100K Preset Potentiometer - (Pack of 5)

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Component Name

100K Preset Potentiometer (Pack of 5)

Description

The 100K Preset Potentiometer is a variable resistor device that allows for precise adjustment of resistance values within a circuit. This pack of 5 preset potentiometers provides a convenient and cost-effective solution for prototyping, development, and production of various electronic projects. Each potentiometer is a compact, three-terminal device that offers a high degree of precision and reliability.

Functionality

The 100K Preset Potentiometer is designed to divide a voltage source into two parts, allowing the user to tap into a specific voltage point. The device operates by rotating the shaft, which changes the position of the wiper (the moving part of the potentiometer) along the resistive track. This movement varies the resistance between the center pin (wiper) and the two outer pins, enabling the user to set a specific voltage or resistance value.

Key Features

Resistance Value: 100 k (100,000 ohms)
Tolerance: 10%
Power Rating: 0.1 W (wattage)
Voltage Rating: 250 V (volts)
Rotation Angle: 300 (degrees)
Number of Turns: 30 turns (approximately)
Shaft Diameter: 6 mm (millimeters)
Body Diameter: 12 mm (millimeters)
Body Length: 25 mm (millimeters)
Lead Length: 35 mm (millimeters)
Operating Temperature: -20C to +70C (-4F to +158F)
Insulation Resistance: 100 M (megohms)

Packaging

The 100K Preset Potentiometer is supplied in a pack of 5 individual units, each with three leads (two outer pins and one center pin). The devices are packaged in a protective plastic bag to prevent damage during shipping and storage.

Applications

The 100K Preset Potentiometer is suitable for a wide range of applications, including

Audio equipment (volume controls, tone controls)

Industrial control systems (voltage dividers, signal conditioning)

Medical devices (analog circuits, patient monitoring systems)

Consumer electronics (TVs, radios, audio amplifiers)

Robotics and automation (sensor interfaces, motor control)

Additional Information

When using the 100K Preset Potentiometer, it is essential to follow proper handling and installation procedures to ensure optimal performance and longevity. This includes avoiding excessive force or bending of the shaft, using suitable mounting hardware, and keeping the device clean and dry.

Pin Configuration

100K Preset Potentiometer - (Pack of 5) Documentation
Pinout Explanation
The 100K Preset Potentiometer has three pins, which are:
Pin 1: Counter-Clockwise Terminal (CCW)
Function: Connects to the negative terminal of the voltage source or ground.
Description: This pin is the counter-clockwise terminal of the potentiometer. When the potentiometer is turned clockwise, the resistance between this pin and the wiper pin (Pin 3) increases, while the resistance between this pin and the center pin (Pin 2) decreases.
Pin 2: Center Terminal
Function: Connects to the voltage source or a reference signal.
Description: This pin is the center terminal of the potentiometer and is the connection point for the voltage source or reference signal.
Pin 3: Clockwise Terminal (CW) / Wiper
Function: Connects to the output signal or the circuit being controlled.
Description: This pin is the clockwise terminal of the potentiometer, also known as the wiper. When the potentiometer is turned clockwise, the resistance between this pin and the center pin (Pin 2) increases, while the resistance between this pin and the counter-clockwise terminal (Pin 1) decreases.
Connection Structure
To connect the 100K Preset Potentiometer, follow this general structure:
Connect Pin 1 (CCW) to the negative terminal of the voltage source (e.g., GND) or a grounded point in the circuit.
Connect Pin 2 (Center) to the voltage source (e.g., VCC) or a reference signal.
Connect Pin 3 (CW/Wiper) to the output signal or the circuit being controlled.
Example Connection Diagram
```
+---------------+
| Voltage |
| Source (VCC) |
+---------------+
|
|
v
+---------------+
| Center Pin |
| (Pin 2) |
+---------------+
|
|
v
+---------------+
| 100K Preset |
| Potentiometer |
+---------------+
|
|
v
+---------------+
| CW Pin (Pin 3) |
| (Wiper) |
+---------------+
|
|
v
+---------------+
| Output Signal |
| (or Circuit) |
+---------------+
|
|
v
+---------------+
| GND (Ground) |
+---------------+
^
|
|
+---------------+
| CCW Pin (Pin 1)|
+---------------+
```
Note: The above diagram is a general representation and might vary depending on the specific application and circuit design.
Remember to handle the potentiometer with care, as it can be damaged by excessive mechanical stress or electrical overstress. Follow proper installation and handling procedures to ensure reliable operation.

Code Examples

Component Documentation: 100K Preset Potentiometer - (Pack of 5)

Overview

The 100K Preset Potentiometer is a compact, adjustable resistor component used to divide a voltage signal and provide a variable output. This pack of 5 potentiometers is suitable for various IoT projects, prototyping, and electronic experiments.

Specifications

Resistance: 100K
 Power rating: 0.5W
 Operating temperature: -20C to 70C
 Adjustment type: Preset (trimpot)
 Number of turns: 25 turns
 Package: Pack of 5

Pinout

The potentiometer has three terminals:

Terminal 1 (CCW): Counter-clockwise terminal
 Terminal 2 (Wiper): Middle terminal (moving contact)
 Terminal 3 (CW): Clockwise terminal

Code Examples

### Example 1: Analog Voltage Divider with Arduino

In this example, we'll use the potentiometer to create an analog voltage divider circuit with an Arduino board.

```c++
const int potPin = A0;  // Analog input pin connected to the potentiometer's wiper
const int ledPin = 9;  // Digital output pin connected to an LED

void setup() {
  pinMode(ledPin, OUTPUT);
}

void loop() {
  int sensorValue = analogRead(potPin);  // Read the potentiometer's value (0-1023)
  int outputValue = map(sensorValue, 0, 1023, 0, 255);  // Map the value to 0-255 for the LED
  analogWrite(ledPin, outputValue);  // Set the LED's brightness based on the potentiometer's value
  delay(10);
}
```

### Example 2: Raspberry Pi (Python) and Voltage Control

In this example, we'll use the potentiometer to control the voltage output of a Raspberry Pi's GPIO pin using Python.

```python
import RPi.GPIO as GPIO
import time

# Set up GPIO mode
GPIO.setmode(GPIO.BCM)

# Define the potentiometer's wiper pin and the output pin
pot_pin = 17
out_pin = 18

# Set up the output pin as PWM
GPIO.setup(out_pin, GPIO.OUT)
pwm = GPIO.PWM(out_pin, 50)  # 50Hz frequency
pwm.start(0)  # Initial duty cycle of 0%

while True:
    # Read the potentiometer's value (0-1023)
    pot_value = int(input("Enter a value (0-1023): "))
    # Calculate the duty cycle based on the potentiometer's value
    duty_cycle = int((pot_value / 1023.0)  100)
    pwm.ChangeDutyCycle(duty_cycle)
    time.sleep(0.1)
```

### Example 3: Voltage Regulation with ESP32 (MicroPython)

In this example, we'll use the potentiometer to regulate the output voltage of an ESP32 board using MicroPython.

```python
import machine
import utime

# Define the potentiometer's wiper pin and the output pin
pot_pin = machine.Pin(32, machine.Pin.IN)
out_pin = machine.Pin(25, machine.Pin.OUT)

while True:
    # Read the potentiometer's value (0-1023)
    pot_value = pot_pin.value()
    # Calculate the output voltage based on the potentiometer's value
    out_voltage = int((pot_value / 1023.0)  3.3)  # 3.3V max output
    out_pin.value(out_voltage)
    utime.sleep(0.1)
```

Note: These code examples are for demonstration purposes only and may require adjustments based on the specific project requirements and hardware configurations.