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  • bogdan2011's Avatar
    Today, 04:54 PM
    So then the difference between the two is that in current mode, the current is more important in the equation (basically limiting the maximum...
    2 replies | 22 view(s)
  • Silvio's Avatar
    Today, 08:47 AM
    Silvio replied to a thread Constant current in SMPS in diysmps
    @Bogdan2011 In the chip used if it has a current sense comparator then to lower the current the voltage has to be reduced. There is no way to...
    2 replies | 22 view(s)
  • bogdan2011's Avatar
    11-17-2017, 08:30 PM
    Greetings, I'm building a variable lab power supply and I'm trying to understand how constant current / current feedback works with PWM. I've been...
    2 replies | 22 view(s)
  • dino zoff's Avatar
    11-17-2017, 10:48 AM
    dino zoff commented on blog entry Current transformer calculation in Silvio
    Hi Silvio! Very good article. Simple and condensed very useful information. Tank you so much.
    3 replies | 1022 view(s)
  • Silvio's Avatar
    11-16-2017, 08:50 PM
    @Robson132 Well in theory half bridge is suitable up to 500w but I got 1200 out of a half bridge smps. I think if you use half bridge is well...
    1 replies | 41 view(s)
  • robson132's Avatar
    11-16-2017, 02:34 PM
    Hi. The subject of my engineering work is the design of smps 500W for audio amplifier. I do not know what to choose topology (half vs full bridge)....
    1 replies | 41 view(s)
  • Silvio's Avatar
    11-12-2017, 11:16 PM
    Silvio commented on blog entry Current transformer calculation in Silvio
    An SCR is born as a latching relay when given a pulse to the gate it latches until you will reset again either by switching off the supply or by...
    3 replies | 1022 view(s)
  • Rookiex's Avatar
    11-12-2017, 01:21 PM
    Rookiex commented on blog entry Current transformer calculation in Silvio
    Hello Silvio greetings excellent information do you have any SCR 12 VOLT latching relay circuit warm regards Rookiex
    3 replies | 1022 view(s)
  • Sandy's Avatar
    11-10-2017, 02:03 AM
    Sandy replied to a thread ETD29 Winding Advice Needed in diysmps
    Thanks Silvio, Yes will likely proto up the inverter to see how it will work, but will create the schematic so I can at something to build from,...
    12 replies | 370 view(s)
  • Silvio's Avatar
    11-09-2017, 11:10 PM
    Silvio replied to a thread ETD29 Winding Advice Needed in diysmps
    Hi Sandy. Regarding the transformer primary if using 60Khz then 0,5mm wire is suitable for your trafo as this can go to a maximum of 68Khz. Your...
    12 replies | 370 view(s)
  • Sandy's Avatar
    11-09-2017, 06:39 PM
    Sandy replied to a thread ETD29 Winding Advice Needed in diysmps
    Silvio - It's going to be used for an automotive ignition system (multi-spark CDI). The basic use of the the transformer will be for a DC-DC...
    12 replies | 370 view(s)
  • Silvio's Avatar
    11-08-2017, 01:29 PM
    Silvio replied to a thread ETD29 Winding Advice Needed in diysmps
    One thing you did not mention was the total power of the inverter you are building, perhaps we can help you in the wire size you need. You can tell...
    12 replies | 370 view(s)
  • boriszarkov's Avatar
    11-07-2017, 11:30 PM
    My last picture with project schematic has too low resolution, update it with new.
    1 replies | 115 view(s)
  • boriszarkov's Avatar
    11-07-2017, 02:06 PM
    Hello, I trying to design and build solid state LASER Constant Pulse Power power supply, based on Buck converter topology. The principle of...
    1 replies | 115 view(s)
  • Sandy's Avatar
    11-07-2017, 12:37 AM
    Sandy replied to a thread ETD29 Winding Advice Needed in diysmps
    Thanks for the helpful advice. I did hit up the starting end with a torch, but I didn't do a good enough job cleaning things up as you can see :) I...
    12 replies | 370 view(s)
  • Sandy's Avatar
    11-07-2017, 12:32 AM
    Sandy replied to a thread ETD29 Winding Advice Needed in diysmps
    Don't have any and it's a bit expensive. Will try some at some point but messing with the stuff I have on hand. The thinner strands would be much...
    12 replies | 370 view(s)
  • Silvio's Avatar
    11-06-2017, 07:46 AM
    Silvio replied to a thread ETD29 Winding Advice Needed in diysmps
    1) You could distribute your ends on more pins so windings will fit better or otherwise do not use the pins at all and leave the wire longer then...
    12 replies | 370 view(s)
  • MicrosiM's Avatar
    11-05-2017, 10:51 PM
    You should have used Litz wire
    12 replies | 370 view(s)
  • Sandy's Avatar
    11-05-2017, 07:33 PM
    Sandy replied to a thread ETD29 Winding Advice Needed in diysmps
    First coil done. The winder was really easy to use and the 30 rpm gear motor showed no signs of stalling even with heavy tension. Need to figure...
    12 replies | 370 view(s)
  • Silvio's Avatar
    11-04-2017, 12:40 AM
    BUG fix 1) Diode bridge the pic on the right is the right one. (the middle diodes should not be touching the top trace) 2 R14 is 10K...
    93 replies | 10813 view(s)
  • behrad's Avatar
    11-03-2017, 11:04 PM
    i find 2 mistake in ur schematic 1)in one schematic middle output di ode pins is connected to top but in another schematic not connected to top...
    93 replies | 10813 view(s)
  • Silvio's Avatar
    11-02-2017, 07:31 AM
    For the auxiliary supply power up to 300-500 mA is enough. For the voltage I think 24v will be too much so 12v will have to do. If you want you can...
    93 replies | 10813 view(s)
  • Silvio's Avatar
    11-02-2017, 07:24 AM
    I used a double one because that I had in my junk box. If you have a single contact relay it will do the job just the same as long as it can handle...
    93 replies | 10813 view(s)
  • behrad's Avatar
    11-01-2017, 10:25 PM
    For aux supply i did not find 15 or 18 volt smps adaptor in my local city But i find 24v/1a Can i use it without any problem?
    93 replies | 10813 view(s)
  • behrad's Avatar
    11-01-2017, 08:16 PM
    mr silvio relay 12v/8a is double or single?
    93 replies | 10813 view(s)
  • MicrosiM's Avatar
    11-01-2017, 10:12 AM
    MicrosiM replied to a thread Smps with IR2156 in diysmps
    Its cheapest solutions for the large scale manufacturers, who don't care about reliability, because they have big names in the market. RCF,...
    4 replies | 192 view(s)
  • blasphemy000's Avatar
    10-31-2017, 05:38 PM
    blasphemy000 replied to a thread Smps with IR2156 in diysmps
    The IR2156 is a ballast control IC used for switch-mode control of fluorescent lighting tubes. I did some quick googling and it seems that people do...
    4 replies | 192 view(s)
  • Silvio's Avatar
    10-30-2017, 08:08 PM
    @Leland Ok about the current consumption of the smps so for 800w at 90v your current will be approximately 9 amps You can add a small pcb with the...
    1292 replies | 537337 view(s)
  • leland331's Avatar
    10-30-2017, 06:50 PM
    Thank you for the reply. By the looks of it, the amp will draw 6-800w steady. It won’t increase or decrease. The final voltage will be +45 -45
    1292 replies | 537337 view(s)
  • mikile's Avatar
    10-30-2017, 12:13 PM
    mikile replied to a thread Smps with IR2156 in diysmps
    I have trouble uploading it from my phone..
    4 replies | 192 view(s)
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