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Title: Stupid question on Airline Valco schematic
Post by: monfi on July 28, 2017, 09:11:26 AM

Hello, if I wanna sobstitute power section of this schematic,with a IC poweramp, what part of circuit i've to "remove"? (I not think is all things put after R10)
tnx in advance ;)

Title: Re: Stupid question on Airline Valco schematic
Post by: phatt on July 28, 2017, 10:02:14 AM

Yes R10 is the power amplifier input.
Phil.

Title: Re: Stupid question on Airline Valco schematic
Post by: monfi on July 28, 2017, 10:11:18 AM

:) :dbtu:tnx

Title: Re: Stupid question on Airline Valco schematic
Post by: J M Fahey on July 31, 2017, 06:45:34 AM

There´s a couple details to take care of:

1) that amplifier is a single supply (+46V) type, any chipamp you use will also need to be used in a single supply mode, some datasheets suggest one.
Most are dual supply.

2) being single supply, it needs capacitor coupled input *and* output.

3)an LM3886 would be happy with a +46V supply and will last forever; a TDA2050 is just on the edge, will work properly but heat sink it well just in case.

Title: Re: Stupid question on Airline Valco schematic
Post by: monfi on July 31, 2017, 09:24:01 AM

:tu: thank you very much

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Solid State Amplifiers => Amplifier Discussion => Topic started by: monfi on July 28, 2017, 09:11:26 AM