Automated circuit simplification but very useful. All electric and highly reliable.
- When the water level drops, the automatic pump is turned on, and the water pump is automatically turned off. The electric circuit automatically turns the water level to work, setting the water level to turn on and off the machine is also very simple
- You can combine with water level sensor (water level display circuit): • Do it yourself circuit...
- The circuit that automatically turns on and off the machine is very safe when using 12v DC relay 12v power. You can use source 5v if use relay 5v. In addition, you can add a 1k-10k resistor to the B leg of the NPN S8050 transistor to reduce the current flowing to the B pin.
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