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Section 1: Seismo-Quake® LSBC

Name

Seismo-Quake® Light, Switch and Battery Circuit


Order #

SQ9PRD


Package Dimension

267 x 180 x 80 millimeters (10.68 x 7.2 x 3.2 inches)


Availability

Now


Language

English


What is the Seismo-Quake® LSBC ?

Seismo-Quake® Light, Switch and Battery Circuit provide an excellent platform to broaden knowledge of a basic electrical circuit. Various loads may be controlled from different locations. Electrical power is supplied from batteries to power a light.


Architecture

Circuit

The circuit diagram below comprise one LED with its series resistor, one switch On / Off single-pole-single-through and a battery pack. The same light may be controlled from multiple locations, with more than one switch. Learn more about calculating the resistance value of the LED series resistor by viewing this PDF file LED Series Resistor Calculation PDF referenced by www.seismoquake.com.

Components for the Seismo-Quake® Light, Switch and Battery Circuit.
Black and white copy of the above

The circuit diagram below comprise one lamp, one switch On / Off single-pole-single-through and a battery pack. The same light may be controlled from multiple locations, with more than one switch.

Components for the Seismo-Quake® Light, Switch and Battery Circuit.
Black and white copy of the above


Components

A switch in the open position will cause no current to flow through the circuit. A switch in the closed position will cause current to flow through the circuit. Common switch types are single-pole-single-through or double-pole-double-through.

Components for the Seismo-Quake® Light, Switch and Battery Circuit.
Black and white copy of the above


Batteries

When developing a battery the aim is to produce a battery that will deliver current at a constant voltage. Single cell batteries can be configured in series to provide higher voltage. Single cell batteries configured in parallel provide lower voltage but higher current. A voltaic cell is also known as a galvanic cell. Common single cell batteries are zinc-carbon (also known as The LeClanché cell or dry cell), alkaline, nickel-cadmium (NiCd), nickel metal hydride (NiMH), lithium-ion (Li-ion). Batteries and wiring can also be configured to produce a negative supply voltage.

Graphical representation of battery types for the Seismo-Quake® Light, Switch and Battery Circuit.
Black and white copy of the above


Redox

When an element (can be an atom or ion or molecule) gain electrons the reaction is called reduction, the element is reduced. The oxidation number of the element decrease.

When an element (can be an atom or ion or molecule) loose electrons the reaction is called oxidation, the element is oxidized. The oxidation number of the element increase.

Redox reactions or oxidation-reduction has to do with the transfer of electrons and the two reactions happen one after the other (in tandem). Examples where oxidation-reduction reactions are found:

  • Bacteria has the ability to convert N2 in the atmosphere for example to NH4+.
    In our human bodies our lungs convert oxygen to water (H2O) and carbon dioxide (CO2) by breathing. A large molecule hemoglobin that contain Fe2+ is part of this process.
    Green plants convert water to O2 by photosynthesis.
  • Corrosion is the oxidation of a metal surface to its oxide. The elements that are part of this process are water, oxygen and the metal (iron, aluminum). Water on the surface of the metal form an electrochemical cell and reduced oxygen that is present in the air provide the oxide.
  • Redox reactions are also found in a battery where an electrochemical process take place that cause a current (electrons) to flow at a constant voltage.
  • By applying electricity metals can be prepared or purified or plated in industrial processes.

At the anode of an electrochemical cell, oxidation take place and at the cathode of an electrochemical cell, reduction take place. Electrons are produced at the anode of the battery and this terminal has a negative charge. Electrons are used at the cathode of the battery and this terminal has a positive charge. The terminal with a negative charge and the terminal with a positive charge are the electrodes of an electrochemical cell. For an electrochemical cell to function, it need an electrolyte to supply ions internally for conductance to take place between the positive and negative electrodes.

The negative electrode produce electrons to an external circuit and is oxidized in the discharge reaction. The positive electrode use the electrons from an external circuit and is reduced in the reaction.

Graphical representation of redox types for the Seismo-Quake® Light, Switch and Battery Circuit.
Black and white copy of the above

Read more: Theodore Brown, Eugene LeMay, Bruce Bursten, Catherine Murphy. 2009. Chemistry The Central Science. Pearson Education Ltd.: London ISBN 978 0 13 235 848 4





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The last time this page was modified, was: 8:17 pm, 29 May 2018

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Astronomy related links.
Science experiments in the oscillation of a single point of light !
Science experiments in electrophotography !
Science experiments with a lemon battery !
Links related to capacitors.
Links related to diodes.
Links related to LDRs.
Links related to LEDs.
Links related to voltage regulators.
Links related to resistors.
Links related to transistors.

Home
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