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How do I produce an analog output from an Arduino Mega and connect it to a PLC's analog input card? PWM and LM6211 Op-amp or arduino module?

simulate this circuit – Schematic created using CircuitLab You can implement a PWM driven constant current sink like this. That allows you to communicate your measured signal mapped from 0-100% ...
MrGerber's user avatar
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Completed Daisy Seed Guitar Pedal

This thread did not get any answer, and I am not sure if the reason is because of lack of interest, or simply because this circuit is fine and will work. I talked to a colleague who is savvy with ...
Arno's user avatar
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Can you sum demodulated signals with a single summing amp, or is it best to demodulate individually then sum together?

If all the circuits are linear, then there is no conceptual difference. There is a big difference in the circuits you have drawn, which is at the level of an oversight or mistake. The lowpass ...
Neil_UK's user avatar
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BQ25570 setting different overvoltage, battery ok and MPPT levels

You could use relays to short or switch the megaohm resistors. In the picture below the resistance between the bq25570 and node A can be switched between 1 and 2 Megaohms. You may want to limit the ...
Hans mitm Flammenwerfer's user avatar
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Attenuating mid-supply biased audio signal before AC coupled audio amplifier

To answer your question : yes there is. First, if there is significant DC on the volume, when you change the volume quickly, the DC component will also change quickly and this can be enough to produce ...
danmcb's user avatar
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DAC used as multiplier

The parameter you are interested in is specified in table 5V AC/DC CHARACTERISTICS of the MCP4921/4922 datasheet. There are two bandwidth rows, indicating values of 450 KHz and 400 KHz. TL;DR Of ...
V.V.T's user avatar
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1 vote

i2S DAC output and Speaker signals

The output is a class D amplifier (H-bridge) so there will be a positive or negative average (over many switching cycles) voltage across the speakers. The longer term average (over many milliseconds) ...
Spehro 'speff' Pefhany's user avatar
2 votes

i2S DAC output and Speaker signals

The link is not to a module but to a chip data sheet. And it does give that information. It's a D-class amplifier chip. Technically, it cannot give out negative voltage which you asked - but that is ...
Justme's user avatar
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ADC/DAC system clock frequency for sampling rate

The table 3 is clear. Use any of the system clocks that make up the 48 kHz sampling rate. The higher system clock you use will still divide automatically down to oversampling mode that allows for the ...
Justme's user avatar
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