Bottlehead Forum

Bottlehead Kits => Mainline => Topic started by: truong_guitar on February 23, 2018, 10:55:47 PM

Title: Is the result of the measurements correct?
Post by: truong_guitar on February 23, 2018, 10:55:47 PM

I finished my mainline.
Resistances check out fine.
Terminal Voltage (DC):

+275vDC on the Power Supply Board 275V --> Mine 252V - 262V
+6.3vDC on the Power Supply Board 6.3V --> Mine 6.27V
IA on the A side C4S Board 275V --> Mine 252V - 262V
IA on the B side C4S Board 275V --> Mine 252V - 262V
Breg Regulator Board (A sides) 220V --> Mine 219V
Breg Regulator Board (B sides) 220V - Mine 217V - 218V
-reg Regulator Board (both sides) 0V - Mine 0
Kreg Regulator Board (A sides) 8-12V - Mine 12.36V - 12.46V
Kreg Regulator Board (B sides) 8-12V - Mine 11.55V - 11.56V

Power transformer is 240V.
AC voltage is from 220 to 230.

Is the result of the measurements correct?

Thanks

Title: Re: Is the result of the measurements correct?
Post by: Paul Birkeland on February 24, 2018, 05:26:32 AM

Yes, those look OK.  Some are a bit low because of the line voltage.

-PB

Title: Re: Is the result of the measurements correct?
Post by: truong_guitar on February 25, 2018, 10:24:37 PM

Thanks Caucasian Blackplate.

Bias at terminal 20, 30 is still 145V?

Title: Re: Is the result of the measurements correct?
Post by: Paul Birkeland on February 26, 2018, 04:51:58 AM

Yes.