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OK.
A different scenario but the same implementation.
The device would have 2 mono inputs from microphones spaced at either side of the stage or a metal block. The device would have a mono output and the a variable control (or 2) that would allow the user to select where on the stage an...
I want to be able to select the signal in a stereo path. It is possible to simply provide a signal selection process using DSP or FFT methods?
I want to have a stereo signal (say an orchestra playing a composition) and be able to input the left and right channels into a processor when I can then...
This is a difficult set-up to understand.
I need to be able to have a seamless changeover from mains supply to battery. Using a 12V battery but without the supply output going above 12V. The battery needs 13.8V to 14.4V to charge properly.
So I need to be able to disconnect the battery while it...
Be careful with using a zener though. The diode is a stabilizer, it conducts when it reaches it's threshold and the excess voltage / current must be dropped by the feed resistor or the diode will burn out. You can drop a lot of power this way if you are not careful.
Another way is to use a...
Yes, there are a certain amount of electrons on an atoms energy level (shell) but there are a complex combination of level loading depending on the atom. https://en.wikipedia.org/wiki/Atomic_electron_configuration_table shows the electron loading really well.
But the functions of the atom are...
Looking at the circuit, you are supplying 5V to the uC so why not use the 5V to supply the LED's too? If your transistors have an on resistance that will give a 1.7V drop, then you do not need resistors (5-3.3=1.7).
A single supply would be cheaper for you. And as you are only turning the LED's...
Simplest way is to reference your analogue ground to a voltage divider of two matched and equal resistors placed across the 5V rail. The junction will give you a virtual ground and allow for a +/- 2.5V input.
Some of the simplest mistakes (and even I have made this one once) is to place too many spaces or underscores in a signal name. The nets look the same, but they never meet.
The other thing to try is to use the global command (/g) on your signal nets.
Ok. Simple question.
What type of FET can be used to act as a switch.
It will have a battery supply on one side that will have between 15V and it's on load terminal voltage of a minimum of 11.5V.
The output side could draw up to 4A.
The control will be such that a 15V turns the switch off and a...
TTL? this is a difference of type and system. USB is a serial communication system, TTL is just logic.
What are you trying to achieve? There are USB to TTL conversion chips that will interface with a serial input on a PIC or similar.
Try looking at the FTDI website for these.
There is nothing you could do on the board as you have it to reduce cost. A combined PCB manufacturer and assembler would reduce your overall cost a little.
If you redesign the board for larger pad to hole ratio or single layer will reduce the cost of the board.
You could find a manufacturer and assembler in one. The pcb would need to be re-designed for a lower quality as relaxed tolerances would lead to non-functioning boards. You did nt specify if the pcb is double sided or multi-layer. FR4 is a defacto standard and will cause serious problems if...
Unfortunately I can not see the sketch and so can not comment.
There was an article in an old electronics magazine that addressed this issue in an old style mini. They used a second battery with a charging diode and a heavy duty relay connected to the ignition switch and supply. This had the...
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