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Questions tagged [heat-protection]

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-1
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1answer
63 views

Trusted and small price 220 to 5V

How do you choose your 220V to 5V components? For example, should I trust one like this that it doesn't heat too much or that it doesn't catch fire? The component needs to be relatively small priced ...
22
votes
8answers
6k views

How to solder a 70 °C (158 °F) thermal / temperature fuse

For my DMX project (schematics is not important), I soldered this temperature fuse which has just two leads (see picture below). The fuse doesn't work (meaning it does not conduct electricity) ... ...
-2
votes
3answers
118 views

Does a heat mat need current protection? [closed]

Would any sort of extra circuitry be needed for connecting a heat mat into a power supply? The mat says it draws 4.1A and the power supply can provide 6A, both working at 12V. Will it work as is, or ...
2
votes
2answers
135 views

Can a heatsink protect a PYNQ-Z1 board from damage? If so, which one should I use?

I'm going to purchase a PYNQ-Z1 FPGA development board from Digilent (Link: https://store.digilentinc.com/pynq-z1-python-productivity-for-zynq/). However, some of the comments on the linked page say ...
1
vote
0answers
32 views

How to protect electrical parts from heating coil

I'm trying to diy an electric lighter with a 3.7v lithium battery, an on\off switch, and a micro lipo usb charger. Already connected the coil and everything works as expected. The only problem I ...
-2
votes
2answers
101 views

What do we mean by bidirectional TEC?

I have designed a H-Bridge driving circuit for TEC where the polarity across the TEC (load) changes according to heating and cooling application. But when I am searching for TEC Module they have ...
1
vote
1answer
97 views

Heat sinking ideas for an HZIP package

I'm building a design involving Toshiba's TB6600 chip which has an unusal HZIP25-P-1.00F package. I've seen implementations where folks have bent the pins manually and soldered them horizontally such ...
-1
votes
0answers
1k views

CD/DVD Stepper motor Overheating

I am attempting to build a mini CNC machine using old CD/DVD drive stepper motors. I am using an Arduino UNO and a Stepstick driver board. I have got a single motor moving, however it ends up heating ...
14
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3answers
3k views

Is it a good idea to use a single heatsink for two IC's?

I am using a 7805 IC along with a diode bridge Br805D (bridge rectifier) IC on a general purpose PCB, with a 220V / 50Hz AC input. Both the components tend to heat up really quick and I plan to set ...
0
votes
1answer
43 views

Internal thermal limit of LF00 voltage regulators

Reading the datesheet of the LF00 voltage regulator series leads to a basic question to myself. The basic facts at the beginning of the sheet telling me, there is a logic with an INTERNAL CURRENT ...
0
votes
1answer
157 views

most resistant substrate layer to embed a specific wire

I am in process of embedding a wire in a choice of substrates. I would apply voltage so much as to heat it (the wire) to 220 degree Celsius max. What are the best choice of substrates I can use so ...
1
vote
1answer
300 views

I am designing a heater and i want to hold the nichrome wire inside a frame, what can be used?

Can i use cement for holding the wire ? Or some other material is required.
1
vote
3answers
2k views

Reflow oven vs even hot plate

I've recently been searching for a simple, easy yet cheap way to reflow SMDs on a PCB board as I have never tried it before and always wanted to create a small and compact circuit. I then found a ...
1
vote
2answers
378 views

cartridge heater control

I am interested in designing with cartridge heaters to implement a temperature control system, with a microcontroller sampling temperature sensors and controlling heating elements. I will probably aim ...
2
votes
1answer
1k views

What happens when a peltier fails?

I am trying to determine all possible failure cases for a heating application with a peltier. Most sources I find on the internet are looking at peltiers as a way of cooling CPUs, so I have heard ...
2
votes
2answers
425 views

Can conformal coating help against high-temperature environments if the chips heat up as well?

I have seen many claims of conformal coating helping for protection against, amongst many other things, extreme temperature. One such claim in here would be: Question regarding PCB coating My ...
1
vote
1answer
4k views

Relationship between current and temperature

I am trying to find the specific current needed to heat up a wire to a specific temperature. The wire material is kanthal. I've calculated the resistance, from the resistivty and the dimensions of the ...
0
votes
0answers
55 views

heat shielding electronics during manufacturing without affecting signal

I'm developing a ball that has a module containing sensors, a Li-ion button battery and bluetooth chip. The module is being placed inside a ball and I'm thinking of potting the electronics with a ...
0
votes
0answers
422 views

150-400V Single Phase AC Voltage Sensing

I want sense voltage interval with 150-400V AC signal. Normally, I sense 220V AC signal with SFH6206 IC perfectly but this time the voltage source at input of my project is 150-400V AC dimmer circuit. ...
6
votes
1answer
399 views

Better approach for maximizing Cooling Fan Life Expectancy

We are working on a product which is extremely cost sensitive. It generates a lot of heat so we are planning to use a heat sink. For those 'very rare edge causes' where heat sink alone cannot cool ...
0
votes
1answer
7k views

What calculations determine the choice of the overload relay trip class to protect a motor

I know that the motor trip current determines the choice of the trip class, but I do not know what are the range values for each one. Lets say that I have an engine with a trip current of 190. Somehow ...
1
vote
1answer
160 views

IC out of oven after baking

Is it ok to take out the ICs/components from oven immediately after baking hours? Or is there a standard cool down temperature before opening of the oven after baking?
2
votes
1answer
45 views

High Temperature Conductor in Air

I am trying to determine what the best material is for a high temperature conductor. It is for distributing power inside a furnace. I need to run at around 1000 celsius (the furnace is hotter but this ...
0
votes
2answers
128 views

PCB coating for a high temperature environment

What PCB coating is good for a high temperature environment (my environment is about 30-70 C), and is available in a spray can or so that is easy to implement without need of a device/machine?
1
vote
2answers
586 views

Overheating heating element

I'm making a system that is going to heat water in a 25 liter tank to a given temperature and keep the water on this temperature with a precision of +/-0.5 °C. As I have done some research I have ...
0
votes
1answer
85 views

Some help with 9V Longlife VARTA batteries?

I recently tried to make my own LED circuit to give some light to my room at night.I ended up with a circuit that goes like this: A 9V battery with clips goes to a SWITCH and from the switch to a ...
1
vote
1answer
549 views

L705CV Voltage Regulator Overheating [duplicate]

The L805CV voltage regulator is capable of producing a consistent 5v 1.5A draw. I am creating a small raspberry pi case and have a 12v 3a power supply to accomplish the project. I am powering a 12v ...
2
votes
1answer
437 views

Thermal grease / adhesive: Higher Conductivity & Lower Impedance or vice-versa?

I have been reading a fair bit about Thermal grease & adhesive comparisons. There is a lot of information out there - even including tests made with tooth paste(!), which is mind blowing for me. ...
0
votes
3answers
618 views

Miniature heater with more-or-less constant temperature. Need tip on element

I'm a software engineer with very basic knowledge of electronics. I have a project in which I want to make a small (cylinder of length about 100-150mm and diameter 20-30mm), localized heater that ...
2
votes
1answer
258 views

How much humidity can a microcontroller/embedded device withstand?

I'm working on a project that employs a microcontroller in an 80-85°F environment with quite a bit of humidity. It's going to be placed directly next to an array of fish tanks. Obviously, the water ...
2
votes
3answers
5k views

Do I need a heatsink for my voltage regulator?

I use L7805CV voltage regulator (TO-220) to get 5 V from a Li-Po 7.4 V 2200 mAh battery. However, after a while, voltage regulator gets really hot. Current measurement showed 200 mA. P=I*V=0.2*(7.4-...
1
vote
3answers
811 views

Electronics in high temperature environments

I'm relatively (ok, very) new to electronics. I'm trying to find where to buy parts (or even just more information on what sort of materials I should be looking for) to build a circuit board with a ...
12
votes
2answers
2k views

Warming PCB in a low temperature environment

I have to develop a microcontroller circuit that will run at low temperatures (as low as -60C). I want to heat the FR4 PCB board until it reaches the commercial temperature range above -40C. I found ...
7
votes
3answers
3k views

How is “Overtemperature shutdown/protection” implemented for ICs?

IC data sheets often give some informations about the circuits over-temperature protection. Lets take a Microchip LDO (MCP1702) for example: "...If the power dissipation within the LDO is excessive, ...
3
votes
4answers
19k views

Voltage regulator too hot to touch [duplicate]

I'm working on an RGB LED project. I'm using this as the power supply: https://www.sparkfun.com/products/114 It uses an LM317 which according to the data sheet can supply up to 1.5A. The LED's I'm ...
2
votes
1answer
451 views

Wireless water level sensor, in sump. Installation best-practices for longivity

My wireless water-level sensor is working fine, and when deployed in the sump-well, it is giving me periodic readings quite well. At this stage, I have the circuit still on a breadboard, and now plan ...
1
vote
1answer
269 views

PCB Board design for H-Bridge TLE5206

I would like to make PCB board for TLE 5206-2G (check the datasheet). It is TO263 package. Basically, what i dont know is how to transfer heat out of the IC. I saw few PCB's that has little copper ...
6
votes
1answer
4k views

How can I prevent a 556 timer IC from becoming very hot?

I built the circuit described in a previous question/answer which I will repost here: It's been running quite well, actuating the solenoid at regular intervals as designed. The TIP122 transistor is ...
3
votes
2answers
2k views

Do Thermal Cutoff switches exist for temperatures below 50 C?

I have been trying to find some passive thermal cutoff switches for a project, but it seems that all of them are for 65 degrees C and up. Is there another name for lower temperature TCOs? Any help ...
2
votes
4answers
520 views

12A current from 24V power source, are there resistors which can handle the wattage?

I'm planning on using a 500 W DC motor powered by 2 x 12 V batteries in series. But I want to reduce the power even more by adding 2 Ohm resistance so the power will be 288 W instead. However, ...
2
votes
1answer
357 views

Desoldering Issues

Was trying to do a simple repair on a controller board that came out of a bread oven today and ran into a problem. The old solder will not melt/allow me to extract from the component I need to replace....
0
votes
1answer
316 views

Voltage follower with thermal protection

Could someone suggest a voltage follower with thermal protection (thermal shutdown)? I see possible solutions: An LDO with external reference. I found only few of them, seems they are called ...
9
votes
4answers
19k views

What kind of damage could a soldering iron do to a component?

As a follow-up to this question, what kind of damage could a soldering iron do to an IC or other component if left on it for too long at too high a temperature? ESD damage can be subtle, for instance....
2
votes
4answers
159 views

Dealing with excess heat

As a sort of weird side project, I'd like to make an oven timer that has selectable food stuffs and associated timing information. Now while this device would be simple to make I would like to stick ...