Appeal No. 95-3885
Application 08/172,051
a transistor for a set of constant base voltages as shown in
Figure 6. Shockley explains that Figure 6 shows that if the
current is increased, the voltage first rises toward a maximum
value and then drops producing a negative resistance.
Shockley then refers to Figure 1 which shows two
transistors 11 and 12 connected in parallel to show how these
transistors operate as described in Figure 6. Shockley shows
that an instability can occur if one of the transistors is in
a negative resistance condition. The instability will cause
one transistor to carry predominantly all the current while
the other carries practically no current.
Shockley then refers to Figure 3 to show his
invention which solves the instability by interposing a
distributed resistor, a layer of resistive material 27, in
series with the emitter current path. The resistive layer 27
is disposed over the surface of the transistor and over the
emitter region of the transistor. In column 4, line 68,
through column 5, line 25, Shockley discloses another
embodiment as shown in Figure 5 where the resistive layer is
provided by n- resistive layer 35 and n+ layer 36. Shockley
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