All Questions
Tagged with ac-dc microcontroller
10
questions
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51
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Verify the correctness of a circuit: AC to DC conversion for Arduino Nano and relays
I need your opinion about the correctness of my circuit. As is shown in the drawing schematic, the circuit is supplied by 220 VAC which will be converted to 12 VDC. This output is used to supply the ...
- 1
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59
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esp32 s2 touch sensor read
I have a problem with capacitive sensor. I have created PCB with 2 capacitive sensors. Everything is working fine and ESP32 s2 mini reading values as I expect while I powering up esp32 with type-c 5v, ...
0
votes
1
answer
147
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Can I power an MCU using a 3.3V AC/DC module converter?
I'm designing a board that will connect to 230V AC. I found some ready to use AC/DC modules that can output 3.3V DC Here's the list from Mouser.
Can I power an MCU directly from this output?. I'm ...
- 2,053
3
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3
answers
2k
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How to power two ESP-01S chips from 220 V AC [closed]
I would like to supply power for two ESP-01S microcontroller chips. I am a beginner with such kind of circuits. There are some constraints:
The only available power source is 220 V AC, so I need an ...
- 748
2
votes
4
answers
187
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How do I (safely) arrange power for circuit from AC
I'm a CompE guy, so there's a lot about the power side of my field that I'm a little unsure about. I've been working on a project involving an MSP430 microcontroller and I'm at the stage in ...
- 41
1
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1
answer
40
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Power for 1 Device, 1 MCU, and 2 modules
I have four things I need to get power to. The first is a device that needs 48V and 30W. The other three include an MCU and two modules. Each have various pins that need either 3.3V or 1.2V. I’ve ...
- 11
1
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2
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878
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Power drop on AC-DC converter due to relay
A uController circuit is powered with an AC-DC converter. This circuit in turn acts on some relays to turn on and off some loads. We have two bi-stable relays and another simple relay (Omron G5DN-1A) ....
- 11
2
votes
1
answer
768
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AC-DC converter (230V - 5V) supply for microcontroller to control outlet
I have built a circuit using a PBO-3-S5, AC-DC circuit and applied some necessary components. iIn the description and when testing the circuit I get a 4.8V output voltage which should be enough to ...
- 29
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votes
2
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159
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How is this device getting low voltage?
I've opened up a Lutron dinner, and I'm trying to understand how the microprocessor gets its DC voltage. With my limited knowledge I'm not seeing an AC/DC converter. I've attached pictures, can ...
- 135
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Converting 100mV AC to 1V DC
Hey guys I am looking for a circuit where I can convert 100mV AC to 1V DC and then feed it to my microcontroller's ADC pin. Can any one suggest any circuit to achieve this?
I want to interface a ...
