ElectronicsClass: Difference between revisions
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== Electronics Class == | == Electronics Class == | ||
This class is targeted at the beginner who wants to learn electronics. It would make a fine prerequisite to the [[AVRMicrcontrolerClass]] or the [[HAMClass]] | |||
===Required Materials=== | ===Required Materials=== | ||
* Soldering Iron (25-30w) | |||
* Solder ( 22ga ) | |||
* Bread Board ( or [[AshClassBoard]] ) | |||
* wire 24ga | |||
* Blue smoke lab 0 30ga solid core wire. | |||
* Resistors 10kohm | |||
* variable resistor 10kohm linear | |||
* switch | |||
* leds (various) | |||
* pn2222 transistor | |||
* lm386 audio amplifier ic | |||
* 1/8 male phono jack | |||
=== Class Topics === | |||
*Read The Fine Manual: They hide the secrets in the documentation. | |||
====Metering==== | |||
There are many like it but this one is mine. | |||
* Naming of parts | |||
** metering modes | |||
*** restistance - Ohms of resistance | |||
*** voltage - Volts | |||
*** Current - Amps/Milliamps - check the leads | |||
*** diode check - see [Diodes] | |||
** leads - plugged into the right ports? | |||
* Continuity testing | |||
** set the meter to the lowest resistance mode (200ohms or auto resistance) | |||
** reads "off scale" when the leads are unconnected, this is an open circuit | |||
** reads near 0 if the leads are crossed | |||
====Soldering==== | |||
Heat, beat and treat: Soldering ( for our purposes ) is the process of joining electrical contacts with a low melting point metal to make a mechanically and electrically strong connection. | |||
* Restrain long hair/clothing/jewelry. | |||
* Clean both parts of waxes, oils or debris. | |||
* Mechanically fit connections together | |||
* Clean and wet the iron | |||
* Heat both parts until hot | |||
* Apply just enough solder to wet the contact surfaces | |||
* Wait for the connection to shine smoothly | |||
* remove the iron an test the connection | |||
** the meter should find near 0 ohms of resistance between the two parts even when mechanically stressed. | |||
** the meter should read "off scale" to everything that should be isolated | |||
====Switch==== | |||
* use the meter to diagram the electrical layout of the switch. | |||
* solder the switch to the board. | |||
====Wire==== | ====Wire==== | ||
The basic wire is a pipe through which electrons can flow from the lowest voltage side to the highest. (conventional current huh? [http://en.wikipedia.org/wiki/Electric_current]). This works up to the physical limits of the wire, when yoy | |||
*Current limit via wire gauge | |||
*Voltage limit via insulation. | |||
====Resistor==== | ====Resistor==== | ||
Resistance = Ohms | Resistance = Ohms | ||
[Ohm's law[http://en.wikipedia.org/wiki/Ohm%27s_law]] | |||
====Light Emitting Diode==== | ====Light Emitting Diode==== | ||
====Motor==== | ====Motor==== |
Revision as of 16:39, 6 January 2009
Electronics Class
This class is targeted at the beginner who wants to learn electronics. It would make a fine prerequisite to the AVRMicrcontrolerClass or the HAMClass
Required Materials
- Soldering Iron (25-30w)
- Solder ( 22ga )
- Bread Board ( or AshClassBoard )
- wire 24ga
- Blue smoke lab 0 30ga solid core wire.
- Resistors 10kohm
- variable resistor 10kohm linear
- switch
- leds (various)
- pn2222 transistor
- lm386 audio amplifier ic
- 1/8 male phono jack
Class Topics
- Read The Fine Manual: They hide the secrets in the documentation.
Metering
There are many like it but this one is mine.
- Naming of parts
- metering modes
- restistance - Ohms of resistance
- voltage - Volts
- Current - Amps/Milliamps - check the leads
- diode check - see [Diodes]
- leads - plugged into the right ports?
- metering modes
- Continuity testing
- set the meter to the lowest resistance mode (200ohms or auto resistance)
- reads "off scale" when the leads are unconnected, this is an open circuit
- reads near 0 if the leads are crossed
Soldering
Heat, beat and treat: Soldering ( for our purposes ) is the process of joining electrical contacts with a low melting point metal to make a mechanically and electrically strong connection.
- Restrain long hair/clothing/jewelry.
- Clean both parts of waxes, oils or debris.
- Mechanically fit connections together
- Clean and wet the iron
- Heat both parts until hot
- Apply just enough solder to wet the contact surfaces
- Wait for the connection to shine smoothly
- remove the iron an test the connection
- the meter should find near 0 ohms of resistance between the two parts even when mechanically stressed.
- the meter should read "off scale" to everything that should be isolated
Switch
- use the meter to diagram the electrical layout of the switch.
- solder the switch to the board.
Wire
The basic wire is a pipe through which electrons can flow from the lowest voltage side to the highest. (conventional current huh? [1]). This works up to the physical limits of the wire, when yoy
- Current limit via wire gauge
- Voltage limit via insulation.
Resistor
Resistance = Ohms [Ohm's law[2]]
Light Emitting Diode
Motor
Diode
Capacitor
Transistor
PN2222 N channel transistor
IC
LM386 Audio Amplifier [3]