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Thanks hotwaterwizard. I don't suppose you could go into more detail regarding the bootstrap, and ripple rejection? And by looking at the diagrams it looks as though RF is the only component that affects the gain? Then I suppose you would find the capacitor value on pin 2 by calculating the...
I am currently using a lm386 in my project. Although I am not entirely sure what would happen if you change to a 1uF cap unless your talking about the auto gain. It would change the gain level instead of being the 200. As for the resistor and cap on pin five they simple provide a small filtering...
Hello everyone, what i'm looking for is a low voltage (less than three volts) power amplifier chip that can provide enough power to my 8ohm headphone load. I am designing an electronic stethoscope and have a beautiful/filtered signal that just needs a little boost at the output. I was trying to...
I am talking about the output to the headphones. I am making an electronic stethoscope and the headphones will be on the output of a power amplifier. But since I only have one microphone I was wondering about how to connect one single signal line to the headphones (which only have left, right...
Hello, I think this issue depends largly upon the program you are using. I use multisim/ultiboard and I know that if you do NOT include the solder mask in your dxf file you will not have any on your board. Hope this helps. Cheers.
Hello everyone, I was just wondering what is the most efficient way of connection a 16ohm, 200mW earphones to a mono channel. Would I just connect the right and left together then just ground the ground? Any information regarding this would be super. Thanks.
You know chuckey I did find what my problems were. First of all, your right about putting a cap between Vcc and ground AND Vee and ground. It was my noisey power supply getting fed into my gain circuit. And it was at this point I was doing only the analog circuit, nothing to do with the PIC...
This could be possible but I have checked the connections numerous times and the powers and grounds seem to be quite secure. Here is the circuit I am working with. If you have any questions regarding the circuit please ask. Thanks
Hello everyone, I am in my final semester of an electronics technology program and I am building an electronic stethoscope for my project. I found a circuit (by audioguru) and modified it a bit. I incorporated more digital aspects so that more analysis can take place. Anyways, I build my...
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