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Mobile Electronics Basics - Ohm's Law, Diodes, Relays, Resistors

Knowledge of diodes, Ohm's law, relays, and resistors is essential to being a proficient alarm and car audio installer.

For example, with just relays and a few diodes, you can build a circuit to work with your existing alarm or keyless entry to start your vehicle. Add a capacitor and a resistor to a relay and a diode and you've created a timer to use with it. Or, by adding a relay to your head unit's remote turn on wire, you can turn on several amplifiers, processors, lights, etc.

With Ohm's Law, you can calculate current, power, voltage, and resistance such as the nominal impedance load of multiple speakers to an amplifier, and much more.

Once you master these, you'll think of all kinds of things to create and add to your systems as well as your customers'.


Diodes

click here to learn about diodes
Ohm's Law

click here to learn about Ohm´s Law
Relays

click here to learn about relays
Resistors

click here to learn about resistors


Mobile Electronics Basics:
Diodes
Glossary of Terms and Definitions
Ohm's Law
Recommended Wire Sizes
Relays
Resistors
Tools and Equipment

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Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.
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