Re: a level project <-- need help
sorry for being a bit vague before
im looking for around 10 watts max to drive a standard 8ohm loudspeaker, and most likely a 9v dc variable power supply. the thermistor will measure temp of the MOSFET or PNP/NPN push and pull but im not sure which is best to use(this is where i need guidance).
i want the thermistor to control the volume but i have 2 options i could either:
1)construct a circuit that decreases the volume slowly when a certain temparature is reached (i need to think in further detail how to do this) so the thermistor in this instance acts as a thermal guard and for the mosfet/push and pull to minimize potential damage to the amp
2)construct a circuit whereby once the mosfet/push and pull reachs a certain temperature the thermistor triggers an op-amp comparitor circuit to switch the amplifier off. thus the circuit now has a thermal cutoff point
i prefer the former option but i need advice on which one would be best\easist to make.
i decided to do a level electronics because it is something that im interested in therefore it did not seem irrational to do it.
just give me some pointers :shock:
also:
the circuit will be assembled on breadboard,
what temperature do you reckon would be the max working temp,for my amp?