in this article, I’m going to explain the 500-watt dc to an ac inverter circuit and PCB layout. this is a simple and power inverter based on ATEX transformer ( you can get this from old SMPS of the computer ). the main advantage of this circuit is the size, the very small-sized inverter can provide up to 1000 watts ( maximum peak watts ). Check the inverter making video here
using this power inverter you can run drilling machines, mobile charger, mixi, ( recommended to not use electronic devices because it producing high frequency )
You may also check:
Components list
- SG3525 ic ———————1
- ei33 transformer ( rewinded ) ——1
- 3300 uf capacitor——–1
- 330uf 200v capacitor——–2
- Irf3205 mosfet —–4
- 1k resistor—– 2
- 200k resistor ——- 2
- 330k resistor———1
- 104pf———2
- 10k preset pot ( bed type )—–1
- 4.7 uf 63v capacitor——1
- 10k resistor ——–2
- 10nf capacitor——-1
- 470 nf capacitor——1
About the transformer used in the circuit
The transformer used is from ATEX. EI33 transformer and I rewinded the transformer ( the video of rewinding is available on my youtube channel. The primary coil of 3 + 3 turns and 90 turns on the secondary coil.
500 watts inverter circuit diagram
Working
the inverter is a High-frequency inverter that means the inverter circuit produces about 20-50 kHz frequency. so we need o use the atex transformer to get the output. the atex transformer is a high-frequency transformer it will only working on high-frequency input signals. the high frequency produced by the SG3525 ic and the signal can be amplified by the four IRF3205 MOSFETs. Use a minimum of 12 v 8-ampere transformer.
Caution: this circuit only designed for educational purpose any kind of illegal activities i am not responsible. and this circuit produces high voltage power supply so be careful when doing testing.
Is it pwm controlled with feedback I mean can this circuit stabilize the voltage at the output on load and battery drop volts
It can able to stabilize, for more accurate you need to integrate the overload protection in it
The components list is not complete, there are some components on the PCB layout that are not on the components list please give me the complete components please
Is this a pure sine wave or modified sine wave, and what types of diod did you use there and theirs numbers
Hi,Your switching freq is 14Khz. According to formula (Bmax=Vin*10^8 / 4*f*Npri*Ae) maximum flux density will be 6002 gauss! that exceeded the acceptable value for this type of ferrite core(It must be about 2000) and cause the core to saturate.You should increase the freq(to more than 50khz) to decrease Bmax if you don’t want to change number of winding turn.Thanks.
I don’t follow the mathematical equations
Just need to change 10k resistor (Connected to pin 6) to 2.7k
What is the transformer winding wire gauge?
21 IN PRIMARY AND 23 IN SECONDARY
I used 110v winding in transformer . but after rectifying I am getting 300 vdc . How can I get 110vdc .
reduce the number of turns in the transformer secondary winding or change the circuit and include a feedback system to control the output voltage
I want to drive brake coil having 220vdc 3 amps , can I do that with this circuit
yah sure it will delivers upto 500 watts you can easily drive the coil
I want to drive a brake coil with 220vdc 3 amps can i do that with this circuit .
If we use bike’s 12v battery how many hours it will give backup
thats based on the amout of output power you are consuming
Is there a simple background diagram about invertors and generateers for dummies that you can recommend?
Check out the PCB layout image
Check the PCB layout image then you will get the complete idea about the components