Questions tagged [overheat]
The overheat tag has no usage guidance.
96
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Entire FPGA getting hot evenly, not just a single hot spot
I have a board with an Altera EPF10K30RC240-4N that is not functioning at all. There is a high current draw on the board. The +5V rail is only 2.6V and there is 4.2 ohms between +5V and GND.
The board ...
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1
answer
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Entire Perimeter of FPGA Getting Hot - Why?
I have a commercially-produced board with an Altera EPF10K30-series FPGA. There is an abnormally high current draw on the board. Where +5V should be present, there is only +2.6V.
When comparing ...
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2
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Why is the power adapter external (not built in) to the monitor? [closed]
I am considering to tape this dangling box to the back of my PC monitor for easier manipulation - I carry the screen up and down every day.
However, my intuition has raised a red flag. Perhaps there ...
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4
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Why is the LM7812 getting hot in this circuit?
I have made this circuit. It works fine with normal Zener diode, however when I replaced it with the LM7812 it works fine but as time passes the regulator keeps getting very hot although the load is ...
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3
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18650 parallel power bank cooks the furthest batteries
Against my better judgement I bought one of these 18650 power banks (see image). The reviews didn't disclose any issues and this sort of tech is so common now I never really thought much of it.
It ...
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1
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MAX3232 ESE+ Not Working but ST3232C and MAX3232 Working on same PCB
I have designed a pcb for Rs232 to TTL, UART converter for using ESP32. I will control an LCD with ESP32. Some IC's (MAX3232 ESE+) heating at the first start. and not working just heating and heating. ...
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2
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Transformer design problem
I will try my best because my English is not the best. Thanks!
I'm designing a transformer for a PCB that I made. The circuit in the PCB accepts 5 V to 20 V in.
So the transformer that I made is for ...
5
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1
answer
462
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Voltage regulator LMR33630 doesn't work, asking for circuit review
I've put LMR33630ADDAR voltage regulator into a PCB with this circuit:
It's slightly different from the example from datasheet:
PG isn't connected, CFF capacitor absent and feedback resistors are ...
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0
votes
0
answers
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MAX14920 thermal shutdown
We are working on a BMS circuit. We use the MAX14920 IC. When we connected the 12-cell battery pack to our circuit it sends battery cell voltage to our STM32F103 microcontroller. 1-2 minutes later it ...
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6
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Is this food box safe for electronics?
I want to organize some components and wiring for power distribution for a small solar panel. Voltages up to about 24 VDC, and currents up to about 3 amps. Components inside will include switches, ...
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2
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How can I connect two motors in parallel with different RPM and voltage?
I have a kid's electric toy car with a 12 V battery and 2 DC motors (Model: RS380/6 V & 12 V with 15000 RPM) connected to battery in parallel and to wheels using gearboxes. For some reason, the 6 ...
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191
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H-bridge: Low-side N-channel MOSFET burns occasionally
I am just getting into electronics and my first project is a 555 timer PWM (0-100) and an H-bridge to drive a motor for my brewing equipment (500 mA max. rating).
Here is the setup:
I have a 12 V ...
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0
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133
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ZVS induction heater gets really hot diodes
I'm an embedded software developer and am trying to up my electronics and board design knowledge. As a good first exercise I made a ZVS induction heater. project link
Once assembled I was happy to see ...
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1
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How to calculate break down amperage of wire based on length, resistivity, and cross sectional area?
For this question, I'm assuming the current is continuous, the shape of the wire is cylindrical, and the air is STP air.
(I bridged a fuse with a piece of soldering wire, and I'd like to be stupid in ...
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1
answer
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MOSFETs overheating at higher voltages
I don't have problems working with low voltages like 12V, but when I started working with higher voltages using MOSFETs, I ran into problems with MOSFETs overheating. I tried anything that came to ...
user320546
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0
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White residue on circuit board
What is this white powder on my induction cooker hob? Is is metal salt? The capacitor recently melted
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MOSFET overheating and voltage drop
I've searched on the network for days but couldn't find a solution to my problem I hope you can help me.
I want to create a DC motor speed regulator using IRFZ46N as a power MOSFET and a 10k ...
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LM1117 5 V regulator and 2 servos
I just started my first PCB and I have a question. I want to use two servos (SG90s) and a 5 V regulator powered from a 7.4 V battery.
After all my calculations the temperature that is dissipated is ...
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1
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191
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L7805CV operating temperature
I have an L7805CV powering an Arduino and a serial communication chip from a 12 V supply. Nothing else is powered by the L7805CV as the LED strip is powered via a TIP120 transistor and 12 V.
However, ...
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2
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Maximum output voltage for a buck converter with IR2110 as its driver
I'm currently making a buck converter (rated output of 60V/10A) with IR2110 as its high side NMOS driver. The driver and buck converter circuit can be seen in fig 1 and 2. I've asked a bit on this ...
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Can I make a homemade Peltier module with constantan wire?
I'm trying to make my own Peltier module.
I ordered constantan wire, which I used as N-type semiconductor and iron wire as P-type.
I made this and powered it with 3V, but without response.
What am I ...
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1
answer
101
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BLDC motor and bullet connectors getting hot
I am using the following components:
Lemon RC 3S-2200mAh 25C/ 50C (burst) LiPo battery
Readytosky 80A ESC
DYS D2726-6 BLDC (2200kV BLDC motor)
I am testing out the components with 1045 (10 in, 4.5 ...
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1
answer
293
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Reflow soldering with temperature-sensitive components and without a reflow oven
I need to assemble and test a rather large (40x30 cm) board with single sided SMD parts, Sn Ag Cu solder (officially 217°C melting point). Usually I place group after group of components and locally ...
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When running a wireless charging circuit, my power supply whines and the transistor gets super hot even though everything works, is anything wrong?
I created a wireless LED power circuit to drive adafruit wireless LEDs.The circuit works great, LEDs are fully lit but my desktop power supply lets out an awful whine whenever its running (it normally ...
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1
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258
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Transformer overheating issue
I have been using a 500 VA step down transformer, whose primary voltage is 2 phase 415 V and secondary voltage is 230 V. The issue is that the windings are getting overheated, without being overloaded ...
0
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1
answer
417
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L9110 motor driver burning after some random time
I did a quick prototype of a plotter (two motors for x and y axes, one servo for the pen up/down).
I'm using a L9110 module (dual H bridge board) to control the x and y motors. The power supply for ...
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1
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134
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Why is my FOD3180 getting hot until it dies?
I've built a circuit that helps me translate TTL pluses coming from an rotary encoder into HTL pulses needed for another device.
I use a FOD3180 to get a push-pull output and a SFH6206-3T that allows ...
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3
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ESP8266/ESP-12F gets damaged when powered by LDO (LD1117v33) every time
Every time I connect a new ESP8266 (ESP-12F) to a new LD1117v33, as long as I insert an ammeter in between, it runs fine. It consumes about 70mA during normal running, and almost 0mA when in deep ...
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IMU ST LSM6DSL getting boiling hot (i2c)
So I designed this custom PCB with a ESP32 and an IMU ST LSM6DSL over i2c. Everything is running at 3.3V.
However, when I initialise the IMU in the firmware and start reading it in normal mode at ...
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Reason behind coil melting
Today I managed to melt the ignition coil of my RC engine. First let me describe my circuit, I have also created a diagram, however I could not find all the parts in the designer so I think some ...
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Boost converter Ic extremely heats up when trying to switch using Mosfet
In Case 1, the converter works fine but in the other case it heats up extremely.
Tried same using a PNP nosfet and it heats up the same as soon as load is connected.
12v 1A router is used as a load ...
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2
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My soldering station's iron is rated for 70W, can I modify a 75W one to work with it?
I have an Aoyue 936A soldering iron rated at 24V/70 watts.
I came across a cheapo soldering iron rated at 24V/75W and rewired it according to the pinouts of the original one. The thermocouple readings ...
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Potentiometer sizing
I have a 12vdc on automobile trying to install potentiometer for an 7amp cooling fan. I would like to control the the speed. I've purchased a a 2watt 100ohm potentiometer and it's running hot to touch....
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4
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PWM motor control, MOSFET getting very hot
I have problem driving a high current DC motor (RS-775 24V-12V 80W), the MOSFET getting very hot when I use PWM signal.
I'm using Raspberry Pi 3 b+ to generate PWM signal at (pin 8) which connected to ...
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1
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Thin wire overheats, thick wire allows too much current to flow
I'm currently building a mini lathe to turn wood. I am using a 12v motor and I was experiencing some initial problems with the thin wires I was using; they overheated instantly.
I then changed to 14 ...
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1
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435
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How to fix an overheating Arduino nano?
I have an Arduino Nano and when I power it either via USB or VIN it heats up very quickly. Before it started to overheat I heard a spark but didn't see which pin sparked and I think that's the problem....
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ESP12F (ESP8266): every program runs okay but it's warm/hot
I have an ESP12F that I programmed with USB-TTL from the Arduino IDE.
The wire setup when a program is running:
USB->ESP12F
RX->TX
TX->RX
3V3->VCC
GND->GND
While on GPIOs of ESP12F:
RST-...
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4
answers
134
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I'd like to know if I can push 40 volts at 3 amps through an IRLZ44N MOSFET?
I already have the datasheet, it states it can handle 50 volts at 50 amps but I'm worried about spikes since I'm using it to switch the primary side of the transformer at 70 Hz and it will be a square ...
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Reduce Overheating of an old Audio Video Receiver - Harman/Kardon 3500
Because good AVRs are super expensive, I got one cheaply from a friend. It works really decently, but recently it started to turn itself off after a while. With my technical background I looked into ...
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LM311 overheating
I breadboarded the circuited below. Within seconds of operation, both the L7805 and LM311 start to overheat very badly.
I tought it had something to do with the coupling capacitor or the AC signal so ...
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0
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MIC28515 overheating with high input voltage
I've designed this MIC28515 buck regulator based on the manufacturer schematic reference. I'm planning to run it at 70VIn
I'm doing the tests with @ 5V 2A load Temp(Amb) = 20C.
When I set a VIn of ...
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Can I run a 2xAAA battery device on a 5 volt USB device without the motor burning out?
Just wondering and I don't want to waste parts if it will just burn out if I have it plugged in too long.
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Can a voltage higher than 5V be applied to the 28BYJ-48 (5V) stepper motor?
I want to automate my roller blinds by using an ESP (NodeMCU) and I was thinking of using a stepper motor.
I had a 28BYJ-48(5V) stepper motor laying around with the ULN2003 driver it came with.
...
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2
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24 V transistor switch acting strangely
I am working on a project to switch a spring-applied brake (datasheet, page 84, MCNB 2GR) using a Teensy 3.5.
I only have limited electronics knowledge and am struggling with weird behaviour from the ...
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BLDC 3phase motor. The resistor 5W 0.1 ohm to ground very hot when motor working at 250Hz
Any one help me on this my issuse.
I have a BLDC 3 phase motor controler similar to this Schem here encloses. When the motor working at 150Hz everything is ok. But if it is works at 250Hz then the ...
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ULN2003 IC , should I stack it or should I divide the load?
I am trying to drive 7 led strips.
I saw in the datasheet that the ULN2003 IC can supply 500mA per channel. In reality this would be limited due to heat dissipation by the IC.
Should I drive 3 led ...
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2
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UPDATE - How to prevent overheating of my ebike system?
I have a Li-ion battery pack 18650 cells with a BMS, 10 in series by 7 parallel. The pack I bought was defective from day one and had a 7 cell row that got hot when charging now I just repaired the ...
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P-Channel MOSFET high side switch in an MPPT buck converter gets very hot with no load
I am a novice working on an MPPT solar charge controller. Q5 mosfet (SUP53P06) gets very hot even when I have no load attached.
The circuit is just like below except I have no current sensors in it ...
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245
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Switching regulator overheating
I am using LM2576T as a regulator in my design.
I made a circuit by the datasheet, but I haven't connected the diode (I haven't got any at the moment).
Could it be a reason for switching regulator to ...
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0
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What caused these crystals to grow on overheated PCB?
Source
This is a picture of a screw terminal on a 3d printer mainboard that overheated or caught fire, likely due to a loose connection or overcurrent. One thing that caught my eye is the crystal ...
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