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electronzapdotcom
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Добавлен 7 сен 2015
Patreon www.patreon.com/electronzap
Links that help me make learning electronics videos are below.
List of my videos ruclips.net/user/electronzapvideos
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electronzap.com/
www.reddit.com/r/ElectronicsStudy/
Links that help me make learning electronics videos are below.
List of my videos ruclips.net/user/electronzapvideos
www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you.
electronzap.com/
www.reddit.com/r/ElectronicsStudy/
PNP BJT version of 8V4 circuit shuts off at approx 6V2
List of my videos ruclips.net/user/electronzapvideos
www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos.
www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you.
electronzap.com/
www.reddit.com/r/ElectronicsStudy/
#Electronics #Howto #diy
www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos.
www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you.
electronzap.com/
www.reddit.com/r/ElectronicsStudy/
#Electronics #Howto #diy
Просмотров: 47
Видео
8V4 max voltage shuts off at about 6V2 circuit using NPN BJT and Zener diode
Просмотров 13317 часов назад
List of my videos ruclips.net/user/electronzapvideos www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos. www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you. electronzap.com/ www.reddit.com/r/ElectronicsStu...
NPN BJT based NOT Logic Gate demo circuit using 2N3904 Bipolar Junction Transistor
Просмотров 1422 часа назад
List of my videos ruclips.net/user/electronzapvideos www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos. www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you. electronzap.com/ www.reddit.com/r/ElectronicsStu...
Digital Buffer made by combining two NOT Logic Gate Inverters
Просмотров 1742 часа назад
List of my videos ruclips.net/user/electronzapvideos www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos. www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you. electronzap.com/ www.reddit.com/r/ElectronicsStu...
How to use 74HC14 Schmitt Trigger Hex NOT Logic Gate IC
Просмотров 1834 часа назад
List of my videos ruclips.net/user/electronzapvideos www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos. www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you. electronzap.com/ www.reddit.com/r/ElectronicsStu...
How to use 74HC04 HEX NOT Logic Gate Integrated Circuit
Просмотров 1694 часа назад
List of my videos ruclips.net/user/electronzapvideos www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos. www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you. electronzap.com/ www.reddit.com/r/ElectronicsStu...
NPN BJT based AND Logic Gate demonstration circuit
Просмотров 1277 часов назад
List of my videos ruclips.net/user/electronzapvideos www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos. www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you. electronzap.com/ www.reddit.com/r/ElectronicsStu...
AND Logic Gate demonstration circuit
Просмотров 1307 часов назад
List of my videos ruclips.net/user/electronzapvideos www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos. www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you. electronzap.com/ www.reddit.com/r/ElectronicsStu...
How to find N Channel JFET Idss and making an easy Current Source
Просмотров 1459 часов назад
List of my videos ruclips.net/user/electronzapvideos www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos. www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you. electronzap.com/ www.reddit.com/r/ElectronicsStu...
Adjustable NPN BJT Current Source demo circuit using 2N3904 Bipolar Junction Transistor
Просмотров 1649 часов назад
List of my videos ruclips.net/user/electronzapvideos www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos. www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you. electronzap.com/ www.reddit.com/r/ElectronicsStu...
Light Sets 555 Output High until it is Reset to Low
Просмотров 17912 часов назад
List of my videos ruclips.net/user/electronzapvideos www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos. www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you. electronzap.com/ www.reddit.com/r/ElectronicsStu...
LED Fade Off Circuit using NPN BJT 2N3904 Bipolar Junction Transistor
Просмотров 20712 часов назад
List of my videos ruclips.net/user/electronzapvideos www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos. www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you. electronzap.com/ www.reddit.com/r/ElectronicsStu...
Darkness turns on nightlight LED using NPN BJT and LDR Light Dependent Resistor
Просмотров 19214 часов назад
List of my videos ruclips.net/user/electronzapvideos www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos. www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you. electronzap.com/ www.reddit.com/r/ElectronicsStu...
Trimpot Voltage BJT Amplified with cascading PNP and NPN Bipolar Junction Transistors
Просмотров 16414 часов назад
List of my videos ruclips.net/user/electronzapvideos www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos. www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you. electronzap.com/ www.reddit.com/r/ElectronicsStu...
NPN BJT Emitter Follower powers a load at slightly less voltage than set by Trimpot
Просмотров 15916 часов назад
List of my videos ruclips.net/user/electronzapvideos www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos. www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you. electronzap.com/ www.reddit.com/r/ElectronicsStu...
10mA Current Source Circuit using NPN BJT 2N3904 and 5V6 Zener Diode
Просмотров 32616 часов назад
10mA Current Source Circuit using NPN BJT 2N3904 and 5V6 Zener Diode
Op amp split virtual ground to simulate a dual power supply demo circuit
Просмотров 24919 часов назад
Op amp split virtual ground to simulate a dual power supply demo circuit
Backwards NPN BJT will fail at higher voltages with diagram
Просмотров 15619 часов назад
Backwards NPN BJT will fail at higher voltages with diagram
Green LED when voltage is high enough and red when voltage is too low demo circuit
Просмотров 31521 час назад
Green LED when voltage is high enough and red when voltage is too low demo circuit
P Channel Enhancement Mode MOSFET Switch circuit using BS250
Просмотров 183День назад
P Channel Enhancement Mode MOSFET Switch circuit using BS250
N Channel Enhancement MOSFET Switch circuit using 2N7000
Просмотров 164День назад
N Channel Enhancement MOSFET Switch circuit using 2N7000
NPN BJT needed when 555 supply voltage is too low demo circuit
Просмотров 163День назад
NPN BJT needed when 555 supply voltage is too low demo circuit
Bonus video Bright LED module Light when dark 2N2907 PNP BJT controlled by LDR at 555 reset pin
Просмотров 115День назад
Bonus video Bright LED module Light when dark 2N2907 PNP BJT controlled by LDR at 555 reset pin
Light holds 555 output high using reset pin LDR voltage divider demo circuit
Просмотров 108День назад
Light holds 555 output high using reset pin LDR voltage divider demo circuit
Light sets 555 timer output low using Reset pin LDR voltage divider demo circuit
Просмотров 162День назад
Light sets 555 timer output low using Reset pin LDR voltage divider demo circuit
Semi Adjustable LDR Op Amp light level switch LM358 Light Dependent Resistor
Просмотров 142День назад
Semi Adjustable LDR Op Amp light level switch LM358 Light Dependent Resistor
How to use electronics adjustable power supply quick introduction
Просмотров 121День назад
How to use electronics adjustable power supply quick introduction
LDR controlled Astable 555 timer using Light Dependent Resistor
Просмотров 119День назад
LDR controlled Astable 555 timer using Light Dependent Resistor
Light Turns On Buzzer using PNP BJT and LDR with 2N3906 Bipolar Junction Transistor
Просмотров 11314 дней назад
Light Turns On Buzzer using PNP BJT and LDR with 2N3906 Bipolar Junction Transistor
Gotta keep those breadboard power supplies from getting fried, I'll be making a couple of these for my breadboard setups. This is really helpful, I didn't know exactly where to fuse or what the fuse Amperage should be. Thanks!
Glad to hear, thanks for watching!
Thanks @electronzap it's great that you talk us through these circuits. You make a great teacher and your time is greatly appreciated. Glad you keep this channel going. Great work, please keep it up!
Glad to hear, thanks for watching!
Another great video... Do you plan on getting into counters and memory in the future?
I've done some counter videos. I don't have any ideas of how to talk about memory at the moment. That'll probably only come up if I am working on a project that uses memory.
Interesting demonstration video!
Thanks for watching!
Could you replace one of the resistors in the 555 timer with a potentiometer to evenly vary the speed? If so, which one?
The 555 timing resistors and capacitor are close to fully adjustable. Just want to make sure there's always resistance between the + supply and the discharge pin for the full supply voltage. And if you use low resistance between capacitor and discharge pin, then you want to use a low value capacitor so there's not a lot of current when it discharges instantly. If a potentiometer can be set too low, then you want a fixed resistor of minimum value in series with it.
Your videos are perfect! Thank you for putting these out
Thanks for watching!
There’s a lot Counterfeits out there. Be careful.
Yeah, I just buy cheap ICs so far, so I'm sure lots of them are counterfeits. Some day I plan to buy some IC from a trusted supplier, and compare them to low priced Ebay versions.
@@Electronzap DigiKey in the list of trusted?
NICE VIDEO!! Yes, If both the LED's are on while hooked to the same HC output, they are oscillating. It would be very interesting to see how a decoupling cap (TAN. 0.1uF), connected to the power and gnd pins of the IC (on your breadboard) would effect this 'critical' region'. Back in the day (decade) when I was designing PCB's, I would place the decouple caps UNDER the IC (it was in a socket) so I could get the leads as short as possible. Many times this cap is absolutely critical.... the fact that they always made the power and gnd pins of these IC's as far away apart as possible (diagonally), is still a mystery to me. Also,another odd thing...I zapped a couple cmos chips while using a wrist grounding strap!! It turned out that the IC was at a high static potential and the surge of current to ground zapped it. The solution was to always have the ic in conductive GROUNDED foam...I vividly remember some pretty significant electrical shocks when I touched the conductive foam grounded to earth. I keep about a square foot of foam attached to my bench directly running to the green wire!
Good info, thanks for sharing! I do not remember ever knowing when I fried an IC, they just stopped working, and when I swapped it with the backup IC, it worked. I do know that I took no precautions at all when first using CMOS ICs to see if they actually fry as easily as people say. I handle the 555 timers and LM358 op amp ICs a lot without precautions and I don't remember damaging any of them unless I dropped one and accidently stepped on it. Now I try to always discharge myself before touching CMOS ICs, and I think doing so is saving a lot of them. Each one of these videos is another experiment to see how delicate they are. If these videos do well, I plan to buy a bunch of ICs from whatever supplier has the best reputation, and comparing them to the discount ones that are available.
Thanks for all the videos …. I took electronics in high school 40 years ago and I’ve forgotten so much of it ….im currently trying to relearn and learn how these IC’s work … most videos on RUclips explain from a advanced level I’ll catch up eventually
Thanks for watching! I took all the electronics classes available in High School about 30 years ago, and got back into electronics about 10 years ago. So I know how that goes.
Thanks for watching! I took all the electronics classes available in High School about 30 years ago, and got back into electronics about 10 years ago. So I know how that goes.
Simulating with 9V when the potentiometer is set at 2.78k/7.22k is when the inversion (flip) occurs.
Thanks for the info!
thank you sir for all
Thanks for watching!
Hi there! I'm totally new to using this device. My dad was an electrical wizard and had probably every device or tool you can think of, but now that he has passed away I'm trying to use his things to troubleshoot issues I have around my house. Please bear with me as I'm not well versed in these things! Currently my dishwasher is on the fritz; it will not turn on but I wanted to further diagnose the issue before buying random parts or a whole new dishwasher. I saw a video about how to test the voltage coming from the black and white wires underneath the dishwasher, and the video said the voltage should be 120 v. When I use my oscilloscope (the exact model you have in your video), I get a reading of 0.108 v. Am I supposed to ignore the decimal?? Your device looks like mine when nothing is happening (reading 0.000 v), but I see yours changes to 04.98 v when you tested voltage (the decimal place moved). Am I doing something wrong, or is my reading indicating that I have an issue with the breaker?? Thank you in advance!
Thanks for watching! 120V is probably AC, so make sure it is measuring AC instead of DC. AC will probably average out to 0V if the meter is displaying it as DC. Oscilloscope is for measuring rapidly changing voltages more than simple voltages. I'd use a multimeter with an AC voltage setting, or a voltmeter to measure most appliances. I don't have any tips for adjusting oscilloscope settings, I just kind of try things out until I get good settings for what I am measuring.
@@Electronzap Ah! Yeah, AC vs DC would make a difference 🤦♀Definitely looking into a multimeter, this thing is a bit advanced for my needs. Thank you very much!
Can you please answer my questions to my project?😢😢😢
What will be the values of the 2 resistors if 12v is supplied to the 2 transistors rather 5v, and also 12v to the supply side of the LED?? Because I currently have the same project... In place of LED, I will put 12V 756 ohm resistance relay. And in place of 2n3904, I will use BC547.
With 12V circuit I usually use at least 1,000 ohm resistors if they are 1/4W.
@@Electronzap so can I use bc547?
@@Electronzap1000 ohm or 100, 000 ohm for 12v circuit???? Because in your 5v, you use 10,000 ohm resistors. Now, I'm confused 🤔🤔🤔
@@tnamen1307 For 12V you can up to 50k for both.
I don’t see a (AND )IC that would cause this circuit to act this way ….i’m just seeing 2 switches in a series circuit
Logic gates come in many forms. It helped me to see switch and transistor versions, so I show them as well as the IC version. Thanks for the comment!
@@Electronzap oh ok it was an example of how it works
List of my videos ruclips.net/user/electronzapvideos www.youtube.com/@Electronzap/community for most of the diagrams I've used in my videos. www.amazon.com/shop/electronzapdotcom As an Amazon Associate I earn from qualifying purchases. Americans should check out one or more of those links before making any purchases. There's no extra cost to you. electronzap.com/ www.reddit.com/r/ElectronicsStudy/
Scheme is a bit confusing without dot's where exist connection.
Thanks for the info!
Understanding current sources can be a current source of frustration! 😅
Indeed!
Cheers !
Thanks for watching Andy!
Well Done. Great Video
Thanks for watching!
It took me too long to realize that the ceiling hadn't been painted to look like the sky.
Indeed.
Helpful, thanks
Glad to hear, thanks for watching
Thanks for another great video!! I had exactly the same problem of the BB buttons popping out. I just cut off a bit of the tips and soldered some solid lead..just enough so the switch still sits flat and the wire goes deep...problem gone!
Good tip!
Thank You
Thanks for watching!
Could you have solar panel walls and capture some of the energy used in lighting indoor homes?
When I was a kid, it was common to come across calculators that had solar cells to power the calculator under lamp light. I don't know how effective larger panels are at collecting indoor light, but you should be able to if you really wanted to. I'd only seriously invest in something like that if I was also planning on setting it outdoors if the power went out or something. The Indoor light might keep batteries fully charged after being charged if they are not being used much. Maybe just use them daily to charge a cell phone or something. I'd test it out with smaller cells like these, or another low priced setup, and see if they can keep a portable power bank charged before trying to go larger.
This video brought something back to mind: (I needed LIGHT=ON... reverse polarity from your circuit and PNP...I would have to find the schema to be sure) I remember with a circuit...it turns out that if you 'very carefully' place the LDR in the correct proximity with the LED, the 'leakage light' from the LED can give a sort of POSITIVE FEEDBACK to the LDR and cause the LED to snap-on much faster...avoiding that slow turn-on area. I tried several variations of this, but finally got it to work....depends much on the brightness of the LED. It looks like you are using a low-brightness LED though, IIRC mine was green or blue...the color made a difference.
Yeah, practical circuit would need to shield the LDR from the LED.
You have never explained about this. Can you explain this??? Why the input switch is always kept at the base side?? Can not it be keep at the power side of the collector with base and emitter keeping constant??? Or, can not it be kept at the emitter side with base and collector side constant??? Please explain.
the diode passes X volts, not blocks
Thanks for the info!
Nice demo. The op-amp output can source or sink current, so when you flip the switch all you're doing is changing where the ground is. Not an actual dual power supply, but a good way to simulate it with an op-amp.
Good stuff
Thanks for watching!
I may have run across another way to get an a/c signal from a 555 timer through a mosfet IRF530N powered off the rail @ 5V. I'm pretty sure anyway (being "green" and all :-)
There's a number of ways to get current flowing both directions in a circuit. Capacitors have current going one way when they charge, and the other way while they discharge.
Love it.
Glad to hear, thanks for watching!
Thank you
Thanks for watching!
Interesting information! Excellent video!
Thanks for watching!
You don't get the recognition that you should. Thoroughly understanding the basics is paramount. Good job.
Thanks for watching!
Sir. After supercapacitor charged fully still it is connected in charger circuit will it damage the supercapacitor
As with all electronics, pushing the maximum voltage a lot might shorten it's life, but capacitors shouldn't be affected by being charged for a long time. It's a bigger problem if a polarized capacitor is completely discharged.
Why we connect the emitters of both?is it not that we get the output from collector point ...be it npn or pnp? Am I missing something?
wow thats almost identical to the first thing i ever built which was a 12v indicator for a car battery, used a 741 opamp and a standard diode for the zener so one side of the opamp was held at 0.6v and the variable side was set similar, way back in 1977 lol, we fitted it into my grandads vauxhall viva (uk car) was always good to see the red and green led on together when we got in the car, then it would go red as the car was cranking to start and then to green when started and the alternator started to charge the battery. I cant remember if it had any feedback to make a bigger dead spot / hysteresis in the middle region. makes me want to build a new one lol
Very cool :)
GREAT VIDEO!!...those caps are so important! One thing I do with the T0-220 package, when used on a breadboard, is twist (not bend) the pins 90 degrees with needle-nose pliers so that they don't permanently damage the board-contact strips when inserted.
That sounds like a good tip. Thanks for watching!
Thanks for this useful tutorial! 😊
Thanks for watching!
Would this work if I have a square wave 0-5v signal that I need to output inverted from input signal. So as sensor outputs 0v I need it up converted to 5v and when sensor output 5v I need it down converted to ~0v? It’s a crank position sensor so it switches relatively quickly back and forth.
I think so.
It’s interesting to play with MOSFETs. I noticed once that if you turn it on, and leave the gate floating, the LED will stay on. I wonder if you could make a video on that?
I show that in many of my videos. It's not guaranteed to stay on for any amount of time, but it tends to stay on or off a long time with a floating gate.
just wanted to say thanks! still learning and this helped
Thanks for watching!
very good and informative use of the 555 🙂
Glad to hear, thanks for watching!
Btw, when searching for "battery switching module" on Amazon, almost all results use this relay, and many use *two* of it as if it's "single throw". Can you guess why?!
Do you think if this relay is reliable for a 5A AC motor with an inrush current of 15-20A for only 1-2 seconds?
I don't think so, I'd see what companies use to switch something like that and compare it.
@@Electronzap Appreciate it 🙏 I've noticed a higher current version on the module XH-W1209 which is advertised for heaters up to 15-20A on Alibaba btw, but not sure if it's really up to the task :)
@@Electronzap I just saw ruclips.net/video/KzR7EtPM15E/видео.html and I think it actually looks sturdy enough to do the job since I've opened the motor and the contact plates within it looked about the same caliber.
I am glad I do not go to those places
Thanks for watching!
@@Electronzap you are welcome
They are on Amazon but everything is in Chinese so unless you can get it translated , it’s a guessing game.
Indeed.