|Pelletier's Home Inspection
Alfred Leo Pelletier, CMI, HI 36
Home Inspector State of Rhode Island
Providence 02901, West Warwick 02893, Coventry 02816, Rhode Island
State of Florida Licensed Home Inspector HI 36
Comprehensive, Four-Point, Pre-Listing Home Inspections
401-585-4951 *Rhode Island
We are Certified, Qualified and we care
|Transistors. Transistors come in several
different types and amplify electric current.
They can also turn electricity on or off.
|Resistors. Resistors control the flow of
electrical current, and are commonly
used to control volume in electronic
devices like TVs.
|Other Capacitors. While the electrolytic
capacitor are the most popular, other
common capacitor types include ceramic,
plastic film types and tantalum. They are
often less expensive than electrolytic
capacitors and better for electronics that
don't require intensity.
|Diodes. Diodes allow electricity to flow
in one direction and are usually used as
a form of protection. Above, the diodes
are red with resistors on the left.
|Light-emitting Diodes (LEDs). Basically,
LEDs are just tiny light bulbs that fit
easily into an electrical circuit. Some
uses of LEDs include forming the
numbers on digital clocks, transmitting
information from remote controls,
lighting up watches and telling you
when your appliances are turned on.
Collected together, they can illuminate a
|Inductors. An inductor is about as
simple as an electronic component
can get -- it is simply a coil of wire. It is
used in traffic light sensors. If you
team up an inductor with a capacitor
you create an oscillator.
|Oscillators. Oscillators move energy
back and forth between two forms to
create repetitive, predictable signals,
much like the pendulum in a grandfather
clock. A quartz watch like the one above
uses a quartz oscillator to keep track of
what time it is. An AM radio transmitter
uses an oscillator to create the carrier
wave for the station and there are also
oscillators in computers, metal
detectors and stun guns.
Circuits. An integrated circuit, also
called a chip, may contain millions of
transistors and other components
surrounded by a plastic or ceramic
case. It connects to a circuit board via
the metal pins seen above. Chips are
often used in cars, computers,
calculators and more.
|Microcontrollers. Most modern electronic
devices -- TVs, VCRs, microwaves and
so on -- contain an embedded
microcontroller. It's basically a dedicated
|Microprocessors. A microprocessor --
also known as a CPU or central
processing unit -- is a complete
computation engine that is fabricated
on a single chip. Pictured above is the
back side of the Core i7 chip with
|Electric Motors. An electromagnet is
the basis of an electric motor. In your
house, almost every mechanical
movement that you see around you is
caused by an AC (alternating current)
or DC (direct current) electric motor.
|Brushless Electric Motors. In a brushless
DC motor (BLDC), you put the permanent
magnets on the rotor and you move the
electromagnets to the stator. Then you
use a computer (connected to
high-power transistors) to charge up the
electromagnets as the shaft turns.
|Relays. A relay is a simple
electromechanical switch made up of an
electromagnet and a set of contacts. Relays
are quite common in home appliances
where there is an electronic control turning
on something like a motor or a light.
|Power-cube Transformers. The purpose of a
transformer is to convert one AC voltage to
another AC voltage. A typical home probably
has five to 10 of these little transformers
plugged into the wall at any given time, and
they are used with printers, speakers, cell
phone chargers, electric drills and more.
|Electrolytic Capacitors. Capacitors are like
batteries, but they dump their entire charge
in a tiny fraction of a second, where a battery
would take minutes. They are commonly
used for anything that requires a flash, such
as a camera. They can also be used to even
out voltage or block DC current.
|Animated diagram showing the operation of a tuned circuit (LC
circuit). The capacitor stores energy in its electric field E and the
inductor stores energy in its magnetic field B (green). This jerky
animation shows "snapshots" of the circuit at progressive points in
the oscillation. The oscillations are slowed down; in an actual tuned
circuit the charge oscillates back and forth tens of thousands to
billions of times per second.
|The Heating Zones Control Systems are the designs of Alfred Pelletier. Electrical Circuits were
designed by Alfred to operate this system. Alfred built and installed these units. All plumbing,
electrical, installing these units, and testing was completed by Alfred Pelletier. Inspection pass local
and State of Rhode Island Inspection.
|Alfred Leo Pelletier
|Alfred Leo Pelletier
|HVAC / R