Here is a simple soft start which was needed to power up my large toroidial transformer (2KW). The transformer induces a large surge on switch on and at times it was tripping my 32 amp MCB. However...
need help or guidance to solve if possible, its about SRC and PRC
Hi, can anybody help me calculate the values of a snubber needed for the primary winding of a half bridge smps?
At the moment I have 680pf 1kv with a series resistor of 150 ohms at 3watts but its...
My first reply was lost so I hope this makes sense re-written from memory!
The major difference is in distribution of ripple currents and
I did several tests in LT spice and determined that using two film caps vs. using one in series made no difference in performance. The transformer was
Good you are familiar with LTspice, a very useful tool. Then I suggest you throw a short on the output just as the high side starts conducting and see
I'm actually thinking of using a LM7815 to regulate the auxilliary winding. I figure based on the MOSFET gate resistance plus an external gate resistance
What is going to regulate your auxiliary supply? what about voltage fluctuations? I believe you are using an IR2110 after the SG3525 to drive your fets.
Thanks for the recognition!
It is my understanding that the two coupling capacitors on the half bridge will keep flux walking in
I've been thinking on the circuit for a bit and came up with a startup circuit similar in nature that uses one less transistor (actually only one mosfet).
According to my schematic regarding the constant current source in 350w smps based on borysgo2 here is a better explanation
1) input bulk caps seems ok for the power needed
2) output caps I would go for something with a bit more capacitance like 1500-2000 total would
Hello today i`m build new smps with ir2153, this schematic and pcb files are from forosdeelectronica and credits go to mniclauo. This smps was up and...
I am currently in the planning/designing phase of building a Switch-Mode TIG welder and I have some questions. Before anybody asks,...
I am a third year Electrical Engineering student. I am interested in designing and building my first smps and figured this would be the...
Hi fellas, I am building a smps based on Ludo 3232 but with a different arrangement. I would like to take some comments about the arrangement of the...
Here's my d3k amp.It sound's good.No hiss or noise in speaker.Output DC max +/-15mV
It use separated and isolated gate drive which is recommended...
input voltage: 190-265 VAC
output voltage 1: 2X35v 4 amp symetric
output voltage 2: 2x12v 500ma symetric
I need an SMPS adapter with the above...