Did you know that there are different ways to connect electrical components?
Today we explain to you the two main types of electrical connections: series and parallel, their differences and how they affect voltage and current.
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1. Connection in Series
In this type of connection, components (such as focal points or resistances) are connected one after another, forming a single path for the current.
Features:
• The current is the same for all elements of the circuit.
• Voltage is divided among elements according to their resistance.
• If one of the elements fails or disconnects, the entire circuit is interrupted.
Practical example:
In the image, the current in the serial circuit is 0.26 A (same for both lamps), but the voltage is distributed: only 2.57 V are measured.
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2. Connection in Parallel
Here, each component has its own path to the power source.
Features:
• The voltage is the same in all components.
• The current is divided between the different branches according to the load of each.
• If one component fails, the others continue to function, which is ideal for systems that require reliability.
Practical example:
The image shows a constant voltage of 4.94V in both lamps. However, the current splits, spreading between the branches.
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Which one is better ?
• Series: Simpler and consumes less cable, but less reliable.
• Parallel: Requires more wiring, but is more efficient and safe.
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Bottom line:
Understanding these concepts is essential for any electrical technician or enthusiast. The type of connection you choose directly affects how your circuit works!
Today we explain to you the two main types of electrical connections: series and parallel, their differences and how they affect voltage and current.
⸻
1. Connection in Series
In this type of connection, components (such as focal points or resistances) are connected one after another, forming a single path for the current.
Features:
• The current is the same for all elements of the circuit.
• Voltage is divided among elements according to their resistance.
• If one of the elements fails or disconnects, the entire circuit is interrupted.
Practical example:
In the image, the current in the serial circuit is 0.26 A (same for both lamps), but the voltage is distributed: only 2.57 V are measured.
⸻
2. Connection in Parallel
Here, each component has its own path to the power source.
Features:
• The voltage is the same in all components.
• The current is divided between the different branches according to the load of each.
• If one component fails, the others continue to function, which is ideal for systems that require reliability.
Practical example:
The image shows a constant voltage of 4.94V in both lamps. However, the current splits, spreading between the branches.
⸻
Which one is better ?
• Series: Simpler and consumes less cable, but less reliable.
• Parallel: Requires more wiring, but is more efficient and safe.
⸻
Bottom line:
Understanding these concepts is essential for any electrical technician or enthusiast. The type of connection you choose directly affects how your circuit works!
What is a simple DC electrical circuit?
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A simple electrical circuit is the most basic form of an electrical system, and it is ideal for learning the fundamental principles of electricity. This type of circuit works on DC, that is, electricity flows in a single direction from a power source, like a battery.
Components of the circuit and their functions:
1. Drums:
It's the power source of the circuit. It provides continuous current, i.e., electrons move from the negative pole (–) to the positive (+). Without this fountain, the circuit wouldn't work.
2. Switch:
Allows the circuit to open or close. When the switch is off, the current flows and the bulb turns on. If the switch is on, the flow of electricity stops and the light bulb goes off. Its function is to control the flow of current.
3. Bulb:
It's the circuit exit device. Turn electricity into light and heat. When current flows through the filament of the bulb, it illuminates, indicating that the circuit is working properly.
4. Connection wires:
Although not mentioned directly, the cables represented in blue are essential. Connect all the components and allow power to circulate throughout the system.
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How does the circuit work?
When the switch closes, the path is completed for the electrons to move from the battery, pass the switch, reach the bulb and return to the battery. This generates a constant flow of current that causes the bulb to turn on. If the switch is on, the circuit is incomplete and there is no current flow, so the bulb remains off.
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⚠️⚠️⚠️⚠️
A simple electrical circuit is the most basic form of an electrical system, and it is ideal for learning the fundamental principles of electricity. This type of circuit works on DC, that is, electricity flows in a single direction from a power source, like a battery.
Components of the circuit and their functions:
1. Drums:
It's the power source of the circuit. It provides continuous current, i.e., electrons move from the negative pole (–) to the positive (+). Without this fountain, the circuit wouldn't work.
2. Switch:
Allows the circuit to open or close. When the switch is off, the current flows and the bulb turns on. If the switch is on, the flow of electricity stops and the light bulb goes off. Its function is to control the flow of current.
3. Bulb:
It's the circuit exit device. Turn electricity into light and heat. When current flows through the filament of the bulb, it illuminates, indicating that the circuit is working properly.
4. Connection wires:
Although not mentioned directly, the cables represented in blue are essential. Connect all the components and allow power to circulate throughout the system.
⸻
How does the circuit work?
When the switch closes, the path is completed for the electrons to move from the battery, pass the switch, reach the bulb and return to the battery. This generates a constant flow of current that causes the bulb to turn on. If the switch is on, the circuit is incomplete and there is no current flow, so the bulb remains off.
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This is Delay Stop Control Circuit. It combines a physical wiring diagram with its corresponding schematic representation to illustrate how a motor (or another load) can be started instantly and stopped with a time delay.
Here's a detailed description of the image:
Title: The image clearly states "Delay stop control circuit" at the top in a large, bold, yellow font with a black outline.
Components Illustrated (Physical Wiring Diagram - Top):
1. Circuit Breaker (Top Left): A blue and white double-pole circuit breaker is shown connected to the incoming power supply (presumably Line and Neutral).
2. Push Button SB1 (Normally Open - Top Center Left): A red push button labeled "SB1" is wired in series with the power supply to initiate the circuit.
3. Push Button SB2 (Normally Closed - Top Center Right): A green push button labeled "SB2" is wired in series within the control circuit to initiate the stop sequence.
4. Timer Relay (KT - Bottom Left): A black timer relay labeled "KT" with multiple terminals is shown. It has connections to the power supply and other components. The terminals are numbered (6, 5, 8, 7, 1, 2, 3, 4).
5. Contactor (KM - Center): A black contactor labeled "KM" with its coil terminals (A1, A2) and main contact terminals is depicted. The coil is energized to switch the main power to the motor (not explicitly shown but implied).
6. Auxiliary Relay (KA - Bottom Right): A red auxiliary relay labeled "KA" with its coil terminals (13, 14) and normally open/normally closed contact terminals (1, 2, 3, 4, 5, 6, 9, 10, 11, 12) is shown.
Wiring Connections (Physical Wiring Diagram - Top): The red and blue wires indicate the flow of electrical current.
- Power comes from the circuit breaker and goes through the normally open contact of SB1.
- When SB1 is pressed, power flows to the coil of the contactor (KM) and the coil of the auxiliary relay (KA), causing them to energize.
- The contactor (KM) closes its main contacts (not explicitly wired to a load in this diagram) to start the motor/load.
- The auxiliary relay (KA) has several contacts used for latching and controlling the timer.
- A normally open contact of KA is used to create a latching circuit around SB1, so the circuit remains energized even after SB1 is released.
- When SB2 (normally closed) is pressed, it interrupts the power to the coil of KA.
- A normally closed contact of KA then energizes the coil of the timer relay (KT).
- The timer relay (KT) starts its time delay. After the set time, its normally closed contact (connected in series with the coil of KM) opens, de-energizing the contactor (KM) and stopping the motor/load.
Schematic Diagram (Bottom): This is the ladder logic or control schematic representation of the same circuit.
- L and N: Represent the Line (Hot) and Neutral power supply.
- SB1: Normally open push button.
- KT: Coil of the timer relay.
- KA: Coil of the auxiliary relay.
- KM: Coil of the contactor.
- Contacts: Different types of contacts are shown:
- Normally open contact of KA in parallel with SB1 (latching).
- Normally closed contact of KA in series with the coil of KT (initiating the timer).
- Normally closed time-delayed opening contact of KT in series with the coil of KM (delaying the stop).
- Normally open contact of KA in series with the coil of KM (energizing the contactor).
Functionality of the Delay Stop Circuit:
1. Start: Pressing SB1 energizes the coils of KM and KA. KM closes its main contacts (starting the motor). KA's normally open contact latches the circuit.
2. Initiate Stop: Pressing SB2 de-energizes the coil of KA.
3. Delay: When KA de-energizes, its normally closed contact energizes the coil of KT, and the timer starts counting.
4. Stop: After the preset time delay of KT, its normally closed time-delayed opening contact opens, de-energizing the coil of KM, which in turn opens its main contacts and stops the motor/load.
Here's a detailed description of the image:
Title: The image clearly states "Delay stop control circuit" at the top in a large, bold, yellow font with a black outline.
Components Illustrated (Physical Wiring Diagram - Top):
1. Circuit Breaker (Top Left): A blue and white double-pole circuit breaker is shown connected to the incoming power supply (presumably Line and Neutral).
2. Push Button SB1 (Normally Open - Top Center Left): A red push button labeled "SB1" is wired in series with the power supply to initiate the circuit.
3. Push Button SB2 (Normally Closed - Top Center Right): A green push button labeled "SB2" is wired in series within the control circuit to initiate the stop sequence.
4. Timer Relay (KT - Bottom Left): A black timer relay labeled "KT" with multiple terminals is shown. It has connections to the power supply and other components. The terminals are numbered (6, 5, 8, 7, 1, 2, 3, 4).
5. Contactor (KM - Center): A black contactor labeled "KM" with its coil terminals (A1, A2) and main contact terminals is depicted. The coil is energized to switch the main power to the motor (not explicitly shown but implied).
6. Auxiliary Relay (KA - Bottom Right): A red auxiliary relay labeled "KA" with its coil terminals (13, 14) and normally open/normally closed contact terminals (1, 2, 3, 4, 5, 6, 9, 10, 11, 12) is shown.
Wiring Connections (Physical Wiring Diagram - Top): The red and blue wires indicate the flow of electrical current.
- Power comes from the circuit breaker and goes through the normally open contact of SB1.
- When SB1 is pressed, power flows to the coil of the contactor (KM) and the coil of the auxiliary relay (KA), causing them to energize.
- The contactor (KM) closes its main contacts (not explicitly wired to a load in this diagram) to start the motor/load.
- The auxiliary relay (KA) has several contacts used for latching and controlling the timer.
- A normally open contact of KA is used to create a latching circuit around SB1, so the circuit remains energized even after SB1 is released.
- When SB2 (normally closed) is pressed, it interrupts the power to the coil of KA.
- A normally closed contact of KA then energizes the coil of the timer relay (KT).
- The timer relay (KT) starts its time delay. After the set time, its normally closed contact (connected in series with the coil of KM) opens, de-energizing the contactor (KM) and stopping the motor/load.
Schematic Diagram (Bottom): This is the ladder logic or control schematic representation of the same circuit.
- L and N: Represent the Line (Hot) and Neutral power supply.
- SB1: Normally open push button.
- KT: Coil of the timer relay.
- KA: Coil of the auxiliary relay.
- KM: Coil of the contactor.
- Contacts: Different types of contacts are shown:
- Normally open contact of KA in parallel with SB1 (latching).
- Normally closed contact of KA in series with the coil of KT (initiating the timer).
- Normally closed time-delayed opening contact of KT in series with the coil of KM (delaying the stop).
- Normally open contact of KA in series with the coil of KM (energizing the contactor).
Functionality of the Delay Stop Circuit:
1. Start: Pressing SB1 energizes the coils of KM and KA. KM closes its main contacts (starting the motor). KA's normally open contact latches the circuit.
2. Initiate Stop: Pressing SB2 de-energizes the coil of KA.
3. Delay: When KA de-energizes, its normally closed contact energizes the coil of KT, and the timer starts counting.
4. Stop: After the preset time delay of KT, its normally closed time-delayed opening contact opens, de-energizing the coil of KM, which in turn opens its main contacts and stops the motor/load.
Source: Similar to the previous images, this one also originates from "DIY Electrical Wiring", as indicated by the logo and social media icons at the bottom.
In summary, this image clearly illustrates a delay stop control circuit using both a physical wiring diagram and its corresponding schematic. It demonstrates how to achieve an instant start and a time-delayed stop for an electrical load using push buttons, a contactor, an auxiliary relay, and a timer relay. This type of circuit is commonly used in industrial automation and control systems.
In summary, this image clearly illustrates a delay stop control circuit using both a physical wiring diagram and its corresponding schematic. It demonstrates how to achieve an instant start and a time-delayed stop for an electrical load using push buttons, a contactor, an auxiliary relay, and a timer relay. This type of circuit is commonly used in industrial automation and control systems.