This circuit uses four BJTs – 3 NPN and 1 PNP high current to drive the load. It has two touch pads, one for On and one for Off. I don’t see any information about the power supply voltage or load current. Some maximum voltage and current should be given for the circuit as shown.
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It’s a short video of a large cylinder with hundreds of contacts and wire brushes arcing while contacting the cylinder. Controls a sign with hundreds of lights. https://www.facebook.com/61561207012586/videos/735904489084480/?mibextid=9drbnH&s=yWDuG2&fs=e
The question for the generation of the near future will be: “Do you think believe your childhood was better without humanoid robots, like todays teenagers have?” https://www.facebook.com/UnknownFactsByGenmice/videos/1331407887947262/?mibextid=9drbnH&s=yWDuG2&fs=e
This system uses a heater and cooler that is fixed with transfer into moving fluids. I wonder if they have tried changing it to a system where the heater and cooler is like a regular refrigerator where the heater and cooler moves around with the transfer into fixed locations. So the magnetothermal metal would move.
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Derek Veritasium shows us how QR codes work. He pronounces the a in Veritasium like the a in tassel. https://www.facebook.com/reel/2506467346230147?mibextid=9drbnH&s=yWDuG2&fs=e
The A3144 Hall Effect sensor short video, shows pinout, circuit. A3144 has a built-in schmitt trigger. The output is switched to ground. https://www.facebook.com/reel/1024280052731640?mibextid=9drbnH
This is a simple charge controller that includes a dump load to dissipate excess power from the PV panel. D1 is the reference voltage that feed the 393 comparators, and its forward voltage changes with temperature. It would be better to use a low power LM317 to give a stable 1.25 volts. Instead of a
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For each direction of travel, it consists of two solar cells connected in parallel opposing to a motor that’s geared down to turn the tracking so both solar cells are in the shade. https://www.facebook.com/reel/7341922389263306?mibextid=9drbnH&s=yWDuG2&fs=e
The city of Esbjerg, Denmark is replacing its coal fired city heating system with an amazing giant heat pump, biomass boilers and waste burning boilers. The refrigerant is CO2. Read the description. This is a long 43 minutes but is very comprehensive and interesting. The cost is about 40 million Euros.
These autonomous laser devices can be working in the fields around the clock. They could severely reduce the need for herbicides (weed killer chemicals), and insecticides which are also harmful to good insects and other animals and pollute the environment. It’s highly unlikely that a weed will become resistant to a Laser! They can be
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