What does 3V3 or 1V8 mean? - Electrical Engineering Stack Exchange
Mar 14, 2012 · While reading a datasheet for an IC I came across the pin voltages being presented as 3V3 or 1V8. What does this representation stand for?
Chain MOSFETs to drive high voltage / high power signal from 3V3 …
Apr 24, 2022 · The MCU outputs 3V3 signals. I have tested the IRBL8721 Power MOSFET and also the IRFZ44 (without the microcontroller) at a variety of gate voltages and they both carry the load just …
arduino - Driving 5V powered relay module from 3V3 powered ...
Jul 21, 2020 · What I'm trying to do This question is about the use of any 3V3 supply microcontroller to drive 5V powered relay modules which are available from many suppliers. I have provided details …
How to switch "best" between two voltage sources (5V & 3V3) for a ...
Apr 6, 2021 · How to switch best between two voltage sources (5V & 3V3) for a "load" (e.g. a sensor in the application field or Arduino/Raspberry Pi/etc.). The basic setup is as follows: there are two …
Circuit for 12V relay with an optocoupler using 3V3 GPIO
Feb 4, 2022 · I am trying to design a circuit to control a G6S-2 12V relay that powers on/off a 12V device using a GPIO from an ESP32-WROVER and one PC817 optocoupler. This is the circuit that I have …
decoupling capacitor - Electrical Engineering Stack Exchange
May 13, 2024 · When I try to power it from 3V3-Battery pin using a very reliable power supply (Keithley Model 2231A-Triple-channel DC Power Supply) the board doesn't work fine and Matter doesn't work …
Unidirectional logic shifting (3V3 to 1V8) with minimum components?
Jul 2, 2020 · I'd like to do this using an RPi but since it runs at 3.3V I am hesitant to tie it directly to one of the GPIOs as I don't know if the device is 3v3 tolerant. Ideally, I could have used a logic shifter but …
Raspberry Pi Pico 3.3V_EN pin control voltage inquiry
Jun 22, 2021 · The Raspberry Pi Pico seems to have a 3.3V_EN pin which is basically the 3.3V regulator enable pin (3V3_EN) pulled up to 5V through a 100K resistor internally. I am confused how …
At what point should I switch between a resistor divider and a LDO?
Would it be possible to run this MCU using a resistor divider circuit wherein the 3V3 is converted into 1V8? My MCU sinks 142 µA/MHz at 3V and runs at 24MHz making 3,408 mA at 3V. (5,68mA @ …
Use of VCC and GND pins on programming headers
Feb 1, 2022 · In a recent project of mine using an ESP32 and a CC1352, I noticed that on both programming headers there are 3V3 and GND pins, which are, I suppose, to power the device if you …