Good as allways. Thank you. My knowledge on the AC side is not the best. Phase correction (cos phi) of the AC side for switching power supply would be nice.
I don't understand why Diac is used, is Diac used because for it's breakdown voltage properties or for it's bidirectional AC current flow properties? Why is Diac used on Triac's gate terminal? I can never understand why the Diac is needed, seems like it is used for it's 32 volt breakdown voltage only.
The TRIAC is primarily used for its switching properties (much like a MOSFET or BJT) and the DIAC is primarily used for its breakover voltage (much like a MOSFET's Gate or a BJT's Base). The DIAC's role is to "wait" for the capacitor to reach the DIAC's breakover voltage, then turns the TRIAC "on" by giving current to its terminal. Since the TRIAC acts as a switch, without the DIAC, nothing would trigger it ON with a delay. If you bypass the DIAC (or remove it) and short the TRIAC's terminal directly to the capacitor, the TRIAC will *always* be ON because the there is no DIAC breakover voltage to delay its switching, hence no dimming effect. The circuit requires *both* components to have bidirectional properties since it is powered through AC--i.e. the current periodically flows forwards and backwards through both components--although the TRIAC and DIAC would function the same way in either case.
@@dimdit00 that makes sense, so the DIAC is used for the delay switching properties, I wished other people have mentioned this, I could never figure out what the true purpose of the DIAC was.
Yes, certain step down converters use this method. It may damage universal motors or switching power supplies, because depending on when/how the power is switched on the sine wave, you may have short pulses of 220v which can cause damage.
Who ever came up with this system is a genius :D!
love to hear your voice and get more knowledge at the same time. love it...
lovely voice and more knowledge thank you mem........
It multiplies the electricity voltage, it's usable for adjusting the voltage.
Can you please explain circuit for electronic fluorescent starter with its DIY version.
Good as allways. Thank you. My knowledge on the AC side is not the best. Phase correction (cos phi) of the AC side for switching power supply would be nice.
Helpful video. I like it
Very nice vedio, thanks for information
How meny wath sir please can dis dimar usd bt316 transistor
That was a great explanation. Thank you.
how to make 100A Or 20000 watt dimmer
Very well explained...thank you!!
Interesting! I always wondered how a DIAC works.
Same! The answer was in my face the whole time! XD
when you spin the wheel, what is spinning inside the mechanism?
Pretty interesting!!! 😮
I don't understand why Diac is used, is Diac used because for it's breakdown voltage properties or for it's bidirectional AC current flow properties? Why is Diac used on Triac's gate terminal? I can never understand why the Diac is needed, seems like it is used for it's 32 volt breakdown voltage only.
The TRIAC is primarily used for its switching properties (much like a MOSFET or BJT) and the DIAC is primarily used for its breakover voltage (much like a MOSFET's Gate or a BJT's Base). The DIAC's role is to "wait" for the capacitor to reach the DIAC's breakover voltage, then turns the TRIAC "on" by giving current to its terminal. Since the TRIAC acts as a switch, without the DIAC, nothing would trigger it ON with a delay. If you bypass the DIAC (or remove it) and short the TRIAC's terminal directly to the capacitor, the TRIAC will *always* be ON because the there is no DIAC breakover voltage to delay its switching, hence no dimming effect.
The circuit requires *both* components to have bidirectional properties since it is powered through AC--i.e. the current periodically flows forwards and backwards through both components--although the TRIAC and DIAC would function the same way in either case.
@@dimdit00 that makes sense, so the DIAC is used for the delay switching properties, I wished other people have mentioned this, I could never figure out what the true purpose of the DIAC was.
It lack noise suppression filter
Can this be used to make a DC variable transformerless supply? What kind of drawbacks would it have?
That's a very interesting idea! Have you tried it?
Lovely.
Don‘t you give away your gerber files to reproduce your circuits to community? That would be great! Thanks for your videos. Boris🇨🇭
Is there any way that it may not create humming noise in the fan?
increase capacitance
Lol I am watching this after it is uploaded 13 seconds ago
Can you do a vfd please
Hi, please tell me the part number of the SCR(screw type)
Thank's keep up👍
hello, I would need to decrease the output of a transformer by a few volts. Is it possible to connect a dimmer between 220 V and the transformer?
sure
Can we make it for input 230V and variable 120-130V maximum? And what changes are to be made to do it?
yes, use variable resistor to replace R1, use another variable resistor R3 to parallel R2, then adjust R1 and R3 to reach your goal
@@ttstar3840 will definitely try it. Thank you 😊
Other quest can we see kasyan personal how are you
Hi can we use it a step down for 110v tool instead of down transform
Yes, certain step down converters use this method. It may damage universal motors or switching power supplies, because depending on when/how the power is switched on the sine wave, you may have short pulses of 220v which can cause damage.
Is this BT136?
Nope bta16
@@sayantanmaiti2513 thanks, but I have also create a dimmer circuit with BT136 Triacs. And it works very well.
Sourav Chakraborty it will work too..bta16 support higher currents than bt136
Dats a bta41
@@sayantanmaiti2513 yes