Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: marioed on June 11, 2021, 03:46:34 AM

Title: First Build and question about voltages [resolved]
Post by: marioed on June 11, 2021, 03:46:34 AM

Hi All,

I just completed my first build and the resistances all checked out ok but some of my voltages seen more than a bit off. I'd appreciate someone taking a look at these and giving me some feedback. Here they are:
Terminal        Voltage
1                   156.7 V
2                   157.9 V
3                    00.4 mV
4                   157.7 V
5                    76.9 V

6                     00.5 mV
7                    146.1 V
8                      00.8 mV
9                      98.0 V
10                    00.5 mV

I'm really wondering about the voltages on the #1 & #7 terminals. The transformer is wired for >115 V but < 130 V.
Regards,
Mario

Title: Re: First Build and question about voltages
Post by: marioed on June 11, 2021, 05:50:09 AM

I've added some pictures of the wiring. Both LED's light up and the two sides of each tube glow.

Title: Re: First Build and question about voltages
Post by: Paul Birkeland on June 11, 2021, 06:07:10 AM

You have a substantial miswire at your octal socket.

Some of the lower solder joints on the 1-5 terminal strip don't look soldered, or at least need some more heat for the solder to flow out.

Title: Re: First Build and question about voltages
Post by: marioed on June 11, 2021, 08:01:37 AM

Thanks Paul, I must've been half asleep when I did the octal socket. Corrected everything there and added more solder on the lower 1 - 5. The voltages are where they should be, the possible exceptions are where in the manual it says 0 V and I'm getting from 0.2 -0.5 mV. Are those within tolerances?

Regards,
Mario

Title: Re: First Build and question about voltages
Post by: Paul Birkeland on June 11, 2021, 02:14:10 PM

0.2mV is 0.0002V, and I'd call that close enough to 0 to be happy.

Title: Re: First Build and question about voltages
Post by: marioed on June 11, 2021, 03:38:58 PM

Here is a picture of my finished crack, put the Bottlehead badge someplace for safe keeping but can't remember where.

Regards,
Mario

Title: Re: First Build and question about voltages
Post by: Paul Birkeland on June 11, 2021, 04:33:57 PM

Looks great!

Title: Re: First Build and question about voltages
Post by: marioed on June 11, 2021, 04:54:17 PM

Thanks Paul,
Regards,
Mario