[ARC5] CORRECTION: Re: 274N and ATA: Not Exactly Identical

[David Stinson]

Should read:
> Here is a function diagram of the ATA modulator and a circuit 
> description:
> https://photos.app.goo.gl/Sxt5TSEdu921HcLt7
> https://photos.app.goo.gl/8qJ1ojJu3CLrN7zf7
> Please note there is a typo in the ATA description; R55 is 15K, not 1.5K.
>
> Here is the function diagram and description of the BC-456:
> https://photos.app.goo.gl/MdY37NJyx4Q63vzB9
> https://photos.app.goo.gl/HjbfF2Svs4MevjC28
> R55 and R56 both load the microphone transformer more heavily and divide
> the drive voltage to adapt the T-17's higher output specification.
> In the BC-456, the microphone current limiting resistor, R-54, is
> 80% higher in value than the one in the ATA modulator, further
> damping the T-17 drive.
>

-- 
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus