The core is coated with black plastic. I was checking it up to 5A peak current and it was not saturating (didnt look like).
Should I make another one with green core larger in size ??
Thanks
I'm kind of lost. 5v line is not a winding on the magmap, it's wound on separate core, it's merely a source of AC (all magamps work on AC).the 5v line is one winding on the mag amp and the control line is the second. He only had one winding so it had to be an inductor.
I update this circuit but all mosfet still is died.
I try to test the IR2153 using LED and resistor with change Rt (2M) and Ct (47nf) the frequency aprox 7Hz and all LED lights FLIP-FLOP.
Please advice.View attachment 5549
For operation over 30khz, C1 (C2 on previous schematic) => 0.2-1uF (low ESL, e.g. ceramic), C3 (C6 on previous schematic) => 0.1-0.47 uF (low ESL, e.g. ceramic). Place caps as close to Ir2153 as possible. Do you have a picture of the PCB you used when you have mosfets installed?I update this circuit but all mosfet still is died.
I try to test the IR2153 using LED and resistor with change Rt (2M) and Ct (47nf) the frequency aprox 7Hz and all LED lights FLIP-FLOP.
Thank You for your replay.
Ok, next I will attc picture of the PCB with mosfet installed.
I had updated this schema and the mosfets not die again.
But light of the lamp is very poor and all the mosfet is very hot.
When I measure pin 1 Vcc (IR2153) to ground is 14.8 volt.
But when I measure pin 7 to pin 6 the voltage is 4.8volt and pin 5 to ground the voltage is 5.5volt.
And when I measure between plus and minus source, the voltage is 60volt (before it is 310volt)
Please help. (I'm sorry my english is not good)
Thank You.
View attachment 5567
Here is the picture mosfets installed.
The lamp's light still poor and mosfet very-very hot.
View attachment 5568
Thank You for your replay.
Ok, next I will attc picture of the PCB with mosfet installed.
I had updated this schema and the mosfets not die again.
But light of the lamp is very poor and all the mosfet is very hot.
When I measure pin 1 Vcc (IR2153) to ground is 14.8 volt.
But when I measure pin 7 to pin 6 the voltage is 4.8volt and pin 5 to ground the voltage is 5.5volt.
And when I measure between plus and minus source, the voltage is 60volt (before it is 310volt)
Please help. (I'm sorry my english is not good)
Thank You.
View attachment 5567
Here is the picture mosfets installed.
The lamp's light still poor and mosfet very-very hot.
View attachment 5568
Here is the picture mosfets installed.
The lamp's light still poor and mosfet very-very hot.
View attachment 5568
Square wave 150V peak-to-peak, 0.9 duty cycle equals 135V RMS.2. lamp will not light brightly compared with directly connected to 220 line, because violtage at the lamp only 155v square wave (77v average or less measured with voktmeter)
Can you please attach picture of the bottom side? Do you have an oscilloscope?
anyway, if you are using IRF740 and the switching frequency ~50 kHz, I suggest you to increase gate resistor to 50-100 ohm. BTW Did you install ceramic caps like I mentioned?
Also if you have installed 1k resistors across the gate-source, changed them to 10k or so.