

@pulesjet 4 года назад

Pull up to turn the fet off ?

@bblod4896 4 года назад

LM7805, LM7812 Thanks for the lesson Paul.

@learnelectronics 4 года назад

What's up gator-boy?

@bblod4896 4 года назад

@@learnelectronics Still waiting for winter. 88 degrees today.

@bblod4896 4 года назад

@@learnelectronics Oh, you did mention a challenge about other popular ICs. Regulated power supply ICs were used everywhere.

@azertyQ 4 года назад

shouldn't changing the resistor (the one attached to the capacitor) also change the time constant?

@jimmyneutron8702 6 месяцев назад

Nah, the capacitor loads the resistor. Anything connected to the capacitor will have the current voltage of the capacitor.

@jj74qformerlyjailbreak3 3 года назад

107 My Favorite Commentator. Juan O Savin ❤️ Good Class Today!!! 👍 😉

@jamest.5001 4 года назад

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!!

@colzilla090 4 года назад

Got me thinking now cd4033be, tc4046bp how about good old lm317t or even 74ls123an

@weerobot 4 года назад

LockDown; Time to Catchup with all Learnelectronics Videos...

@eraldylli 3 года назад

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.

@learnelectronics 3 года назад

Yes, they are ICs as well

@jacobjacob7874 4 года назад

Why does the Capacitor need to wait for the switch to be activated when its attached directly to vcc? I don't get it

@MoeFH 4 года назад

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.

@dreamfly555 3 года назад

@@MoeFH even the switch symbol is wrong.

@protocolfree 4 года назад

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

@learnelectronics 4 года назад

I will look into it

@protocolfree 4 года назад

wow!

@weerobot 4 года назад

More Cool Circuits...

@user-be4yc2vr5c 4 года назад

copacetic indeedly do

@bobweiram6321 Год назад

The LM voltage regulators are more popular.

@PoboyMusic 11 месяцев назад

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.

@learnelectronics 11 месяцев назад

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.

@PoboyMusic 11 месяцев назад

@@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!

@learnelectronics 11 месяцев назад

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.

@PoboyMusic 11 месяцев назад

@learnelectronics ah that's where I was getting confused. I didn't know AC can pass through.

@VK2GPU 4 года назад

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.

@jamest.5001 4 года назад

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!

@melplishka5978 3 года назад

Hahahahaah perfect 10 count lmfao.

@incxxxx 4 года назад

But what for this delay ? Im asking seriously.

@dreamfly555 3 года назад

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.

@williamna5800 4 года назад

I would have liked it, but the likes are 555... thought it fitting.

@alien8r33d 4 года назад

Your schematic is incorrect. The cap is connected directly to V+ in the schematic but is connected after the switch on your breadboard.

@learnelectronics 4 года назад

I put a graphic on the screen saying just that very thing as I was explaining the circuit.

@colzilla090 4 года назад

Atmega328p-pu can do everything 555 can! Just more real estate

@embeddedcastle 4 года назад

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

@colzilla090 4 года назад

@@embeddedcastle i wasn't serious... power on resets are cool too

@colzilla090 4 года назад

@@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?

@dreamfly555 3 года назад

Attiny series mcu are tiny. But 555 can have better power supply flexibility. E.g, can easily used in a car.