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# 10 Examples of Circuits in Series

September 17, 2023
written by Qamar Zaman

Circuits in series are configurations where components are connected end-to-end creating a single pathway for current to flow through. Examples include voltage dividers, current sources, and electronic switches.

## Examples of circuits in series

Here are ten examples of circuits in series.

### 1. Christmas Lights

Christmas Lights are very common examples of circuits in series. In a string of Christmas lights, each bulb is connected in series. If one bulb burns out, it breaks the circuit, but the rest of the bulbs stay lit.

### 2. Flashlights

Flashlight circuits often consist of a series arrangement of batteries and a light bulb. When the switch is closed, the current flows through the batteries and the bulb in series, causing it to light up.

### 3. Old-Style Holiday Lights

Older holiday lights, such as incandescent ones, are connected in series. If one bulb fails, it interrupts the entire circuit, causing the whole string to go out.

### 4. Resistors in Series

Â In electronic circuits, resistors can be connected in series to increase total resistance. The current flows through each resistor consecutively.

### 5. Fairy Lights

Like Christmas lights, fairy lights often have bulbs connected in series. If one bulb fails, it breaks the circuit for that section while the rest continue to work.

### 6. Amplifier Input and Output Stages

Â In audio amplifiers, the input and output stages may contain components connected in series to achieve specific signal processing.

### 7. Electrical Heating Elements

Heating elements in appliances like ovens and toasters are often connected in series. Electricity flows through the details, converting electrical energy into heat.

### 8. Light Bulbs in Series for Dimming

In some lighting applications, light bulbs are connected in series to allow for dimming by reducing the voltage across the entire series circuit.

### 9. Antenna Tuners

In radio communication equipment, antenna tuners may use inductors and capacitors connected in series to adjust the impedance and match the antenna to the transmitter.

### 10. Series RC Filter

RC (resistor-capacitor) circuits connected in series are used as high-pass or low-pass filters in electronic applications to allow or block specific frequency ranges.

Circuits in series have the advantage of providing a cumulative effect on certain electrical properties like resistance, but they have the disadvantage of being sensitive to any interruptions in the circuit since a single break can interrupt the entire flow of current.

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