I  Lnited  States  Dept.  of  the  Air  Force.  II.  National  Audi-
ovisual Center.  Ill  Title.  Solid  state  diodes  (Motion  pic-
ture]

74-704502
[TK7871.86]

621.3815
Njtional  Audiovisual  Center

74


Diodes  and  rectifier  circuits — solid  state  principles.
[Motion  picture]     US.  Dept.  of  the  Air  Force.  1967.
Released  by  National  Audiovisual  Center.
20  min      sd      b&w       16  mm,

SUMMARY:  Explains  the  principles  of  AC  and  DC  cur-
rent in  solid  state  diodes  and  rectifiers.  Uses  schematics  to
show  resistance  and  voltage  flow.  Reviews  chemical  and
material  makeup  of  donor  and  acceptor  atoms  and  defines
conductors,  semiconductors,  and  insulators.
1.  Diodes.  Semiconductor.  2  Semiconductor  rectifiers.
I,  United  Slates.  Dept,  of  the  Air  Force.  11.  National  Audi-
ovisual Center,

75-702857*
(TK787I.86]


621.3815


National  Audiovisual  Center


Diploma  or  dropout — it's  your  choice.  [Filmstrip]
RMI  Film  Productions.  Released  by  RMl  Educa-
tional Films.  1975.
73  fr,     color      35  mm         and  phonodisc:  2  S-.  12  in.,  33
1/3  rpm..  21  min      (Choosing  careers)
Also  issued  with  phonotape  in  cassette.
CREDITS:  Advisers.  James  R    Harris.  Waiter  M,  Burks.
SUMM.'\RY:  Stresses  the  importance  of  gaining  a  high
school  diploma.  Shows  how  a  diploma  is  often  a  minimum
requisite  for  job  qualification,  adequate  lifetime  earnings,  and
personal  satisfaction,

1,  Education.  Secondary.  2.  Vocational  guidance.  I.
RMl  Film  Productions.  11.  RMI  Educational  Films,  III
Series:  Choosing  careers   [Filmstrip),

75-733932
cLB1607]

371.4
RMI  Film  Productions  75


Direct  current  generators.  [Motion  picture]  U.S.
Dept.  of  the  Air  Force.  Released  by  National  Audi-
ovisual Center  [197-?]

22  min.     sd.     b&w.      16  mm.
Kinescope.
SUMMARY':  Identifies  parts  of  the  basic  DC  generator.
Defines  steady  DC.  pulsating  DC.  and  ripple.  Discusses  sche-
matics of  three  main  DC  generator  configurations.
1,  Dynamos— Direct  current,  I.  United  States.  Dept.
of  the  Air  Force.     11.  National  Audiovisual  Center.
