Novice small white consult bosses, amplifier why would be so hot, outlined below the measured output current is 2 times larger than normal, changed several times, each point voltage are normal, but also the normal sound,

CodePudding user response:

Voltage is normal? The problem is the horn?

CodePudding user response:

reference 1st floor univerboy response:

voltage is normal? The problem is the horn?

My level is too low, can't above, I this is car amplifiers, board didn't horn, measuring sound is an external speaker,

CodePudding user response:

What sound, external acoustic impedance is not the same

CodePudding user response:

A simple passive speakers, this circuit board can be a normal voice, but the output current is very big, is not normal,

CodePudding user response:

Someone told me before is the problem that the power amplifier, but I changed several, problem is still the same,

CodePudding user response:

refer to the original poster qq_37096269 response:

novice small white consult bosses, amplifier why would be so hot, outlined below the measured output current is 2 times larger than normal, changed several times, each point voltage are normal, but also the normal sound,

figure?

CodePudding user response:

No PIC, no truth, Posting didn't review, how reassuring to make products

CodePudding user response:

Can't figure confirmed positive answer

CodePudding user response:

This phenomenon may exist the problem of too wide
1: pay attention to the output (into) capacitance match
2: the power supply is stable (filter for short circuit and voltage stabilizing circuit)
3: power amplifier model and peripheral circuit

CodePudding user response:

Horn of many are 1 w power consumption fever is normal, change a little point

CodePudding user response:

No problem, if the circuit is normal, it is best to add the cooling, most circuit fault are caused by heat, so temperature control is very important, my experience is based on the hand touch for a long time, can stand shall prevail,