Wow. Best explanation of Darlington pair and how and why they are used. Young engineers take notes. This instructor is giving you more information than you probably realize.
Awesome video. I've never seen such a crystal clear explanation before!
10 วันที่ผ่านมา +5
The 2 extra Darlington resistors exist to switch off each transistor faster by discharging the charge present by the capacitance across the base-emitter, but at the expense of a slight increase in power consumption.
Very helpful, experiment with a simple oscillator circuits, found through trial and error that the Darlington array works well, now I know why. No calculations or formula's, Just have learned what will work and what will not, try it and fry it, burn and learn, Thanks for the information.
I personally prefere the Sziklai (mixed npn/pnp) configuration, because it is more like a single transistor as it has only one base emitter voltage drop. This is particularly important for audio power output stages to get more voltage swing from lower operating voltages. The transistor providing the base determines the npn or pnp behavior. For switching purposes I prefer MOSFETs because you can get a powerful nMOS device with low Ron (
@jyvben1520 not really. Most MOSFETS can be switched with gate voltages lower than 3 to 4 V. I currently use a MOSFET which can deliver a drain current of 2 A at a gate voltage of 1.2 V and a SD voltage of 0.25 V. I drive it with a 3 V microcontroller output and it reaches almost its final Rdson. At 5 V it is completely open. The advantage is that it needs no gate current an can deliver 5 A with just 0.1 V ds voltage. So its power dissipation is only 500 mW. In the switching state you need only a few mA to provide the gate charge of 20 pC within a few micro seconds.
Hello! Thanks for your videos, I am confused a little - why resistor power is 1.8 Watts? (You mention it at 9:27). I thought that P = UI, so 10V * 1.8A = 18 Watts.
Wow. Best explanation of Darlington pair and how and why they are used. Young engineers take notes. This instructor is giving you more information than you probably realize.
As an EE already familiar with this subject, this is a very nice explanation for those not yet familiar with the Darlington configuration.
😎👍✅
Excellent presentation and explanation. Thanks a lot. You've taken me back to my military days in the early 70's ! Colin ( England )
Awesome video. I've never seen such a crystal clear explanation before!
The 2 extra Darlington resistors exist to switch off each transistor faster by discharging the charge present by the capacitance across the base-emitter, but at the expense of a slight increase in power consumption.
Great explanation, a lot of questions answered!
Nice example of where a Darlington pair is useful. Thanks!
Amazing explanation as usual, professor!
Very helpful, experiment with a simple oscillator circuits, found through trial and error that the Darlington array works well, now I know why. No calculations or formula's, Just have learned what will work and what will not, try it and fry it, burn and learn, Thanks for the information.
Thanks! Great lesson.
I personally prefere the Sziklai (mixed npn/pnp) configuration, because it is more like a single transistor as it has only one base emitter voltage drop. This is particularly important for audio power output stages to get more voltage swing from lower operating voltages. The transistor providing the base determines the npn or pnp behavior.
For switching purposes I prefer MOSFETs because you can get a powerful nMOS device with low Ron (
good price, don't mosfets need a higher voltage, microprocessor would need a transistor to switch the mosfet on/off ?
@jyvben1520 not really. Most MOSFETS can be switched with gate voltages lower than 3 to 4 V. I currently use a MOSFET which can deliver a drain current of 2 A at a gate voltage of 1.2 V and a SD voltage of 0.25 V. I drive it with a 3 V microcontroller output and it reaches almost its final Rdson. At 5 V it is completely open.
The advantage is that it needs no gate current an can deliver 5 A with just 0.1 V ds voltage. So its power dissipation is only 500 mW. In the switching state you need only a few mA to provide the gate charge of 20 pC within a few micro seconds.
Is Darlington circuit dead? The MOSFETs have replaced the need for the high gain transistors with much better performances.
MOSFETS and BJTs have their strengths in different applications. Darlington transistors live on.
@rcatv7750 I. What applications would you use Darlington over MOSFETs?
@ Linear audio power amps.
@@rcatv7750Then the question is what are the drawbacks of using MOSFET in audio power amps?
Great video, again!
Very interesting and useful. Thanks a lot.
Can we have a hybrid similar configuration with a fet and bjt
Just wondering if this is applicable to running 2 white leds and a 270 ohm resistor to the collector and a 3.3k ohm to the base and ESP32 pin?
Very helpful. Thanks!
thank you sir
Hello! Thanks for your videos, I am confused a little - why resistor power is 1.8 Watts? (You mention it at 9:27). I thought that P = UI, so 10V * 1.8A = 18 Watts.
1.8 Watts is the dissipation in the transistor. 1.8A*1V.
The rest is the power is dissipated in the load. 1.8A * 9V or 16.2 Watts
Reupload?
seems like it, ive watched it on friday
This was a good one
Thank you very much 👍
Do you have any recommended books to read over to understand how placement of components affect behavior of a circuit?
It's called an engineering degree
@6:20 I see one too!
👏👏🔝
I approve.
De ja vue)
After 5 months
use a mosfet
True. But , what he's doing is rather instructive too. Electrical and Electronics engineering is a vast and very fascinating field.
@joeblowe7545 that's true.
It is interesting that I have noticed many cases where a darlington pair is used to switch a mosfet?!