Buy Resistors Online at the Best Price
                     POWERING CIRCUITS:
HOW RESISTORS AND
CAPACITORS MAKE IT WORK
INTRODUCTION
• Resistors and capacitors are essential 
components that control how electricity flows in 
a circuit.
• Resistors limit current, while capacitors store and release
electrical energy.
• Both help stabilize, filter and shape signals for 
smooth circuit performance.
• Together, they power everything from basic 
electronics to advanced devices.
WHAT ARE RESISTORS?
• Resistors are components that control and limit the flow 
of electric current in a circuit.
• They help protect devices, divide voltage, and ensure smooth
circuit operation.
• Available in various types and values, they are essential
in every electronic design.
• You can easily  buy   resistors   online  to use in DIY projects, 
repairs,
or professional applications.
WHY RESISTORS MATTER
• They prevent components from getting 
damaged by controlling current flow.
• They help set correct voltage levels in circuits.
• They stabilize and shape electrical signals for 
smooth operation.
• They enable precise control in everything from LEDs to
complex electronics.
TYPES OF RESISTORS
• Fixed Resistors – Provide a constant resistance 
value (e.g., carbon film, metal film).
• Variable Resistors – Allow resistance to be adjusted manually
(e.g., potentiometers, rheostats).
• Special Resistors – Designed for specific functions like 
high power or temperature response (e.g., wire-
wound, thermistors, LDRs).
• Surface-Mount Resistors (SMD) – Compact resistors used in
modern electronic devices and PCBs.
WHAT ARE CAPACITORS?
• Capacitors are electronic components that store and
release electrical energy in a circuit.
• They help smooth power, filter signals, and 
support stable performance in all types of devices.
• Available in different sizes and types, capacitors are 
essential for timing, tuning, and power management.
• You can easily  buy   capacitors   online  for projects, repairs, and
professional electronic applications.
WHY CAPACITORS
ARE ESSENTIAL?
• They store and release energy to keep circuits
stable and smooth.
• They filter out noise and improve signal quality.
• They help manage power flow during sudden 
voltage changes.
• They support timing, tuning, and frequency 
control in many electronic devices.
TYPES OF CAPACITORS
• Ceramic Capacitors – Small, stable, and widely used for 
general- purpose applications.
• Electrolytic Capacitors – High-capacity components ideal for
power supply filtering and energy storage.
• Film Capacitors – Reliable and durable, used in audio, 
motor run, and high-frequency circuits.
• Supercapacitors – Ultra-high capacity devices used for quick
energy charging and backup power.
RESISTORS IN REAL 
APPLICATIONS
• Used in LED circuits to control brightness and prevent 
damage.
• Help set voltage levels in sensors, microcontrollers, 
and power supplies.
• Stabilize signals in audio devices, radios, and 
communication circuits.
• Protect components by limiting current in chargers, adapters,
and home electronics.
CAPACITORS IN REAL 
APPLICATIONS
• Used in power supplies to smooth voltage and 
reduce fluctuations.
• Filter signals in audio systems, radios, and communication
devices.
• Provide quick energy bursts in camera flashes and 
electronic toys.
• Support motor startup, timing circuits, and frequency 
control in
appliances and machines.
CHOOSING THE RIGHT 
RESISTOR
• Select the correct resistance value based on 
how much current you need to control.
• Check the power rating to ensure the resistor can
handle heat without burning out.
• Choose the right tolerance for accuracy, 
especially in sensitive circuits.
• Pick a suitable type (carbon film, metal film, SMD) 
depending on space and application needs.
CHOOSING THE RIGHT 
CAPACITOR
• Choose the correct capacitance value based on how 
much energy storage or filtering your circuit needs.
• Check the voltage rating to ensure it can safely handle the 
applied
voltage.
• Select the right type (ceramic, electrolytic, film) for
stability, frequency, and application.
• Consider tolerance and temperature rating for reliable 
performance
in all conditions.
WHY BUY FROM TOMSON 
ELECTRONICS
•  Buy   quality   electronic   components   online  with trusted
product reliability.
• Wide range of resistors, capacitors, modules and 
accessories
for every project.
• Fast delivery, genuine parts, and excellent customer 
support.
• Perfect choice for students, hobbyists, 
makers and professionals.
CONTACT US
[email protected] 
www.tomsonelectronics.com 
8606650999