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5

The circle denotes that the pin is of type Active Low. https://en.wikipedia.org/wiki/Logic_level#Active_state tells that it is also indicated by a trailing #


5

Check the datasheet. TEMP(Pin 1) :Temperature Sense Input Connecting TEMP pin to NTC thermistor’s output in Lithium ion battery pack. If TEMP pin’s voltage is below 45% or above 80% of supply voltage VIN for more than 0.15S, this means that battery’s temperature is too high or too low, charging is suspended. The temperature sense function can be disabled by ...


2

Tsin(aT+b) cannot be integrated from T=minus infinity, because the integral function contains summed term Tcos(aT+b). It doesn't get eliminated. It's undefined (as a limit value) at T=minus infinite. So, the formula of x(t) doesn't define a function. The starting point is impossible and the rest is meaningless. It's possible that by applying different ...


2

That solution of using opto-coupler wouldn't work for your problem if "linearity" matters in your system. The input resistance of SINK and MONITOR seems quite high enough, but their input capacitance might have caused the problem of delayed rising. Anyway, your problem most likely will be solved if you use an Analog Buffer (which is linear). The ...


2

I assume you want to transfer a sinus signal. The same circuit may be used for low and higher frequencies, but you may need a different transformer rated for the used frequency. The maximum transferable power is proportional to the core weight of the transformer and to the used frequency. The same transformer used for 400 Hz instead of 50 Hz may transfer 8 ...


2

Starlink doesn't use WiFi, so you won't be able to capture WiFi from it. If you had the right antenna and electronics (which you certainly do not given the cost), you could see the RF signal. You wouldn't be able to decode it however. If you want to do amateur radio, there are lots of lower frequencies being used on ground and in orbit. These are much more ...


1

Your idea has technical, legal and possibly other important aspects. First, Starlink is not WiFi. I am yet to see their technical specs, but given the completely different task, spatial arrangement and business model, they use different frequency bands, probably different modulation schemes and probably different access protocol as well. Your high-gain ...


1

Surely it is possible to build an antenna for it, as they must have built antennas if they are selling them. However, what makes you think the satellite system even uses WiFi signaling? Most likely it does not, so by combining a WiFi base station with a satellite dish, it will not be possible to communicate with the system in any level. So without ...


1

You can intercept the downlink signals if you like, but they won't be of any use to you since they will either be for other subscribers or encrypted or both. Even ordinary Wifi is encrypted, so it is likely that Starlink will be. Details on how it works are sparse, but I imagine they won't accept transmissions from you without a paying subscription, and a ...


1

Option 1: Apply 45 V to the DC arm of the tee instead of of 30 V. You'll have to adjust this value if the duty cycle of the pulsed input is not 50%. Option 2: Add a diode to the DC arm like so: Note: the output of this circuit could drop, depending how it is loaded.


1

In Bluetooth, each device has a unique 48-bit address (see IEEE 802.15.1 standard). DWM1001 is an IEEE 802.15.4-2011 UWB compliant device. The addressing scheme of IEEE 802.15.4-compliant devices is more elaborate; depending on frame type, 64-bit (full) and 16-bit (short) addresses may be indicated in MAC header address fields. You can see it for yourself in ...


1

So I figured it out. First of all its not related to the pull-up. My signal when HIGH is 3.60v and when LOW is 1.23v, also my Vin is 4.73v (laptop). As the datasheet mentions, "If TEMP pin’s voltage is below 45% or above 80% of supply voltage VIN". 1.23 of 4.73 is 26% (which is below 45% and the chip turns off) and 3.60 of 4.73 is 76%~ (which is ...


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