Posts by Olin Lathrop
When the switch is ON the transceiver will be active No, it's the other way around. First, you should be able to see the bar over SHDN in the datasheet. That means negative logic, where low is a...
Andy already gave you a direct answer, but I want to point out a confusion: Is the maximum swing is 2.4V when operated from 3.3V Supply. Maximum output voltage and maximum output swing are not th...
The labels on your expected frequency response graph and the schematic of what you simulated are too small to see, so I can only answer with general observations. The Analog Devices schematic show...
WiFi or cell phone signals are way too fast for you to hear individual dits and dahs, and they don't use that kind of encoding anyway. What you are hearing is the carrier from a local ham radio op...
When placing traces on this ground plane, is it better to Keep them as tightly packed as possible, grouping them into a concentrated "island" within the ground pour (Image 1)? Space them out slig...
Partial answer awaiting more specs Your question can't really be answered until we know how accurate the resulting solenoid drive levels need to be relative to the 0-10 V input signals, and how fa...
I stopped trying to read your equations after the second undefined term. In general, start analyzing such things assuming switches, diodes, and the like are ideal. Also consider continuous and di...
The first thing I noticed is that all your circuits use separate resistors to convert the current of each side to a voltage. That will cause a differential mode error signal to the extent the resi...
Yes, we should add how to use MathJax to the help for this site. Unfortunately, there are several things that work against getting this done: The Codidact help system sucks! When we first starte...
Feeding the watchdog from an interrupt service routine is indeed a bad idea, usually. It depends on what you are really trying to protect against. The purpose of a hardware watchdog is usually to...
Yes, that should work. Each sensor is then dumping a current related to its measurement onto a single common wire. Basically, the sensor outputs are summed because currents add. 10 m shouldn't b...
It all depends on what is connected between the main board and this "hat" board. Your schematic doesn't show any of these connections, so we can't really tell. In the end, the high current loop s...
I'm going to guess that by "PT100" you mean a positive coefficient temperature sensor with a nominal resistance of 100 Ω at 0°C or 25°C. Whatever it is you mean, it should be in your question. Th...
Read the datasheet and do the math. On page 3 of the datasheet we find that the guaranteed high and low threshold voltages for the PS/SYNC input are 1.4 and 0.4 V, and its maximum input current is...
You need something with very low on-state voltage drop. That effectively means some type of FET. Those look resistive when on, as opposed to a voltage source like a BJT does. You need to look ca...
200 HP is 147.1 kW. At 480 V, it takes 306 A to transfer that much power. You didn't say, but your 480 V power feed is probably three-phase, and the motor is three-phase too. I don't remember ho...
is it possible that moving around laptop antennas does not change the specifications drastically, because, for example, the antennas are low-power The radiated power is probably not low compared t...
I see that Nick has already provided a good answer to R5, so I'll only address this: Furthermore, an amplifier symbol called "gm" is labeled as transconductor. What does it do? What you show is a...
The section you quoted says: "by injecting a small amount of current into the ground". With a solid ground connection, the voltage on their ground pin shouldn't change no matter what current is in...
First, note this only applies when the line to the input power source is long enough to have significant inductance. If the power source is on the same circuit board, then this isn't an issue. Th...
What should the firmware do when it detects that VBUS (re)appeared? What should the firmware do when VBUS has disappeared? I'm not familiar with the STM32 USB library, and have only dealt with th...
Personally I wouldn't want another category (what you seem to mean by "section"). I also don't think this should be a code review site. However, asking for validation and advice on small and spec...
As an alternative to doing the math, as detailed in Andy's answer, you can use a graphical aid called a Smith chart: These were used routinely before computers to match transmitters to antennas. ...
Before we get into your problem, there are a few things to say about your descriptions. You need to step back and think about what we know and don't know, then learn to communicate specifications ...
First, draw schematics properly when you ask others to look at them. Your right to left flow is rather annoying. There are two main possibilities for this circuit to cause noise, the inductor and ...
