2020年05月14日
Stranded copper wire and integrated circuit
Dismantling integrated circuits with multiple strands of copper wire
Remove the plastic sheath of the multi-strand copper core wire, place the wire in rosin and heat it with an electric soldering iron, so that the wire is stained with rosin. put multiple strands of copper core wire on the pins of the integrated block and heat them with an electric soldering iron, so that the solder on the pins will be absorbed by the copper wire stained with rosin. Suck all the solder on the pins of the integrated circuit, and then gently pry off the integrated circuit with tweezers or a small flat-blade screwdriver.
Find IC SDRAM/IC DRAM memory on Heisener. We provide you with detailed specification that facilitates your search for the ideal parts. Get a quote from us now.
Adding lead solder melting disassembly, this disassembly method does not require the use of other tool materials, and is particularly suitable for dismantling single-row or double-row ICs with a small number of pins.
The operation process of disassembling the integrated circuit by adding pin solder to melt is as follows: during disassembly, first add some solder to a row of pins of the integrated circuit, let the solder connect all the solder joints of the row of pins, and then heat it with an electric soldering iron Move the middle pins of the column to both ends, use the heat conduction of the solder to melt the solder on all the pins of the column, and then use tweezers or a small flat-blade screwdriver to deflect the IC slightly to the position of the column. Then use the same method to heat and pry the other row of pins, and alternately heat the two rows of pins until they are removed. Under normal circumstances, each column of pins can be removed by heating twice.
The hot air desoldering station or hot air gun is used for disassembly. The hot air desoldering station or hot air gun has a nozzle that can eject hot air with a temperature of several Baidu. The hot air is used to melt the solder on each pin of the integrated circuit, and then the integration can be removed Circuit.
related articles：
Compare the reference data to determine the fault
Main points of use in road resistance measurement
Exclusion and substitution methods
Substitution of integrated circuits
Tin-sucker disassemble integrated circuit
2020年05月08日
The impact of COVID-19 on the semiconductor market
The US stock market is still trying to understand the global coronavirus pandemic, which lost nearly 20% of its value in a week. The cooling-off period (also called "circuit breaker") automatically stops overheated transactions at different intervals.
Commons Workshop provides coworking . Break free from the setting of the traditional office and join us in this wonderful workspace in Wan Chai. Spark communications today with the like-minded.
The market index fell sharply. The index shows the relative performance of the Dow Jones Industrial Index and the Nasdaq in the first half of this year. Since that date, this has been a roller coaster, the market rose sharply last week, and this week began to fall again.
In this era of financial uncertainty, what does this mean for the chip market?
Because The Memory Guy is a trained engineer, I cannot easily explain what is happening in the global economy, but my background as an analyst in the semiconductor industry has made me clear what is most likely to happen in the chip market. In this article, my purpose is to provide an extremely brief version of the story I am telling my clients in detail. Since the market repeats the same cycle regularly, when forecasting semiconductors.
The idea that I will explain below is the fact that led to objective analysis of semiconductor predictions that have been the most consistent predictions in the industry for the past 13 years. We highlight this fact by sharing the annual forecast video on the pages of our website.
There is a very close relationship between memory revenue growth and overall semiconductor revenue growth. These points show the relationship between the annual increase in memory revenue and the growth in total semiconductor revenue during 1974-2018. Except for six years in the 1980s, all scores fell within the range outlined by the sphere. This relationship simplifies the task of creating semiconductor predictions. Memory is the more volatile part of the semiconductor market: if you know what memory might do, then you can predict semiconductor revenue.
TDA7297 is a dual-bridge amplifier specifically designed for TV and portable broadcast applications.
related articles：
What effect does the market have on semiconductor exports
Impact of the market on the company's chips
How about semiconductor investment
2020年05月04日
Will charging the entire night damage the cell phone battery
Will charging the entire night damage the cell phone battery
Charging before bed is a guarantee for normal use of the phone during the day. If the phone is not fully charged, it seems that there is no sense of security when going out.
This question has two doubts: first, is it safe? Because many media reported that the overnight charging of mobile phones caused explosions, fires and other incidents; second, charging overnight, will it shorten the life of mobile phone batteries?
Looking for conference rooms rental in Hong Kong? Commons provides excellent rental services to companies and entrepreneurs with different budgets. Suitable for all types of meetings and purposes.
Is it harmful to charge the phone all night?
Under normal circumstances, there is no harm in charging the phone overnight. Because, now mobile phones come with pMU, power management unit. When your phone is fully charged, the pMU will give a signal to power off, if you do not disconnect the power, it will enter the standby state.
Reduce battery memory effect, choose from our parts of battery management. Heisener provides a wide range of quality parts for integrated circuits.
When the mobile phone's power is slightly consumed, the pMU will charge the mobile phone again, but this time the charging is using low current charging; this way the cycle charging is not harmful to the mobile phone battery, nor will it cause problems such as explosion and fire of the mobile phone. The overnight charge mentioned here is to use the original charger and battery of a regular manufacturer, or a trusted third-party charger. If you change it at will or purchase it at a roadside stall, the safety cannot be guaranteed.
Looking and cloud solutions?
Will charging overnight reduce battery life?
Now mobile phones use lithium batteries, and the loss of battery life under normal circumstances is very slight when charging overnight.
Moreover, the mobile phone will automatically power off when it is fully charged, which will avoid overloading. So there is no need to worry that charging overnight will shorten the life of the battery, and you do n’t have to wake up in the middle of the night to unplug the charger, you can sleep peacefully.
Conditions that can shorten the battery life are: playing games while charging, making calls, watching TV, or performing other operations. In addition, the use of inferior chargers will also affect battery life.
When the mobile phone is used under heavy load, the mobile phone itself generates heat, and the heat generated by the battery during charging will cause the overall temperature of the mobile phone to rise, and high temperature is the biggest killer of lithium battery aging.
related articles：
Whether the battery is full and plugged in has no effect on the battery
The battery is full, continue charging, is it good for the battery
What is the difference between a lithium polymer battery and a lithium ion battery
Advantages of lithium batteries and nickel-metal hydride batteries
Why can't mobile phones use dry batteries