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Topic: generating a -10v...+10v control signal from an arduino (Read 4 times) previous topic - next topic

Grumpy_Mike

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Why aren't you asleep? It's 5:30 AM in the UK!

Yes that is what I would like to know as well but for me this time.

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You could've really impressed us all by omitting that

Yes though of that but opted for honesty, so never make a politician will I?

Jonnym

Hi Guys,

Me again...

I'm confused at where the RC filter would be connected in the circuit. If I was switching a transistor with one of the pwm pins, the transistor is allowing the path to ground. Is the RC filter on the collector side or the emitter side? (thinking this is an NPN)

There is a path to ground via the capacitor, is the high freq. stuff is going this route? and that's the whole point...

thanks
Jon


Grumpy_Mike

No that is totally wrong.
Collector to pull up resistor to +12V.
Collector to filter resistor. Other end of resistor to capacitor to ground and also to one of the inputs of your controller.
You need two of these circuits one for each input. You also need a common ground.

Jonnym

...and base ?  is this shown correctly?

..and emitter?.. is this show correctly?

..and load?.. is this shown correctly?

cheers.

Grumpy_Mike

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.and base ?  is this shown correctly?

Yes
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and emitter?.. is this show correctly?

Yes
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and load?.. is this shown correctly?

No.
See previous answer.

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