13 Threads found on edaboard.com: Schematic sg3525
Seems like sg3525 has drastically reduced its duty cycle.
Maybe you have connected the output to sg3525 feedback pin (IN-) directly (without a voltage divider). That could explain the output voltage (5 V) and the reduced duty ratio (a normal value for such a low output voltage).
Double check the feedback circuit (or post its schematic for (...)
Power Electronics :: 02-26-2015 02:26 :: red_alert :: Replies: 39 :: Views: 1587
I was experimenting a BJT buck converter using a sg3525 in a pretty uncommon configuration (PWM pulses through the VC terminal, outputs connected to the ground).
The schematic diagram is as follow:
The input voltage is 24V, the output voltage is 12V, the intended load current is 10A and the switching frequenc
Power Electronics :: 02-13-2015 15:33 :: red_alert :: Replies: 17 :: Views: 905
The LMD18200 you can find in the Altium Content Vault, the other one you'll have to design yourself. Consult the Altium manual with advice on drawing your own schematic symbol. Then, simply add an existing SOIC-16 or PDIP-16 package to it.
PCB Routing Schematic Layout software and Simulation :: 11-30-2014 14:56 :: ArticCynda :: Replies: 4 :: Views: 1176
Show the schematic diagram of circuit.
Hobby Circuits and Small Projects Problems :: 12-21-2013 18:45 :: andre_teprom :: Replies: 1 :: Views: 548
greetings may be this schematic be helpful HAVENT tried it
Power Electronics :: 12-05-2012 20:28 :: Andrew Lebon :: Replies: 9 :: Views: 1173
For us to help you, we would need you to upload a schematic. That would help us find out where the problem lies.
Microcontrollers :: 01-20-2012 10:44 :: Tahmid :: Replies: 9 :: Views: 1350
I don't have a schematic, but the feedback circuit of your example can basically work. The feedback amplifier should probably have a PI rather than a pure I characteristic for faster response.
Power Electronics :: 07-03-2011 13:15 :: FvM :: Replies: 8 :: Views: 3612
For 800W output its ok an half-bridge with 2xIRFP460 mos-fet's,or STE40NK90ZD super mosfets.
Don't need synchronous rectification for output.Its ok an dual 30A/200V fast recovery diode.
For PMW IC its better an sg3525 IC than TL494.
For schematic check diyaudio forum.You find lots of schematics there.
Power Electronics :: 12-15-2009 10:45 :: adi109cj :: Replies: 4 :: Views: 3088
hi guys, i need some help here
i need to build a buck converter from 12v to 9.6v to supply to a motor.
i must generate pwm using sg3525. i google oledi.
but seems cant find much sg3525 used in buck converter. mostly are for motor control. do any1 have similiar schematic for this?
Power Electronics :: 12-15-2009 04:22 :: bennyben :: Replies: 0 :: Views: 3149
hi guys does anybody know anything about switching type audio amplifier.
actually it modulates the input signal into PWM signal and take it to the output.
the actual question is what tips or tricks are involved and do you know any good schematic?
do you know any circuit that uses sg3525 for it?
Analog Circuit Design :: 05-31-2008 14:48 :: myid123456 :: Replies: 0 :: Views: 732
I don't have a paper, but I went to the ON Semi webiste and in their datasheet you can find the actual oscillator schematic:
See Fig. 7.
So let's try to derive our formula and see which one is correct.
From that figure, we can see that the cap is charged by a constant current, given by the c
Hobby Circuits and Small Projects Problems :: 11-01-2007 12:49 :: VVV :: Replies: 1 :: Views: 3991
Please refere to the data sheet of the IC, This will help you get the basic circuit for the allication. WHat voltage level are you looking at?
Please send spec so that a schematic can be posted. Please alos send power level.
Professional Hardware and Electronics Design :: 12-18-2006 22:08 :: harimelath :: Replies: 4 :: Views: 2362
I have made car amplifier 1x100W 4ohm.The dc/dc converter is made with sg3525 PWM, two buz11 mosfets,torodial ferite trafo.The Amplifier is consist of one pair tranzistors tip35c,tip36c.
I HAVE MADE IT AND IT SOUND PERFECT.Now i need schematic for making dcprotection for speaker.
Here is the schematic and picture
Elementary Electronic Questions :: 06-22-2004 20:37 :: risto80 :: Replies: 7 :: Views: 13137