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Hi,
I have a product that is been used in the field for years. I received a complaints from a customer who is using our products in the boats and the customer said the product does not work. When I examined the product I found that on the power supply (3W flyback converter) the secondary output...
Thank you all for replying.
Yes it is just DC supply. My gate drive level is 0V for case mosfet on and 3.3V for off.
I want to inform you all Mosfet is not really heating much while TFT draws 460mA. It is lower than 40 C. And I tried to divide current by adding one more mosfet as parallel...
Hello!
I have a problem with driving P channel mosfet.
I am trying to control power voltage of a TFT. As you can see below when TFT_Power_EN signal is low I expect there would be 3.3V at the Drain of the mosfet which is labeled as TFT Power. But when I check the signal it is just 2.5V
I...
That is expected then.. So how can I get rid of this opposite output voltage? Since signal is like this my output voltage increase about 300V. And that is not acceptable in my case..
Actually I don't have much experience in power electronics but I googled and some people say just use full...
Hello everyone!
I am trying to remake an inverter which previously designed with IPM. I redesign it with mosfets instead of IPM and I use push-pull topology. I change PWM pulse width while reading the input voltage of the inverter (Such as if input voltage is 60V mosfet is on for 3.5msn-this is...
Hello Klaus,
Thanks for reply, I cut the board just like you said but it seems that is not the problem cause nothing has changed. When I don't use mic amplifier circuit and directly connect microphone to GSM module there is not any problem. So I think problem is because of the amplifier circuit...
Hello
I work on an Emergency call project which makes people be enable to communicate with a call center in an emergency case. I uploaded my PCB and schematic.
In the schematic Mic Amplifier Ts971 is supplied by Vcc 3.3V but since I noticed I was trying to amplify it more than it was capable...
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