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Transistor Cross

K

Kjoseph621

Jan 1, 1970
0
I am trying to find a replacement transistor for some equipment built in the
early 1970's. It is a small transistor with the numbers X16A 5332. This was
used in a circuit that generated crowd like noise for an arcade baseball game.
Any help in what would work in it's place would be greatly appreciated. Thank
you. Joe
 
R

Robert Baer

Jan 1, 1970
0
Kjoseph621 said:
I am trying to find a replacement transistor for some equipment built in the
early 1970's. It is a small transistor with the numbers X16A 5332. This was
used in a circuit that generated crowd like noise for an arcade baseball game.
Any help in what would work in it's place would be greatly appreciated. Thank
you. Joe

A zener run at low current (say 100uA) would make an excellent noise
generator.
Transistors have never been made to specifically generate noise, and
(usually) only RF transistors have a noise spec to indicate how low
their noise is in Rf amplifier circuits.
If it is an NPN, then any other NPN will do; similarly for PNP.
However, if it is a Germanium transistor, replacement with a Silicon
transistor might require biasing adjustment - most especially in a
direct-coupled amplifier circuit.
The NTE cross-reference catalog #9 does not list it; a 5332 crosses to
a zener diode.
 
D

DarkMatter

Jan 1, 1970
0
A zener run at low current (say 100uA) would make an excellent noise
generator.
Transistors have never been made to specifically generate noise, and
(usually) only RF transistors have a noise spec to indicate how low
their noise is in Rf amplifier circuits.
If it is an NPN, then any other NPN will do; similarly for PNP.
However, if it is a Germanium transistor, replacement with a Silicon
transistor might require biasing adjustment - most especially in a
direct-coupled amplifier circuit.
The NTE cross-reference catalog #9 does not list it; a 5332 crosses to
a zener diode.


Actually, I think the noise was digital, and stored in a ROM on the
board. The chip is an audio output driver. It is a Q-MOS switch
driver. With digital pulses, it would put out fine juice for a
speaker. Most any video game I ever saw used digital sound. One
could always hear the ringing from the non sinusoidal waveforms.

Anyway, that MAY be the chip. Seems to be it.
 
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