OEM/ODM Manufacturer Precision Casting Wax to Malta Manufacturer
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OEM/ODM Manufacturer Precision Casting Wax to Malta Manufacturer Detail:
Precision Casting Wax mainly is used for precision mechanical process with zero allowance or very limited allowance. We can not adopt general casting technique, but can only adopt zero allowance casting or precision casting. Because of the product’s structure is very delicate and complex especially in bejeweled with golden and silver, such as diamond ring, brooch, earring etc.
The characteristics of precision casting wax are: good coating property, no denaturalization to be heated, good flow ability, good thermal stability, and well surface finish.
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We believe that long time period partnership is a result of top of the range, value added services, rich expertise and personal contact for OEM/ODM Manufacturer Precision Casting Wax to Malta Manufacturer, The product will supply to all over the world, such as: Rotterdam , The Swiss , Latvia , We warmly welcome domestic and overseas customers to visit our company and have business talk. Our company always insists on the principle of "good quality, reasonable price, the first-class service". We have been willing to build long-term, friendly and mutually beneficial cooperation with you.
A short video on how actuators and control box are place inside a hospital bed. For more details and enquiries contact BIBUS INDIA sales team sales@bibus.in [ https://www.bibus.in/products-solutions/mech/linear-technology/light-duty-linear-actuators-and-lifting-columns/ ]
A quick video showing the single channel fan controller I made with an arduino. When I get the code simplified I will make this a 4-channel device and use it on my PC to control the fans for the liquid cooling loops.
Credit on the circuit goes to Oscar Gonzalez @ bricogeek.com. He designed the circuit using a CNY75 optocoupler to isolate the Arduino from the 12V that is needed to run the fan. From there, I used a 2SC1384 transistor to amplify the PWM signal from the optocoupler. My fan doesn’t like PWM output and makes a high-pitched whining noise, so I used a 220uF capacitor across the motor leads to flatten the PWM output. Not a great solution, but it will work until I can find something better.
Temp sensing comes from an LM35, however since I mostly deal in Fahrenheit, an LM34 would have worked better and eliminated some code for conversion. Trip points are set at 75 for fan shutoff, 85 for fan startup, and 90 for maximum. Once the temp has reached 85, it is dynamically adjusted from 15% – 100% between 75 and 90. Once it drops below 75 it shuts down.
Revision:
I have modified the circuit a bit to drive a larger load using a MOSFET instead of the 2SC1384 NPN Transistor. By increasing the PWM frequency of the ATmega’s timer1 frequency to 31.25kHz the fan whine has been eliminated.
Source code can be found here:
https://pastebin.com/ZRbuetwM
