Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [fluid-pump]

For questions about electronics used with fluid pumps.

93 questions
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Troubleshooting Strange Circuit Behaviour...Missing Diode?

I've built this circuit to control a submersible pump with a PIR sensor. The circuit works as expected (the PIR sensor activates the mosfet, turning the pump on) but only after about 30 seconds from when power is initially turned on. Before that…
Seano
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How to power a 24 VAC pump with 24 VDC?

I want to power a 24 VAC vibration pump (48 W 50/60 Hz, often used in coffee machines), and control it with a microcontroller. I've got an existing system that is powered with 24 VDC. A standard DC-DC converter powers the microcontroller. I thought…
empewoow
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2 answers

Do pumps and motors also need flyback diodes?

So my question is simple, we know that its good practice to use flyback diodes in solenoid valves and relays, but do pumps and motors also need them as they also have coils?
Lord Voldemort
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3
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1 answer

Pump control - Uni or Bi polar stepper motor

I am working on a robot that includes several annular gear pumps. We are using the MZR 2521, manual: (please see section 5.5) http://www.micropump.com/support_documents/manual_mzr-xx21.pdf product…
user24158
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3
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1 answer

What power supply should I use for this 12 V peristaltic pump?

I have a project I am doing where I have to control three simple peristaltic pumps with an Arduino. Originally I started with cheap $13 6 V pumps powered with 9 V batteries which only worked for a day, then wouldn't even work when connected directly…
JG98
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3
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1 answer

What type of an induction motor is used in a single-phase non-inverter household refrigerator?

There are many pictures with the 2-phase non-symmetrical (start winding and main winding) on the internet in a single-phase non-inverter household refrigerator. What type of squirrel cage induction motor is used in a single-phase non-inverter…
Imyaf
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3
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2 answers

Preventing mains spikes from cheap water pump

I bought a pack of add-ons for my DIY CNC that has a water cooled spindle. One of the items was the water pump. But when I switch on the pump, a fairly substantial crack can be heard in any speakers that are turned on on the same circuit, as well as…
Kez
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3
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1 answer

Quiescent current of 12v brushless water pump

I couldn't find the datasheet to my Quioran QR50E water pump and I want to estimate if I can run an arduino and 4 of those on a battery for longer than a month. I don't know the quiescent current of the pump and I think it could be much more than…
Toma
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3
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1 answer

Replace 12V 2A centrifugal pump with 12V 1.4A peristaltic pump

I bought a liquid filling machine -http://a.co/d/8FMFWIU. There is a centrifugal pump model Dp 521 2Amps 12Volt. I want to replace this pump with a peristaltic pump. The pump is controller by a micro controller. The pumps that i find are rated as…
Codplay
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How can I model this water pump?

Consider this object. How can I model it in order to simulate with a circuit simulator driving this object with a MOSFET? I'm especially worried about inductive properties in order to avoid voltage peaks, I guess I can use an inductor with a series…
Felice Pollano
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1 answer

Pump undervoltage protection

I'm planning on building a solar powered pond filter for my koi pond and my setup goes like solar panel to charge controller to inverter module to pump. I have tested the setup and it works when the sun is shining. But there is one problem I…
Kokachi
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Can I run 460VAC 60Hz 3 phase rated motors on 380V 50Hz mains?

I have an upcoming project that is going to China which will be using 380Vl volt 50Hz. Will motors that I've used before which are rated for 460V 60Hz, be able to operate at 380V 50Hz? I've read online that as long as the voltage to frequency ratio…
Jackdiamond
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Have I gotten this attiny13 based MOSFET circuit correctly?

I am bit new to electrical engineering and I was hoping to get a sanity check on my reasoning! I want to design a low-powered (battery-driven) plant watering PCB. It uses an attiny13 as the switch for an IRF520 MOSFET and it will have three terminal…
Jonas Danielsson
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Relays for switching circuilation pumps

I have a board populated with Omron relays (G5Q-1A4-EU DC5) and I want to use them to switch circulation pumps (https://imp-pumps.com/pumps/ghn/). Is the previous relay appropriate to be used with said pumps? From the information available on the…
puq_87
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2
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2 answers

Pump power factor OK on mains, but low on generator

I'm working on a submerged pump application, running on 415V three-phase. I don't know for sure, but I believe the pumps are only a few KW. The customer is saying that the pumps run fine when the site is on mains power; but when it switches to…
Scott
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