Hi guys
My English is not good hope you will understand
I want to build a smps for car amplifiers ..i've seen many circuit .. there are simple smps that dont use any ic only transistors ie S9014 and a pair of mosfet and that is a simple one but i dont know its maximum power i will attach some diagram then any one with idea that how much power i can get from that.
Second
I've seen some diagram with even 4 mosfet...is the number of mosfet define how much power you can get ?
There is a simple diagram but with only 180w capacity it use two MOSFET...can i add mosfet in parralel to double the power ...because there is the diagram that use 4 MOSFET with 350w capacity
My English is not good hope you will understand
I want to build a smps for car amplifiers ..i've seen many circuit .. there are simple smps that dont use any ic only transistors ie S9014 and a pair of mosfet and that is a simple one but i dont know its maximum power i will attach some diagram then any one with idea that how much power i can get from that.
Second
I've seen some diagram with even 4 mosfet...is the number of mosfet define how much power you can get ?
There is a simple diagram but with only 180w capacity it use two MOSFET...can i add mosfet in parralel to double the power ...because there is the diagram that use 4 MOSFET with 350w capacity
Attachments
That diy circuit dont use any ic its schematic diagram is there ...its real a working circuit but i dont know how much power i can pull from that ...
The self-oscillating circuit isn't practical for high power. You will have huge copper losses with that many turns. Most amps use 4+4 on the primary.
If you're going to buy a core instead of salvaging one, make sure that you use the right type of core. Inductor cores are different from transformer cores. I typically used P-material cores. F-material is another option. Some of the forum members with design experience may be able to offer other suggestions.
Magnetics - F Material
Magnetics - P Material
CWS Bytemark has cores:
Ferrite Toroidal Cores : Coil Winding Specialist, Inc.
If you're going to buy a core instead of salvaging one, make sure that you use the right type of core. Inductor cores are different from transformer cores. I typically used P-material cores. F-material is another option. Some of the forum members with design experience may be able to offer other suggestions.
Magnetics - F Material
Magnetics - P Material
CWS Bytemark has cores:
Ferrite Toroidal Cores : Coil Winding Specialist, Inc.
And i've seen 8 turns on secondary for 30v but that circuit on secondary you have wind 60 turns for 30v
If you want to get 350 watts, the 24+24 primary design isn't practical. Why do you want to use 24+24?
Have You tried a computer PSU ? Mine is rated 600W.
You just have to short PG wire (usually green) to ground and put a resistor or an HDD as load for starting it.
You just have to short PG wire (usually green) to ground and put a resistor or an HDD as load for starting it.
How can i increase a power of that first diagram that use ic TL494..with schematic it only supply 180w
Without more information about the amplifier section, the load you intend to drive...
It's difficult to make specific suggestions but, in general, you add more FETs, use larger copper/wire on the transformer (and inductors, if used).
See attached.
It's difficult to make specific suggestions but, in general, you add more FETs, use larger copper/wire on the transformer (and inductors, if used).
See attached.