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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)
* Soldering Iron (25-30w)
Solder  ( 22ga )  
* Solder  ( 22ga )  
Bread Board ( or [[AshClassBoard]] )
* 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.


=== Class Topics ===
Read The Fine Manual
====Math====
Reading the PIV  Curve:
Design Constraints
====Wire====
====Wire====
Current limit via guage
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
Voltage limit via insulation
*Current limit via wire gauge
*Voltage limit via insulation.
 
====Resistor====
====Resistor====
  Resistance = Ohms
  Resistance = Ohms
  See Ohms law
  [Ohm's law[http://en.wikipedia.org/wiki/Ohm%27s_law]]
====Soldering====
====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?
  • 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]