Questions tagged [overheat]

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1answer
40 views

Is a 12V voltage step-up USB to 4-Pin PC adapter safe to use in an enclosed space for extended periods of time?

I am interested in using an adapter cable such as this to power a 4-Pin fan through usb: The fan specifications are as follows: Now, my question is this - Is something like this safe to use for an ...
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4answers
109 views

MCP1700 voltage regulator instantly overheats and starts to smoke, no load

Newbie question. I have a MCP1700-3302E LDO voltage regulator to power ESP8266 using a 3.7V battery. However, as soon as I connect the negative lead to the ground pin and the positive to Vin the ...
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2answers
93 views

Why do the capacitors inside the inverter heat up?

I'm having a problem with the inverters of textile machinery. The machine I work with is the Rieter brand Ring machine and the main inverter, the part is defined as 75 kw U1. 12 units 2200 uf 400 volt ...
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1answer
63 views

Motors overheating with DRV8835

We have a problem with the DC motor driver DRV8835 that we have soldered to the black PCB attached below (4). Prior to this driver, we were using L293D h-bridges to run these DC motors and never ...
0
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1answer
101 views

LF33CV voltage regulator overheating

I'm trying to turn on a laser (3.3v - 4.5v, 100mw) using a 9v battery and LF33CV as voltage regulator(TO220 package, 3.3v output). After 20 seconds the voltage regulator is getting so much hot. I was ...
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3answers
68 views

Is it possible to desolder the bond wires by overheating a chip?

I was trying to solder some VQFN packaged chips for the first time using a hot air gun, because that's all I have. I set the temperature to rougly < 350°C and startet the process. Sometimes it ...
0
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1answer
165 views

pam8403 using low wattage speaker

I am using the output of usb sound card as an input to PAM8403 ic with specs from datasheet. However i am using 4 ohm 0.5 W speaker. So i have tried testing with that and it works but sometimes with ...
1
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1answer
144 views

LDO Heating Issue

I am working on a PCB project and having a problem with the linear regulator IC. I want to be able to maintain a relatively constant temperature for the heating element. The whole system is ...
0
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1answer
59 views

Is there anything that can be done about this U5215 universal motor? [closed]

Recently my hairdryer stopped working properly. While drying my hair, the fan would suddenly turn off after a minute or two (it seems as if a thermal switch in series with the motor cut the current to ...
0
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0answers
16 views

Unexpected battery float voltage in BQ2057WSN charging circuit

We have designed a changing module using BQ2057WSN IC to charge a 7.4V, 6600mAH Li-ion battery. My supply power is 12V,2A SMPS. I have set my charging current to 600mA. The battery is charging, but ...
1
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1answer
177 views

500V generation, MOSFET Heating Problem

Referring to my previous post. I have successfully generated 500V. The problem I am facing an issue. MOSFET I am using for switching is FQB34N20LTM. The MOSFET is burning badly. The snap of drain ...
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5answers
214 views

MOSFET is overheating when running on a 20A load

I'm trying to build a controllable switch for a heavy load (3D printer), controlled by a microcomputer. I don't want to use relay because of slowness, sound and durability. So I've built a switch ...
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0answers
22 views

Can a bad cell cause excessive heat in charging circuit?

Something I have noticed and am curious of. I had a cases where a lithium ion cell, is bad or dead and it seems to cause overheating in the IC chip on the charging circuit Today I was having issues ...
2
votes
1answer
283 views

What mosfet do I use in induction heater?

I have been building an induction heater based off this schematic. I have tried using irfp250m mosfets. Works like a charm. But whenever I put a too big piece of iron inside the coil, the mosfets soon ...
2
votes
1answer
99 views

Switching power supply toroidal heats more than 100ºC. Is it normal?

I’ve got this 48V 10.4A generic chinese switching power supply to power my mini lathe’s controller and stepper motors. The two steppers draw when working just 1.5A max each. And the controller 0.5A. ...
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4answers
10k views

Is it Safe to Plug an Extension Cord Into a Power Strip? [closed]

Just a bit of context, I am a technology enthusiast. I love everything from software to hardware, Windows to Linux, Computer to Phone, and everything in between. So, I wouldn't be surprised is my ...
1
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1answer
65 views

Heating issues with solar charging circuit

I am using the above circuit to charge a 7.4V Li-ion Battery.With input MPPT voltage set at 12V, I have applied 13V input voltage to the circuit. The battery is charging at 1.4A. (according to the ...
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0answers
53 views

Why do heaters vary widely in resistance even though they have similar power requirements?

I have a soldering station equipped with a 24V/60W soldering iron. Its heating element (pins 1-2) resistance measures around 50 ohms. The resistance of the thermocouple (pins 4-5) measures around 2 ...
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3answers
171 views

Microcontroller overheating when sensor is plugged in [closed]

I am building a board based around an STM32L051C6 microcontroller, which will measure a hall effect sensor (AH3362Q) and count the time in between the edges the sensor sees. The sensor is powered from ...
-3
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4answers
154 views

Lithium ion battery charging problem [closed]

I am making a rechargeable led light My power source is mobile litium ion battery, (3.7)v 1800mah Whenever is use to chrge this battery with the mobile charger 5v... The diode in4007 connected to the ...
1
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1answer
173 views

THAT4315 audio analyzer - capacitors getting hot

I have designed a audio spectrum analyzer circuit with THAT4315 and a drivers for IN-13 bar graph nixie tube to visualize the signal level. To supply +-12V to the opamps, the Meanwell NSD15 module is ...
0
votes
1answer
141 views

Class-AB Amplifier Excessive Heat

I'm using a TI TPA6017A2 as a pre-amp for an in-car audio application and it's getting excessively hot, to the point where the IC burns my finger when touched if I set the input volume to max. Beyond ...
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1answer
127 views

LED light cycles on and off - Is it a heat or voltage problem?

I have this LED light that was over the aquarium at my work desk. There's a circuit board (not pictured) that controls when the lights go on and off but, after a power outage a few weeks ago, it seems ...
1
vote
1answer
792 views

MAX487CPA/SN75176BP RS485 IC gets too warm (in DMX Splitter circuit)

Brief I built part of the scheme below (input K2/IC5, optocoupler IC9 and output IC6/K3). IC9 is overheating when I connect LED pars to K3, because voltage is flowing back into pin 6/7. If I connect ...
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3answers
198 views

What can happen with the PCB foil while SMD resistor destructive overheat?

I need to protect the gate driving circuit by putting the resistor between the gate and the control circuit: During the testing of the mockup MOSFETs can go be destroyed which leaded to high voltage ...
0
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4answers
428 views

Overheating of LM1117 SOT223, 5v-3.3v

I'm having problems with my design. I put the schematic here, maybe someone can find an error that I didn't find yet. EDITED[I forgot the schematic, sorry...] The microcontroller, dsPIC, has the ...
6
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5answers
4k views

Why are DIMMs not equipped with a heat sink like a CPU?

I know that a DIMM is composed of a set of chips that contain control logic managing the decode and prefetching memory operations. According to a product specification, I found that newer RAM works at ...
4
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3answers
3k views

DIY Induction Heater failure - MOSFET overheat

I saw this video about DIY Induction Heater and I decided to make it by myself in order to learn something from this project. After finish wiring everything, I connect the power supply and heard/saw ...
14
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3answers
2k views

LM2586 - Inductor Heats Then Burns

I'm designing a step-up constant current source to drive LED strips (nominal load voltage is about 54 VDC). Requirements: Vin: 18..32 VDC Iout = 0.2 A Vout = 54 VDC (nominal) - 57 VDC (maximum) ...