All Questions
26
questions
0
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1
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49
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First PCB design - remix of PCB I found already on the market with some 12V DC jacks - any advice?
I created my first PCB design - its a remix of PCB I found already on the market with some added 12 V DC jacks and XH-2A jack - this will only ever be used with 12 V up to 2 A - wondering if there are ...
- 101
0
votes
2
answers
115
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What MOSFETs should I use in this configuration?
Here is a configuration of MOSFETs which I believe allows for two different sources to supply power to the same load.
This diagram was originally found here.
The primary source is connected to the ...
1
vote
2
answers
556
views
Replacing SPDT relay with MOSFET
I'm having trouble replacing a SPDT relay with a MOSFET circuit.
I have an SPDT relay that serves as an emergency brake of a small motor when the power goes off, shorting both motor inputs.
It's slow ...
- 29
2
votes
1
answer
163
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How to get a steady 12 V output from 12-15 V source?
I am working on a project with a variable voltage input 12 - 14.6 V.
I need a constant 12 V output to power some 12 V LED strips. I’m running this through a home automation board and will be ...
- 197
0
votes
0
answers
159
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Options to control (fast switch) a 12V LED DC with MCU - mosfets vs. relays vs. SSR vs. mosfet relays vs. something else?
(Newbie alert) I have a 12V 3A light that I want to control in a ~12V DC circuit (lead acid battery, stator coil). The light shares a common ground with every other light unit in the circuit. I was ...
- 53
0
votes
1
answer
768
views
Switching 12V vehicle headlights with Arduino / Mosfet combination
Ground level noob here, started to tinker with electronics at the beginning of this year after I couldn't get any electronics shop in my town replace my bike's gauge cluster SMD LEDs.
I learned few ...
- 53
1
vote
2
answers
237
views
MOSFET started to smoke when switching a 12V bulb - how can I troubleshoot the cause?
This is the case: 12V bench power supply (current limited to 3A) wired to a 30W LED bulb (H7 bulb for vehicles), controlled by an Arduino via the gate of the 2SK1363.
The signal from the Arduino was ...
- 53
0
votes
1
answer
259
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Wiring two separate circuits with separate loads (one with mosfet and Arduino) with a single bench PSU
I have a cheapo bench PSU with one pair of terminals on it and I am trying to wire the pictured circuit correctly and in best possible practice. As my description on the schematic says, one LED device ...
- 53
0
votes
0
answers
362
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MOSFET as PWR/GND DPST Switch
I have started trying to replace relays in my (12V) electrical circuits with MOSFETs. I have somewhat limited experience with MOSFETs, but I think I'm starting to understand it more.
I've drawn a ...
- 1
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
0
votes
1
answer
65
views
Parking Light And Signal light with same LED using MOSFETS
I have a project where I have an existing 12v parking light and I want to also have the turn signal use the same light. I've constructed a circuit using 2x NMOS and 1x PMOS. I think it will work and ...
- 1
0
votes
1
answer
59
views
How to control a lightbar with 20 individual modules? [closed]
The TL;DR version of my question is, how do you control 20 pieces of 12V/1A outputs in the most reliable, compact and cost efficient way, with something programmable?
The long version:
I got a ...
- 101
0
votes
1
answer
133
views
LM2940, 7808 and Multichannel PWM chip
I'm putting together a circuit board to power and dim 5 LED channels.
The average voltages on the channels are 12.3V, 11V, 11.4V, 7.8V, 6.6V, and max current is 1A.
So my current plan is:
12V ...
- 135
1
vote
1
answer
2k
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Raspberry Pi Mosfet Switch
I'm trying to set up a project in which the raspberry pi will turn on/off and on a 12V circuit. I've read that a MOSFET would be best but I can't seem to get the circuit to work. I'm using a 30N06 ...
1
vote
3
answers
798
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MIP2M4 mosfet, Arduino Uno and a 12v PWM PC fan
First, I'm am new to using transistors and MOSFETs in electronics circuits.
I have extremely basic notions of electronics, and am able to setup and use "of the shelf" boards and Arduino modules, and ...
- 135