home *** CD-ROM | disk | FTP | other *** search
-
-
-
-
- ENGINEERING MADE EASY
- by I.M. Dorky
-
-
-
- Radio Engineering is not as hard as
- as people would lead you to believe.
- Almost all problems can be traced to
- a defect in the circuit board. All of
- the standard circuit boards have the
- same style components.
- A circuit board consists of six
- parts. The transformer is where the
- power originates. From here the spark
- travels along a metallic path to the
- various components on the board, until
- it reaches the outlet at the end of the
- circuit. If anything stands in the way
- of the circuit, like a defective part,
- the circuit is destroyed, causing the
- piece of equipment to blow up.
- The job of the engineer is replace
- these parts before the electric charge
- can reach them. This would be easy, ex-
- cept the only way to test the part, is
- to actually run power through the
- circuit while you are working on it. So
- you need to replace the parts while the
- current is actually running through the
- board, trying to replace parts before
- the electric charge reaches them.
- With that in mind you need to know
- how to fix various components on a cir-
- cuit board.
- The transformer never malfunctions,
- so you can immediately rule out that as
- the part that need replaced. The outlet
- at the end of the circuit board is also
- something that never breaks, so that is
- another item that needs no maintenance.
- That leaves light bulbs, set screw
- assemblies, transistors, and fuses. A
- good engineer needs spares of these in
- his toolkit. When an item such as the
- ones described above go bad, they have
- a tendency to take on a reddish color.
- You will need to replace these parts by
- the time the electron charge reaches
- part. If the cherge reaches the part on
- the board before it is replaced this is
- what will happen.
- For the fuse, the electron charge
- back up into the main unit, this will
- cause an intermittent loop of power in
- the main recoil mechanism, and the high
- voltage surge will destroy the piece of
- equipment.
- As for the light bulb, by not being
- able to replace it in time, the extra
- power races through the board and soon
- catches up with it's back end. This can
- and usually does cause a fire in the
- transformer flux-a-lator. When this oc-
- curs the power loop causes instant shut
- off of the main board, and the machine
- blows up.
- When a bad transistor is not fixed
- in time, a carbon build up on the ding-
- us homper occurs. When a dingus hopper
- comes in contact with any amount of
- carbon, the reversal of the magnetic
- polarity of the lead lined copulator is
- is going to occur, when this happens,
- you got a major breakdown.
- And finally the set screw assembly.
- In all piece of equipment, you have the
- set screw assembly, what this does is
- to set the screw to your assembly. If
- the set screw assembly is even a mili-
- meter of the screw setting, then your
- entire assembly is not set in the right
- screw mode. When this occurs the piece
- is not set, the assembly is not assem-
- bled, however the machine is screwed.
- This manual should help you in all
- tasks encountered in your role as chief
- engineer of a radio station. Remember
- if you keep the equipment running, you
- keep you job.
-