<s>
A	O
tuned	B-Algorithm
amplifier	I-Algorithm
is	O
an	O
electronic	O
amplifier	O
which	O
includes	O
bandpass	O
filtering	O
components	O
within	O
the	O
amplifier	O
circuitry	O
.	O
</s>
<s>
Staggered	B-Algorithm
tuning	I-Algorithm
where	O
each	O
amplifier	O
stage	O
is	O
tuned	O
to	O
a	O
slightly	O
different	O
frequency	O
.	O
</s>
<s>
Synchronous	B-Algorithm
tuning	I-Algorithm
(	O
explained	O
in	O
more	O
detail	O
in	O
the	O
staggered	B-Algorithm
tuning	I-Algorithm
article	O
)	O
where	O
each	O
amplifier	O
stage	O
is	O
tuned	O
identically	O
.	O
</s>
<s>
This	O
scheme	O
maximises	O
the	O
amplifier	O
gain	O
but	O
has	O
narrower	O
bandwidth	O
than	O
staggered	B-Algorithm
tuning	I-Algorithm
.	O
</s>
<s>
Double-tuned	B-Algorithm
amplifier	I-Algorithm
.	O
</s>
<s>
This	O
scheme	O
is	O
used	O
on	O
amplifier	O
stages	O
that	O
are	O
transformer-coupled	O
rather	O
than	O
capacitor	O
coupled	O
.	O
</s>
<s>
Both	O
the	O
primary	O
and	O
secondary	O
coils	O
of	O
the	O
transformer	B-Algorithm
are	O
tuned	O
.	O
</s>
