RC (logic) Switch in inversion mode

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1

Hi,
I would like help understanding specific behavior of RC Switch in inversion mode.

My context is using 2 RC Switches on same RC channel signal to produce activation two relays (one 0-20%, the other 80-100% duty cycle). I intend to use one of the switches in inversion mode to catch the lower range.

My question is : What is the state of the “OUT” line, in inversion mode without valid PWM signal from the RC receiver? Will we need to “blank” the “OUT” signal (using the “GOOD” output) to avoid activation in the lower range if the RC signal is invalid?

Anybody tried this?

I will appreciate all inputs on this (…with obligatory clamping and ferrites :wink:

Thanks,
Curve514

2

Hello.

To clarify, the RC switches expect a hobby RC servo signal (which is different than a 0-100% duty cycle PWM). The RC switches accept pulse widths of 500-2500 µs at a frequency of 10–330 Hz. Signals outside of this range will be invalid.

When the signal is invalid, the OUT pin will be low (and the MOSFET or relay will be off, if applicable) whether inversion is enabled or not.

Brandon

3

Thank you for your reply, that is exactly what I wanted to know.
Regards,