I am a King in recovering components on broken electronic materials. You, Kasyan, are a real Queen on ideas on how to reuse those components, making me test the great pleasure of DIY. Thanks a lot for these circuits. Furthermore, you are a genius (without flattery nor exaggeration!) in your explanations and descriptions. You will really "finish" me (!) when you make a video on "How to build small Volt or Ampere Display, using 7-segment display, without programming, without Arduino, WITH COMMON ICs" (can't get the IC7106-7107 in my country). I have tons of those 7-segments from VTRs, TVs, VCDs, etc. So, want to "finish" me, yes or yes??? Smile, please, for serotonin generation in your immune system... ABEGA FOUDA.
Hello Kasyan , here is greeting from China. The most valuable reform to a computer power supply is to convert it to an adjustable power supply. I had successfully made two of them , one is a 22years old 230w AT power supply to a 0-20v 0-8A PSU with CC adjustable , the other is a 13years old 300w ATX PSU to a 0-48v 0-10A@28v 7A@40v PSU without CC adjustment. they are working stable as they were reformed from rearranging the original IC ,components and logics on the original circuit board in the original chassis.
sry dudes, these jobs needn't draw diagrams first or later. every model of PSU is different and there is no universal schematic for every cases isn't it?
Oh great i was sad cause the chokes and inductors wouldn’t come off the boards and i ending up ripping off one of their legs. But this video has shown me thats fine i will need to rewire them anyway. Ive broken i think 2 inducers and 1 choke so far. But im glad I didnt throw them away.
I don't know if the author of this video will be reading responses this long after posting but the second point I mention is a common and potentially costly misunderstanding about MOSFET control. The first thought is that for the electronic relay design it would be a good idea to include a longlife battery for the gate control voltage as the current drawn is negligible so it will last for its shelf life. Two PP3-s perhaps for 18v. Reason it's advisable is that as designer you've little control over the stability or voltage of the controlled voltage and this removes one of the impacts. Secondly, for gate control of a MOSFET you do not need a limiting resistor and for more rapid switching designs it's quite important to not have one. The reason is that the gate of a MOSFET is effectively insulated from the rest of the device, its impedance is 10s or 100s of megohms; HOWEVER, it has a capacitance which needs to be charged before the gate voltage rises sufficiently to turn the circuit on. Mosfet gate capacitances are tiny and for infrequent switching they are not especially important but you still don't want any resistance in series. The reason it's critical for frequent switching is that as the gate charges the mosfet slowly switches on. Now, while off there is no current and so the device stays cold. When it is switched (fully) on there is no voltage drop and the device stays cold - as was demonstrated - HOWEVER while the gate capacitance is charging (or discharging), the current is part way to full and the voltage is well above zero, so for all the period of changeover significant power is being dissipated between Source & Drain. Given you're often talking tens of amps this slow rise (and fall) adds up to quite a chunk of energy every time the switch changes state. For the application shown the switchover is only infrequent so this problem is not nearly as critical but there is still no point having a series gate resistance, it is totally unnecessary and causes ONLY a disadvantage.
the 2nd circuit technically is NOT eternal because the doping of the semiconductor materials involved is a forced state that will revert it self given enough time or heat through diffusion... but it WILL last VERY long also it could take a switch to be turned off more conviniently
Hey Kasyan . can you make pwm generator using tl494 chip that can control the Frequency and duty cycle ... and this chip you can find it in old power supplies like the one you shown .
Usually you can find high power diodes in to220 case and MOSFETs, then the core and plastic case from the high frequency transformer can be usefull. The rest is just not worth it because it is either broken or just cheaper to buy new.. Aliexpress is you friend
The computer power supply maximum voltage is 12V. Your 14.4V motor might work on such a lower voltage but I doubt that the 18V motor will respond unless you add a boost converter module to the 12V output
The voltage value doesn't really matter unless you really want your motor to spin at full speed. However, you should make sure that your power supply can output enough current since those large DC motors found in drills are incredibly powerful for their size. If you have the power rating of your motors, you can calculate the rated current by dividing the power by the rated voltage. Then you will have an idea of how much current the motor draws at a constant speed. It will, however, always draw a lot more current when starting up so be careful and make sure your electrical contacts are decent. As a precaution, you might want to add a flyback diode in antiparallel with your motor. If you doubt your power supply can provide enough current, add a power resistor in series with the motor but make sure it doesn't overheat.
If your PSU can supply sufficient amount of current, it is easy to pimp up voltage. Basically changing a resistor will do. There is a small IC inside that is responsible for voltage level - TL494. There are a tons of videos about conversion like this. Search "Variable power supply", "bench power supply", "adjustable power supply" and so. Always load (with a couple of hundred mAmps) the controlled branch. Even she has a video :-)
As if I needed an excuse to hoard every only component board I find, at least now I'm simply beginning to see what can be done with electronics "scrap"
Don't You Wanna Be Friends with a Virus Carrier? Even before I heard that part, I thot there was something really wrong. Lots of Scary Stuff on the Internet!
Yup, the "wanna be youtube friends?" bot, it's a spam account trying to make a single video on another account appear popular. It has a playlist named "Uploads" to deceive you into thinking and watching that one video. Show no interest in their account, and report it as spam. UA-camr channel owners should delete comments like that the instant they see them.
The 2nd with the opto isolator chip is an ideal towbar-wiring circuit for piggybacking rear indicators etc. on a vehicle so as not to disturb the on-board computer ... hardly what I would call nonsense.. 😒
I love the recovery of materials and the transformation of useless objects into something that can serve. This is a fantastic channel!
I am a King in recovering components on broken electronic materials. You, Kasyan, are a real Queen on ideas on how to reuse those components, making me test the great pleasure of DIY. Thanks a lot for these circuits. Furthermore, you are a genius (without flattery nor exaggeration!) in your explanations and descriptions. You will really "finish" me (!) when you make a video on "How to build small Volt or Ampere Display, using 7-segment display, without programming, without Arduino, WITH COMMON ICs" (can't get the IC7106-7107 in my country).
I have tons of those 7-segments from VTRs, TVs, VCDs, etc.
So, want to "finish" me, yes or yes??? Smile, please, for serotonin generation in your immune system... ABEGA FOUDA.
Hello Kasyan , here is greeting from China.
The most valuable reform to a computer power supply is to convert it to an adjustable power supply.
I had successfully made two of them , one is a 22years old 230w AT power supply to a 0-20v 0-8A PSU with CC adjustable ,
the other is a 13years old 300w ATX PSU to a 0-48v 0-10A@28v 7A@40v PSU without CC adjustment.
they are working stable as they were reformed from rearranging the original IC ,components and logics on the original circuit board in the original chassis.
Please send a Diagram to this conversion! I had thought similar,.but am not an expert, but a beginner. Thank You, New Friend!
Hi sir please give circuit diagram 😊
sry dudes, these jobs needn't draw diagrams first or later.
every model of PSU is different and there is no universal schematic for every cases isn't it?
i'm gonna report you to xi jinping for bypassing the firewall😈😈
Great video, I love the winding motor tester, very clever circuit. And also this serie of recycling parts is very interessing, keep going !
Showed this to my wife and said this is why I collect the things I do. Since then she never said anything about what I collect.
Great video, I am grateful you the way you explain the circuits. Especially the last soft start circuit that uses the Q, not Q comparitor.
Very nice tutorial on reusing old power supplies
Oh great i was sad cause the chokes and inductors wouldn’t come off the boards and i ending up ripping off one of their legs. But this video has shown me thats fine i will need to rewire them anyway. Ive broken i think 2 inducers and 1 choke so far. But im glad I didnt throw them away.
I don't know if the author of this video will be reading responses this long after posting but the second point I mention is a common and potentially costly misunderstanding about MOSFET control.
The first thought is that for the electronic relay design it would be a good idea to include a longlife battery for the gate control voltage as the current drawn is negligible so it will last for its shelf life. Two PP3-s perhaps for 18v. Reason it's advisable is that as designer you've little control over the stability or voltage of the controlled voltage and this removes one of the impacts.
Secondly, for gate control of a MOSFET you do not need a limiting resistor and for more rapid switching designs it's quite important to not have one. The reason is that the gate of a MOSFET is effectively insulated from the rest of the device, its impedance is 10s or 100s of megohms; HOWEVER, it has a capacitance which needs to be charged before the gate voltage rises sufficiently to turn the circuit on.
Mosfet gate capacitances are tiny and for infrequent switching they are not especially important but you still don't want any resistance in series. The reason it's critical for frequent switching is that as the gate charges the mosfet slowly switches on. Now, while off there is no current and so the device stays cold. When it is switched (fully) on there is no voltage drop and the device stays cold - as was demonstrated - HOWEVER while the gate capacitance is charging (or discharging), the current is part way to full and the voltage is well above zero, so for all the period of changeover significant power is being dissipated between Source & Drain.
Given you're often talking tens of amps this slow rise (and fall) adds up to quite a chunk of energy every time the switch changes state.
For the application shown the switchover is only infrequent so this problem is not nearly as critical but there is still no point having a series gate resistance, it is totally unnecessary and causes ONLY a disadvantage.
Outstanding and mind blowing❤
that short circuit detector was class..
Very useful projects..
Absolutely fantastic vid well done 👍🏻🇬🇧
I just love your videos💝
1:17 wow this is interesting diagnostic circuit
the 2nd circuit technically is NOT eternal because the doping of the semiconductor materials involved is a forced state that will revert it self given enough time or heat through diffusion... but it WILL last VERY long
also it could take a switch to be turned off more conviniently
6:39 What a great diagram!
Wow woman in tech who is very technical oriented.
@J C It's 99.99% white men wisdom. I really appreciate, and envy :+), their ability.I am a Thai manfrom South East Asia.
Its a russian dude. The translator who makes the voice overs is woman
@@revolution5547 oh thanx
Great Work as always!!!
i need that first tester
Helpful video 👍
What about using the parts of the computer PSU as a 100W Class D amplifier
0:25 is that short circuit(over current) protection?
How is power on this power supply??
Witch wire use in jump please model PDP117P compaq
Wow, this video been of great help. Connects a lots of 'dots' :)
9:14 this is half story for smooth star big resistor are also needed to start load first
Hey Kasyan . can you make pwm generator using tl494 chip that can control the Frequency and duty cycle ... and this chip you can find it in old power supplies like the one you shown .
GREAT VIDEO
GRACIAS
Great video
Usually you can find high power diodes in to220 case and MOSFETs, then the core and plastic case from the high frequency transformer can be usefull. The rest is just not worth it because it is either broken or just cheaper to buy new.. Aliexpress is you friend
True. Although you can save time if you need it immediately.
I have two electric motors from old cordless drills. A 14.4 volt and an 18 volt. How can I power these from a power supply?
The computer power supply maximum voltage is 12V. Your 14.4V motor might work on such a lower voltage but I doubt that the 18V motor will respond unless you add a boost converter module to the 12V output
The voltage value doesn't really matter unless you really want your motor to spin at full speed. However, you should make sure that your power supply can output enough current since those large DC motors found in drills are incredibly powerful for their size. If you have the power rating of your motors, you can calculate the rated current by dividing the power by the rated voltage. Then you will have an idea of how much current the motor draws at a constant speed. It will, however, always draw a lot more current when starting up so be careful and make sure your electrical contacts are decent. As a precaution, you might want to add a flyback diode in antiparallel with your motor.
If you doubt your power supply can provide enough current, add a power resistor in series with the motor but make sure it doesn't overheat.
If your PSU can supply sufficient amount of current, it is easy to pimp up voltage. Basically changing a resistor will do. There is a small IC inside that is responsible for voltage level - TL494. There are a tons of videos about conversion like this. Search "Variable power supply", "bench power supply", "adjustable power supply" and so. Always load (with a couple of hundred mAmps) the controlled branch.
Even she has a video :-)
I want to use transformers to magnify my solar power supply.
Basically make 12v - 220v.
Is this possible?
u should design a bms pcb fro scratch and give a download link so that we can print it from pcbway
As if I needed an excuse to hoard every only component board I find, at least now I'm simply beginning to see what can be done with electronics "scrap"
I want to isolate Bluetooth and d class amp because of noise
I have 2-3 burnt smps can i make something with it ??
How can I make a benchtop power supply
I cannot believe this short circuit detector
Could you make "hot tweezers" soldering ?
HELLO I NEED TO MAKE 2 WIRE PHOTOCELL 220V 1A LIGHT CONTROL TO REPLACE LIGHT SWITCH FOR OUTSIDE LIGHTS. ANY IDEA?
do not respond to the guy that says "wanna be friends?" down at the bottom
Don't You Wanna Be Friends with a Virus Carrier? Even before I heard that part, I thot there was something really wrong.
Lots of Scary Stuff on the Internet!
Skinet! !!
Yup, the "wanna be youtube friends?" bot, it's a spam account trying to make a single video on another account appear popular.
It has a playlist named "Uploads" to deceive you into thinking and watching that one video.
Show no interest in their account, and report it as spam.
UA-camr channel owners should delete comments like that the instant they see them.
well - build more power supplies!
Hello sir are you winding amplifier transformer please
Make Controller Motor Eletric Bike 36 volts.
Link does not work.
don't LED/sensor (in the optocoupler) degrade with time ?
Yes, but I believe it depends a lot on how much current you run through the led. In general LEDs become more dim over time.
Your final circuit is missing a current limiting resistor into pin 4 of the quad comparator.
Could you send me circuit of bad armature detector presented in video i cant open this from link!!!!!
Молодец, на международный ровень выходишь :) А чем озвучивал?
Gran video una lastima que este en inglés
👍
rat hay ban!
Mans hands , womans voice - strange!
Text to speech or voiceover, video author is Russian
yeah also in russian he sounds more masculine
The first cct is amazing though I doubt it's accuracy and efficiency but the latter two r mere nonsense ...likes
The 2nd with the opto isolator chip is an ideal towbar-wiring circuit for piggybacking rear indicators etc. on a vehicle so as not to disturb the on-board computer ... hardly what I would call nonsense.. 😒
First
This monotonous pronunciation and robotic voice, which also imitates Yankee slang, is driving me insane!