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Thank you for your interest. But this product is not available in my country. So I need to make sure it's really him, because I can only get it from abroad..
There is nothing wrong with the LM1117-3.3 regulator, I measured it. But I don't have the oscilloscope.
Believe me, if I can find a product that I can use instead, I never want to deal with repair. However, this product is used in a boat and can broadcast from a distance of more than 300 meters...
Like you said, probably the transistor is faulty, but I didn't get any results from what's written on it.
What can I do about it? How can I tell what kind of transistor it is?
Hello. I have a circuit that uses a 433 MHz transceiver to transmit data remotely. The transmitter is powered by 12v and the transmitter has a 20cm long antenna. However, when I forget to attach an antenna, unfortunately the transmitter cannot be used at long range as before, possibly the...
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