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Electrical Engineer | Digital Creator | Creating videos & pics, explaining science, engineering, renewable energy & climate change. Electrical 🧵 everyday.

Shorts

Stop guessing cable size.

Stop guessing cable size.

258,438 次观看

In Boolean algebra, De Morgan’s Laws help simplify logic circuits: 1. NOT (A · B) = A̅ + B̅ AND → OR, and invert each input. 2. NOT (A + B) = A̅ · B̅ OR → AND, and invert each input. Simple rule: Break the bar → change AND ↔ OR.

In Boolean algebra, De Morgan’s Laws help simplify logic circuits: 1. NOT (A · B) = A̅ + B̅ AND → OR, and invert each input. 2. NOT (A + B) = A̅ · B̅ OR → AND, and invert each input. Simple rule: Break the bar → change AND ↔ OR.

14,100 次观看

Water level indicator.

Water level indicator.

33,767 次观看

A simple DIY 3.7V li-ion battery charger circuit.

A simple DIY 3.7V li-ion battery charger circuit.

34,520 次观看

How to calculate the power required for a water pump. 1. Pump system The diagram shows a pump moving water from the suction side to the discharge side. H = Head: The height/distance the pump must lift the water. Suction: Where water enters the pump. Discharge: Where water leaves the pump. 2. Formula The formula used is: Where: P = Pump power in watts (W) ρ (rho) = Fluid density, for water 1000 kg/m³ g = Gravity, 9.81 m/s² Q = Flow rate in m³/s H = Pump head in meters η (eta) = Pump efficiency as a decimal 3. Given values The example gives: Flow rate Q = 75 m³/hour Head H = 30 m Water density ρ = 1000 kg/m³ Efficiency η = 70% = 0.70 First, convert the flow rate from m³/hour to m³/second: 4. Calculation Putting the values into the formula: This gives approximately: or: 5. Final answer The calculated pump power is 8.75 kW. In practical pump selection, you would normally choose a motor with some safety margin, so a motor larger than 8.75 kW may be selected depending on the pump's actual performance, starting conditions, and manufacturer specifications.

How to calculate the power required for a water pump. 1. Pump system The diagram shows a pump moving water from the suction side to the discharge side. H = Head: The height/distance the pump must lift the water. Suction: Where water enters the pump. Discharge: Where water leaves the pump. 2. Formula The formula used is: Where: P = Pump power in watts (W) ρ (rho) = Fluid density, for water 1000 kg/m³ g = Gravity, 9.81 m/s² Q = Flow rate in m³/s H = Pump head in meters η (eta) = Pump efficiency as a decimal 3. Given values The example gives: Flow rate Q = 75 m³/hour Head H = 30 m Water density ρ = 1000 kg/m³ Efficiency η = 70% = 0.70 First, convert the flow rate from m³/hour to m³/second: 4. Calculation Putting the values into the formula: This gives approximately: or: 5. Final answer The calculated pump power is 8.75 kW. In practical pump selection, you would normally choose a motor with some safety margin, so a motor larger than 8.75 kW may be selected depending on the pump's actual performance, starting conditions, and manufacturer specifications.

17,176 次观看

Bridge rectifier.

Bridge rectifier.

27,435 次观看

Proximity sensor.

Proximity sensor.

18,933 次观看

Current leads voltage in inductor. Voltage lags current in capacitor. No phase difference between current and voltage in resistor.

Current leads voltage in inductor. Voltage lags current in capacitor. No phase difference between current and voltage in resistor.

25,060 次观看

IR proximity sensor circuit Used an infrared LED to send out invisible light & a receiver to detect reflections. When an object comes close, the reflected IR light is sensed and the circuit gives an output signal. It’s commonly used for obstacle detection and automatic systems.

IR proximity sensor circuit Used an infrared LED to send out invisible light & a receiver to detect reflections. When an object comes close, the reflected IR light is sensed and the circuit gives an output signal. It’s commonly used for obstacle detection and automatic systems.

19,811 次观看

Carlo Anceloti after that Rodrygo goal. @rodrygogoes001 Real Madrid C.F. Real Madrid C.F.en

Carlo Anceloti after that Rodrygo goal. @rodrygogoes001 Real Madrid C.F. Real Madrid C.F.en

42,849 次观看

Videos

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Walking barefoot can stimulate the nerves in your feet, improve sensory awareness and balance, and provide a relaxing outdoor experience. Barefoot → sensory stimulation + relaxation + connection with nature

Walking barefoot can stimulate the nerves in your feet, improve sensory awareness and balance, and provide a relaxing outdoor experience. Barefoot → sensory stimulation + relaxation + connection with nature

186,163 次观看 • 12 天前

Full bridge rectifier.

Full bridge rectifier.

199,260 次观看 • 1 个月前

1.5mm2 thin wire for lights vs air conditioner.

1.5mm2 thin wire for lights vs air conditioner.

216,650 次观看 • 1 个月前

Why cable burn without tripping the breaker?

Why cable burn without tripping the breaker?

77,182 次观看 • 23 天前

House energy management MATLAB simulation.

House energy management MATLAB simulation.

23,293 次观看 • 27 天前

Ohm's law as linear equation.

Ohm's law as linear equation.

78,483 次观看 • 4 个月前

Neutral and earth serve different purposes. Neutral carries normal return current; earth is for fault protection. They are bonded at the designated point of the electrical system, but downstream they should remain separate. Neutral = return path Earth = safety path

Neutral and earth serve different purposes. Neutral carries normal return current; earth is for fault protection. They are bonded at the designated point of the electrical system, but downstream they should remain separate. Neutral = return path Earth = safety path

17,879 次观看 • 1 个月前

An AC doesn’t create cold; it removes heat. The refrigerant absorbs heat from indoor air through the evaporator coil, then releases that heat outside through the condenser. The cooled air is circulated back into the room.

An AC doesn’t create cold; it removes heat. The refrigerant absorbs heat from indoor air through the evaporator coil, then releases that heat outside through the condenser. The cooled air is circulated back into the room.

21,586 次观看 • 1 个月前

Solar light tracker circuit.

Solar light tracker circuit.

22,361 次观看 • 2 个月前

There is no single value for every installation. A common target is ≤5Ω, while sensitive systems may require ≤1Ω. The correct value depends on the earthing system, fault protection, soil, and applicable electrical standards. Lower resistance = better fault-current path.

There is no single value for every installation. A common target is ≤5Ω, while sensitive systems may require ≤1Ω. The correct value depends on the earthing system, fault protection, soil, and applicable electrical standards. Lower resistance = better fault-current path.

19,359 次观看 • 1 个月前

10kW Load: 3-Phase vs Single-Phase For the same 10kW load, a 3-phase supply draws much less current per conductor than single-phase. At 400V 3-phase: ≈14A/phase At 230 V single-phase: ≈43.5A Lower current can mean a smaller conductor size and lower losses.

10kW Load: 3-Phase vs Single-Phase For the same 10kW load, a 3-phase supply draws much less current per conductor than single-phase. At 400V 3-phase: ≈14A/phase At 230 V single-phase: ≈43.5A Lower current can mean a smaller conductor size and lower losses.

15,235 次观看 • 1 个月前

Earthing vs Neutral.

Earthing vs Neutral.

14,047 次观看 • 1 个月前

This is why transformers hum.

This is why transformers hum.

16,342 次观看 • 1 个月前

Learn how to use multimeter to check appliances like a Pro.

Learn how to use multimeter to check appliances like a Pro.

61,392 次观看 • 8 个月前

Inverter space vector PWM.

Inverter space vector PWM.

30,238 次观看 • 7 个月前

Electronic components.

Electronic components.

22,656 次观看 • 5 个月前

The PIC16F877A is an 8-bit microcontroller designed to execute control logic and manage peripheral data in embedded systems. It is primarily used in industrial automation, robotics, and consumer electronics to interface with sensors and control mechanical components.

The PIC16F877A is an 8-bit microcontroller designed to execute control logic and manage peripheral data in embedded systems. It is primarily used in industrial automation, robotics, and consumer electronics to interface with sensors and control mechanical components.

17,642 次观看 • 6 个月前

DC motor all you need to know about simply explained.

DC motor all you need to know about simply explained.

36,636 次观看 • 1 年前