UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Bush DAC90A

'LIVEWIRE?' · 22nd Oct 2019, 10:15 am

Good Advice there, Graham. Speaking of DAC90A's-is there ay reason why the output transformer shouldn't be mounted with it's primary side closest th the tagboard, and secondary side facing the front of the chassis? To me that is more logical than the other way round as shown in some illustrations, and it's how I plan to mount the O/P Tx on a 90a on which I'm working. I've checked and there's no likeliehood of any short circuit between adjacent components. In addition is there any convention as to whether the 'Start' or 'Finish' of the primary winding should go to HT+ ? AS no Feedback or 'Hum-Bucking' tap is used I would have said that the way the primary is wired in circuit is of no conswquence.

22nd Oct 2019, 10:15 am	#20
'LIVEWIRE?' Rest in Peace Join Date: Mar 2006 Location: N.W. Oxfordshire(Chipping Norton) Posts: 7,306	Re: Bush DAC90A - power but no sound Good Advice there, Graham. Speaking of DAC90A's-is there ay reason why the output transformer shouldn't be mounted with it's primary side closest th the tagboard, and secondary side facing the front of the chassis? To me that is more logical than the other way round as shown in some illustrations, and it's how I plan to mount the O/P Tx on a 90a on which I'm working. I've checked and there's no likeliehood of any short circuit between adjacent components. In addition is there any convention as to whether the 'Start' or 'Finish' of the primary winding should go to HT+ ? AS no Feedback or 'Hum-Bucking' tap is used I would have said that the way the primary is wired in circuit is of no conswquence. Last edited by 'LIVEWIRE?'; 22nd Oct 2019 at 10:25 am.