All Questions
31
questions
0
votes
0
answers
21
views
How should I come up with a power supply for 5 motors, one micro-controller (ESP32) and one microprocessor (Jetson Nano) for an object sorting arm
I am trying to design a power supply for a robotic arm with 5 servo motors(2 are MG90S and 3 1501MG motors). I'm planning to use an ESP32 microcontroller and Jetson Nano.
I have the option of using ...
0
votes
1
answer
81
views
DC appliances running on AC system [duplicate]
How do DC ran appliances work in an AC electrical system? For example, a house runs on AC, but the microwave runs on DC. How exactly is AC converted to DC? Does that DC power then have to invert back ...
- 21
0
votes
1
answer
74
views
Why is there 120VAC 60Hz when probing a barrel jack on the DC side with the ground reference being the outlet?
I noticed that there is an AC signal on the DC side of the barrel jack. on the casing and the internal male probe. When I touch my oscilloscope probe to the + or - of the barrel jack with the ground ...
- 123
18
votes
3
answers
5k
views
Does this AC to DC + breadboard setup have the ability to kill/severely hurt me?
I'm currently building a PC peripheral that uses an AC to DC converter to power a set of DC fans. I'm not a trained EE or electrician, so I want to make sure I'm not putting myself a risk with this ...
- 285
0
votes
1
answer
168
views
Can I combine batteries and a transformer to power a device at same time? [duplicate]
Particularly i want to buy this smart lock tuya X2 (dont know if exactly the same of the link, just for reference) link and a I want to get the more possible rid of the preoccupation of getting ...
- 11
1
vote
3
answers
799
views
How can I reuse an AC speaker amplifier board with DC?
I'm planning to reuse this board powering it with a computer 12V DC power supply.
It gets 9V AC 200mA from its own 220V AC transformer.
I have basic understanding of electronics, so I've been ...
0
votes
1
answer
304
views
12V AC to 12V DC converter to power an Arduino and some WS2812B 5050 LEDs
I am looking to convert 12V AC to 12V DC to power an Arduino through the VIN pin. The Arduino will be mounted on a PCB through header pins, please see below.
This is the board I have at the moment.
I ...
- 65
0
votes
2
answers
2k
views
Positive and negative rail for op amp circuit
I need a positive and negative rail to power an op amp
Since it's an op amp for a voltage reference, would using a circuit like this one be enough?
Input voltage is unregulated 37 volts, with 4.7k ...
- 17
0
votes
3
answers
3k
views
Discrete linear voltage regulator
I am trying to make a discrete component linear power supply. This schematic seemingly works but it doesn't work when I build it on my breadboard.
I am taking 110 volts through a transformer down to ...
- 17
1
vote
2
answers
666
views
AC/DC Converters in Series with the Same AC Source
Would it be safe to connect two identical AC/DC converters in series if they share the same AC source? My concern is that the negative DC output is grounded somewhere in the converters causing the ...
- 145
1
vote
1
answer
439
views
(230v)AC-DC(12v) wall adapter flashes when connected to dc to dc buck converter [closed]
So I used a common 230vAC to 12vDc (1AMP) wall adapter with dc jack like this
and converted to 5v using a dc to dc buck converter same as based on lm2596s
But the adapter LED starts blinking (...
- 123
1
vote
1
answer
11k
views
Is it safe to use a 19V DC adapter for a 12V input if it can provide enough watts? [duplicate]
I have a small TV which expects 12V DC at 34W. Can I use an adapter with a higher voltage rating (19V for example) as long as it can provide enough amps to satisfy the amount of watts needed by the TV?...
- 2,885
1
vote
2
answers
1k
views
Am I safe working with a power supplier of 12 DC connected to the AC wall socket main line?
I'm working on an electronic home experimental project. But
I have always been afraid of the issue of electricity since it can electrocute.
My question is.. Am I safe working with a power supplier ...
- 29
2
votes
1
answer
4k
views
Function of the Third Pin Inside Laptop Barrel Connector
So I've been doing research on barrel pin connectors, and have been trying to apply this knowledge to understand laptop barrel connectors, specifically. My confusion relates to the function of the ...
-1
votes
1
answer
89
views
What products can be used power LEDs from an wall outlet? [closed]
I am currently working on a project that will be a type of night light that plugs straight into a wall. What parts can I use to convert the wall outlet voltage into that which can be used by a couple ...
