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Star delta control diagram This diagram is wrong start in a contact and timer 1 no contact & and NC contact
Hello, Where is the diagram? Bertus
bertus
Post #2
Jul 8, 2023
Forum:
General Power Chat
LOOKING FOR SOURCES - POWER SYSTEM
Hello, Perhaps the following books might interest you: https://archive.org/details/mgr-30062023-basic-beee https://archive.org/details/1-fundamentals-of-power-electronics-robert-w.-erickson/mode/2up Bertus
bertus
Post #2
Jul 5, 2023
Forum:
General Power Chat
Looking for advice on battery selection!
Hello, Do you have a datasheet of the led light bar? That way we can see how much current is needed. When we know the current, tha battery capacity can be calculated. Bertus
bertus
Post #2
Oct 19, 2022
Forum:
General Power Chat
rudiments of transformer
Hello, Have a look at the links of these pages: Transformers Transformer types Bertus
bertus
Post #2
Oct 15, 2022
Forum:
General Power Chat
SMPS
Hello, This has already been answered on AAC: SMPS, I am trying to understand smps circuit Bertus
bertus
Post #2
Oct 15, 2022
Forum:
Power Conversion
Are You Happy As An EE?
Hello, I am not an electrical engineer. I started at the firm I am working with repairing transmitters for NMR systems. Over the years the modules became to complex to repair onsite. Now they do exchange complete modules. I recently made a change in my career. I moved to an other department...
bertus
Post #2
Sep 3, 2022
Forum:
Off-Topic
What type of AC power cord connection is this?
Hello, The mains plug may also vary by country. The wiki has a nice page for that: https://en.wikipedia.org/wiki/Mains_electricity_by_country Bertus
bertus
Post #4
Aug 27, 2022
Forum:
Batteries & Power Supply Design
What type of AC power cord connection is this?
Hello, There is a IEC C5 plug on the end of the power cable, it connects into the IEC C6 connector of the power supply: Bertus
bertus
Post #2
Aug 25, 2022
Forum:
Batteries & Power Supply Design
Buck Converter Efficiency
Hello, The duty cycle does not tell all about the efficiency. The losses in the parts are not taken into account. The switching element (most times a mosfet) has a resistance. Also the used inductor will introduce losses. Bertus
bertus
Post #5
May 10, 2022
Forum:
Power Conversion
Use of figures
Hello, An other great site with a lot of information on capacitors can be found here: http://www.iequalscdvdt.com/ Bertus
bertus
Post #5
May 10, 2022
Forum:
General Power Chat
battery ratings
Hello, The following pages of the Battery University will give you a lot of info: BU-201: How does the Lead Acid Battery Work? BU-201a: Absorbent Glass Mat (AGM) BU-201b: Gel Lead Acid Battery BU-202: New Lead Acid Systems Bertus
bertus
Post #5
May 10, 2022
Forum:
Batteries & Power Supply Design
Transistor BC547 blowing out
Hello, @Niu_X_Tang , The used transistor is not a mosfet. The BC547 is a BJT, wich needs a base current to act as a switch. @simon mugo , Can you post a schematic, so we can see if the base current is enough to switch. Also, what current are you switching. The BC547 collector current is limited...
bertus
Post #3
May 8, 2022
Forum:
Power Management
Electrical products
Hello, Sorry, EE Power is a corporate enterprise and does its own evaluation of commercial products. Reviews and other forms of advertising are not allowed.
bertus
Post #2
Dec 9, 2021
Forum:
General Power Chat
DC-DC Converter Topology
Hello, 1kW is a lot of power. At 12 Volts it would mean a current of 83.33 Amp. At the input of 2.7 Volts it would mean a current of about 400 Amp. What would be in input source? How long would the 1 kW be mentained? Bertus
bertus
Post #2
Aug 1, 2021
Forum:
Batteries & Power Supply Design
Rechargeable Lithium-Ion Batteries
Hello, Have a look at this page: https://batteryuniversity.com/article/bu-409-charging-lithium-ion Take a close look at figure 3. Bertus
bertus
Post #2
Jul 30, 2021
Forum:
Batteries & Power Supply Design
Which is the right forum for ...
Hello, It depends of the nature of your questions. When you have some general electronic questions, you could have a look at our partner sites Electronics Point or All About Circuits. https://www.electronicspoint.com/forums/ https://forum.allaboutcircuits.com/ Bertus
bertus
Post #3
May 14, 2021
Forum:
General Power Chat
Boost Converter Calculator Needed
Hello, Have a look at the following pages: https://eepower.com/tools/dc-dc-circuit-calculator/ https://www.daycounter.com/Calculators/Switching-Converter-Calculator.phtml Bertus
bertus
Post #2
May 13, 2021
Forum:
Power Conversion
Inductor Value
Hello, What would be the application for the inductor? Coilcraft has a lot of application notes on inductors: https://www.coilcraft.com/en-us/resources/application-notes/ Bertus
bertus
Post #2
May 8, 2021
Forum:
General Power Chat
Python
Hello, I assume you mean the python programming language. https://en.wikipedia.org/wiki/Python_%28programming_language%29 The best site to download python is the origenal site of python: https://www.python.org/ It is likely also available in many linux distributions. Bertus
bertus
Post #2
May 7, 2021
Forum:
Batteries & Power Supply Design
Power Bank Not Working
Hello, Here is the datasheet. Bertus
bertus
Post #2
Apr 28, 2021
Forum:
Batteries & Power Supply Design
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