I have no better idee. I used my last 2 chips (LM3875TF). You can also order the LM3875T by RS Components for € 5,30; I do not know were to get the TF ones in Holland. TF is easyer to use becouse they are isolated.
All i did till now on is mounting the tubesockets on the PCB's and looking in the catalogus off RS components wich relais is compatible with the PCB and the schematic. I take the Finder 40.52; they are high current and hase an operate time of 7 ms and a release time of 3 ms.
I am working on more projects at the same time, so there will be slow progress.
On the other forum i asked some things about the PSU, but i did not get any anwers for the moment. Mayby you know why the BOM speaks about 2 trafo's, each 2x18 VAC? i.m.o. is one of such trafo enough to get 35-45 VAC secondairys, putting boyh windings in serie.
All i did till now on is mounting the tubesockets on the PCB's and looking in the catalogus off RS components wich relais is compatible with the PCB and the schematic. I take the Finder 40.52; they are high current and hase an operate time of 7 ms and a release time of 3 ms.
I am working on more projects at the same time, so there will be slow progress.
On the other forum i asked some things about the PSU, but i did not get any anwers for the moment. Mayby you know why the BOM speaks about 2 trafo's, each 2x18 VAC? i.m.o. is one of such trafo enough to get 35-45 VAC secondairys, putting boyh windings in serie.
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