All Questions
46
questions
3
votes
3
answers
1k
views
Using Linear Voltage regulators in parallel for a high current load
I need to build a high current 12 to 5 volt regulator.
This will power neopixels, which draw 60mA each, and we have like 800 of them, so around 48A when all of them are on at full brightness and white....
- 41
0
votes
1
answer
86
views
I am building a circuit that operates at 5 V but I need to use SIM7600 module @12 V
I am building a circuit with an Arduino that operates at 5 V, but I need to use a SIM7600 module that will be connected to the Arduino's pins, and needs 12 V in order to operate.
Will I have any ...
- 175
0
votes
1
answer
159
views
What type of circuit/components are needed to make a phone charger that stops charging when the battery is full?
I'm building my own portable power station, using a 12v lead acid battery as a power source. Currently I've got 1 12v socket and 2 usb ports on it. The idea being to use it to power something like a ...
- 103
0
votes
1
answer
596
views
Step down buck converter - lower input voltage than output - LM2596
I want to power 5v leds from a 12v source in my car using a "DC-DC Adjustable Step-down Buck Converter LM2596 3A". The source has a dimmer switch which can regulate the voltage from 12v to 1....
- 1
0
votes
1
answer
1k
views
5v to charge a 12 V battery pack (possible with this?)
Is it possible to charge a 12 V battery pack with a 5 V charger (say USB charger)?
With the follow conditions...
The charger will internally charge cell 1 upto 4.2 V, then switch to cell 2 and charge ...
1
vote
4
answers
2k
views
12V pulses into 5V pulses
I have a 12V pulse square signal coming from an RPM sensor. I would like to translate it into 5V pulses since I will need to use it as input in an Arduino. What do you guys think is the easiest way? ...
- 55
2
votes
0
answers
167
views
2N2222 NPN Transistor, no current flowing through collector
I have a 2N2222 NPN Transistor wired up in the most basic common emitter setting (emitter grounded, base hooked up with a 1k resistor to 5V, collector connected to load and load connected to +12V). ...
- 21
0
votes
0
answers
361
views
Solenoid 12 V control with Arduino
I have some 12 V solenoids and I want to control them via Arduino, but Arduino outputs a maximum 9 V voltage through the Arduino jack input, and the voltage on Arduino pins is only 5 V, so how do I ...
1
vote
0
answers
2k
views
Triggering 12v Relay with HC-SR501 PIR sensor
I have a SRD-12VDC-SL-C relay with this configuration:
https://robu.in/product/1-roadchannel-relay-module-light-coupling-12v/
And I want to trigger it with PIR Motion Sensor Detector Module HC-SR501
...
- 23
0
votes
2
answers
100
views
5v to 12 Power Supply
I have really no idea about electronics.
I am trying to provide IR lighting for my night camera that I use with the raspberry Pi.
The Pi is powered by a 5v usb power bank. The IR requires 12v.
I ...
- 135
-1
votes
1
answer
98
views
Reversing the input of a transistor
I want to detect if a 12V DC line has power or not. I want the transistor to work like this: If pin 2 has 5-12V, pin 1 and 3 should be disconnected and should stop the flow of 5V 2A across pin 1 and 3....
- 141
0
votes
2
answers
2k
views
Can 12V relay be used instead of 5V relays?
I have the project of making a touch switch using the IRFZ44N MOSFET for making a small led glow and stop glowing when I touch the probes. I thought of using a relay if I have to make a bulb glow, by ...
- 352
-1
votes
1
answer
151
views
What is happening when I apply 5V DC to the DC end of a 12V AC to DC adapter? [closed]
The question is in itself a little bit confusing but I will try my best.
So I have a normal 12 volt (1 amp) AC to DC wall charger, nothing fancy about it. I use that to power a fan, which works great ...
- 135
1
vote
1
answer
533
views
Using 2 5V pins to get 10V [duplicate]
I want to to my RaspBerry Pi 4 with an old small CPU fan. However it's a 12V fan. Is it possible to use 2 of the 5V pins on the board to total to 10V? Sorry if this is a dumb question. I haven't ...
1
vote
2
answers
2k
views
How to amplify a 0-5V PWM Signal to 0-12V, 10A
I need a Power amplifier which amplifies a 0-5V Arduino-generated PWM Signal to a 0-12V Signal with 120W, for powering a ZVS induction heater.
Linearity is not important because i can correct the ...
- 11