machll
New Member
hi,
im thinking of building an audio amplifier for my AS level course work, and could use some advice on achieving one to suit my needs.
the amplifier must:
work
if it can be avoided not a push/pull amp
as it is an A level project i also have to specify a problem to assess, therefor the amp i want to build must be temperature controlled by an input transducer(thermistor), but i am not to sure what would be the best option for this type of amp:
1) as temperature increases, resistance in the transducer increases therefore gradually decreasing the volume
or
2) as temperature increases, the increase in resistance through the transducer triggers an 743 op-amp to switch the amplifier off.
also if i cannot integrate a mosfet into this circuit could someone guide me onto how to remove the 0.7v distortion on the push and pull transistor amp? any help (in the form of diagrams or text) would be apprecciated. thanks in advance, Machll
p.s i have only just started electronics for a-level and have no previous experience in the subject so please feel free to correct me if im wrong.
im thinking of building an audio amplifier for my AS level course work, and could use some advice on achieving one to suit my needs.
the amplifier must:
work
if it can be avoided not a push/pull amp
as it is an A level project i also have to specify a problem to assess, therefor the amp i want to build must be temperature controlled by an input transducer(thermistor), but i am not to sure what would be the best option for this type of amp:
1) as temperature increases, resistance in the transducer increases therefore gradually decreasing the volume
or
2) as temperature increases, the increase in resistance through the transducer triggers an 743 op-amp to switch the amplifier off.
also if i cannot integrate a mosfet into this circuit could someone guide me onto how to remove the 0.7v distortion on the push and pull transistor amp? any help (in the form of diagrams or text) would be apprecciated. thanks in advance, Machll
p.s i have only just started electronics for a-level and have no previous experience in the subject so please feel free to correct me if im wrong.