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VP26 Question
Old 15th October 2013
  #1
Gear Maniac
 

VP26 Question

Hello folks, I just finished building a VP26 (actually a VP312, but for our purposes, let's say I built a VP26)

According to this build guide, here, I'm supposed to put insulation between the input transformer and the ground plane of the PCB. I accidentally didn't do this when I built my module. How big of a concern is this? In what situations would it cause an issue, and what would be the issue? Noise? Signal loss? House burning down?

Thanks to whomever can help me!
Old 16th October 2013
  #2
Lives for gear
 
brianroth's Avatar
 

From the photos, I would say it is quite important to have the insulator in order to keep the metal bottom lid of the transformer from shorting out the pads on the top side of the circuit board.

Bri
Old 16th October 2013
  #3
PRH
Gear Addict
 

Maybe do a quick continuity check between each transformer pin and the transformer shield before attempting anything remedial.

Judging by the datasheet for the transformer, I would think that Pins 1-4, 5 and 8 should not have continuity with the shield.
Old 16th October 2013
  #4
Gear Maniac
 

Quote:
Originally Posted by PRH View Post
Maybe do a quick continuity check between each transformer pin and the transformer shield before attempting anything remedial.

Judging by the datasheet for the transformer, I would think that Pins 1-4, 5 and 8 should not have continuity with the shield.
The whole transformer is flat on the PCB. There is no space between the PCB and the bottom of the transformer's shield. Sooo, I'm guessing that kind of answers your continuity question?
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