Jump to content

All Activity

This stream auto-updates

  1. Earlier
  2. The light comes on when my washer is turned on. But it goes off after a while. There is no response when pressing the power button. After waiting for a few minutes, I heard the washing machine beeping. At this time, the power-on indicator light is on again. After a minute or two it goes off again. After a while, it can be turned on again, and the process is repeated. Check the machine, suspect that there is a problem with the main control board in the lower part of the machine, and dig out the circuit board. Found that there is no 5V output. It is suspected to be a problem with the power block Tny276. I don't have a replacement of the same model on hand. I used tny177 to go up. It can also be turned on. Not extinguished. I don't know if it will last long. Do I need to buy an original model and replace it?
  3. Once, one of our neighbors moved in and loaded up the furniture and stuff, which made him popular. Then there was a loud noise and a lot of people thought one of the pieces of furniture had fallen off, so no one checked. But out of curiosity, I went to the balcony and to my surprise the auto rickshaw had an accident and the driver was buried under the vehicle. After seeing it, I ran to the place with my father and moved the car. After 5 minutes, I was surprised that few people had gathered. So I came up with a project that lets people know their neighbors at the push of a button. Many people today are so busy with work that they can't check their surroundings, and people sometimes get discouraged or scared and don't know what to do next. With this in mind, I created a simple interface project to notify neighbors in case of an emergency. With the help of Arduino, GSM module, simple push button and other things, this project is possible. The mobile phone number and emergency alert message are predefined and stored in the Arduino. When a push button is pressed, an emergency alert message is sent to that number. People in emergency situations such as the elderly live alone Low blood sugar (hypoglycemia) chest pain / heart attack big haircut kick breathing, etc. 2. Theft/intruder incident 3. or unforeseen events other than the events mentioned above or natural disasters or environmental disasters.
  4. I need to replace a PNP BD140 (BD140 datasheet) as I'm restoring a power supply, however the replacement component has its base directly connected to the V+ via the diode bridge. I'm not sure if this is doable. I assumed the collector or emitter would receive the V+. Powered by an 18-volt source, a 100-volt transistor My suggestion is to connect the transistor "upside down," with the base on top of the pict, biased by some DC from the massive resistor soldered to the two big locations, and the emitter and collector permitting the DC from the power supply to the power amp IC.
  5. I have a dimm-pc 386-i and the program is broken. I searched the internet and found out that the bias information can be updated with a program called JRC1. I corresponded with the Kontron company, but they said that they do not support this module. I want to interact with it and change the bias information. can you help me?
  6. This is in depth details with images i guess we need to follow your instructions.
  7. What does TDA12156PS/N3/3 used for? I could not see which catalogue it is in. would like to know more the specification and functions about it. who can tell me? Thanks in advance.
  8. If you're using a multimeter, all bets are off above a few hundred Hz. Make yourself a smoothing filter with 10k and 1000uF and measure that. Also, check the datasheet of the 595, it's possible that the O_EN takes longer to propagate a turn-on than off; this would increase the duty cycle at high frequencies.
  9. Hi, Here is a article that you can find an answer to you issue, https://bde-ltd.com/electronic-switch-power-operations-explained/
  10. This seems to be a Multilayer Ceramic Capacitor MLCC 4.7 uF 16 VDC size 0805 https://gr.mouser.com/datasheet/2/281/GCM21BR71C475KA73_01-1968756.pdf Is this what you are looking for ?
  11. It's because it's partially depleted or possible damaged.
  12. Hopefully this is still helpful even after 6 year thanks
  1. Load more activity
  • Create New...