Why RC oscillators are used for generating below 1MHz frequencies, and LC oscillators for above 1MHz freqs? Why cant we use RC for high freqs, and LC for low-medium freqs?
The ACS712 outputs a voltage from 0-5V and the ESP32 ADC reads from 0 to 3.3V using 1.1V as vref. There is a voltage divider already to reduce the 5V to 3.3 range.The problem is: voltage drops on the ...
Hi all. The output frequency of this power supply is 20-100kHz. Since its DC out, which would be 0Hz, am I correct to assume that the 20-100kHz would be caused by the switching. So I could in theory u...
Can I connect a 0.5W Speaker direct to an input (Raspberry pi in my case) and expect it to be as loud as a let's say a phone speaker? Will a very small speaker work directly from an input? If not ...
Hi all, my mini USB connector somehow broke off the board and has been rattling around its casing, I opened it up and found where its supposed to be connected, is this saveable? could I just solder th...
I'm expecting to see the state of a pin that I'm reading to pull low for maybe 50 us and then back up to high. The original code running on an UNO/Nano code looks about like this:while ((...
I'm doing a Sanitiser dispenser with an Ultrasonic Sensor. For every alternate sensing of the hand, I'm getting a brief disturbance signal from the relay. It goes on for a few milliseconds and...
The speed of the PMSM is controlled by varying the frequency of the three phase signals that go to the motor windings, but the BLDC motor’s speed is controlled by varying the voltage amplitude. Why is...
