Tuesday, January 19, 2016

Potentiometers Trimpots and Presets

Here are some images of types of Potentiometers or variable resistors. Pots or Potentiometers have a Shaft on which a knob can be fixed. These are used on Instrument panels to vary or control parameters like voltage, current, temperature etc. It is like a GUI element for Electrical and Electronic Systems. It is a basic Human Machine Interface and as old as Valve Radios. The Huge Rheostats are its ancestors but these giant pots are used in Large Electrical Circuits.

In Electronic Circuits Rotary Pots and Sliding Pots are the defaults. These days they have been replaced by digital controls and even touch interfaces.

In Instrumentation the Multi-Turn Wire Wound Precision, Linear Pots from Bourns or Spectrol are still used where a fine analog control is needed. Some Industrial Joysticks have also applied these.

The Single Turn Carbon Film Rotary and Sliding Pots are used today too for Volume control and Light dimming boxes. It was used in Analog TVs and Audio Systems for decades.

Potentiometers Trimpots and Presets

The Wire wound Instrument pots have good Temperature Stability and higher wattage and many operations. These make it useful in Industrial Process control. Some of the applications are in Timers and Motor Control. It is also used to set analog parameters in a control system.

Multi-Turn Trimpots and Single turn Presets are mounted on the PCB for Calibration or Adjustments of circuits. This is done using a Plastic Screwdriver called Tweaker. Some presets are dust proof. You have both the stable Metal Film and affordable Carbon Film. Vertical and Horizontal Mount.

delabs Technologies

Read More-


Basic Electronics
Basics of Electronics
Product Production
Work Discipline
Testing Points
Learning Electronics
Electronics Theory

Production Notes
Prototype Fabrication
Electrical Circuits

Scots Guide Electronics
Engineering - Wikibooks
Design Lab - Jim Svoboda
DC Circuits UOG
Socratic Electronics
Blobz Guide Electric Circuits

Product Design
Product Development
Constant Current Source
Good Voltage Regulators
Insulation Resistance
Digital Insulation Tester
DN Schematic PCB 04
DN Product Design 07

Hobby Circuits
VU Meter Circuits
LED brightness control
555 Incredible Chip
Process Control
liquid level measurement
Thermocouples and RTD
Design ADC Interface uC
Thermocouple Amplifier
IA Instrumentation 02
Temperature on DMM
Optical Proximity Switch
Analog Mux - Data Acquisition

Test Measurement
Instrumentation Automation
NI Test and Measurement
DMM Digital Multi Meter
Oscilloscope in T&M
IA Automation 01
Build Instruments
Tektronix T&M Equipment
Educators Corner – Agilent

Power Electronics
UPS Background
Transformer Connections
DN Power Electronics 03
DN Power Electronics 02
Half Bridge Convertor SG3525

Interfacing Microcontrollers
Embedded Process Control
80C31 8052 Microcontroller
Microprocessors and uC
Embedded Systems Design

Good Voltage Regulators
Relays and Contactors
Potentiometers Trimpots
Prototype Boards Types
Types of Capacitors
Types of Switches
Resistors How they Work
Coils Transformers SMPS
Mains Transformers Types
DN Components Selection 05

Tutor Gadgets
Count-Up Timer
Digital Logic Gates
Electronics Tutors

Teaching Instruments
Charles Proteus Steinmetz
Muntzing a Circuit Design
Teralab Electronics projects
Historical Instruments

Tables, Charts, Videos
Binary and Hex
Resistor Color Code
Ohms Law
Giga, Tera, Pico, Nano
High Resistance Materials

School - Analog Design
DN Analog Basics 06
DN Op-Amps 01
TI Semiconductors

Hobby DIY Garage