Installing The Output Transformer

OUTPUT TRANSFORMER INSTALLATION

With your output transformer prepped, it’s time to locate the mounting hardware and install it on our PCB. By now all other components should already have been installed. Proceed as follows.

 

Fig. 74 From the DIY500 mkII Minimal Kit hardware bag, locate the (2) 7/8" 4-40 machine screws, (2) flat washers, and (2) 4-40 kep nuts.

 

Fig. 75 Insert the machine screws through the two holes from the top of your prepped output transformer, and add the washers on the bottom.

Fig. 76 It is VERY important that the rounded edge of the washer face down towards the PCB surface, and that the sharp edge faces the transformer.

Fig. 77 A profile view shows how the transformer sits on the washer, with the kep nut holding the screw on the other side of the PCB. Please be careful not to over tighten, or you may damage your transformer/PCB. Just a turn or two past finger tight is enough to properly grip.

Fig. 78 Place each tinned transformer lead through the designated hole, according to color.

 

Fig. 79 Now solder the leads on the bottom of the PCB

Fig. 80 Your completed PCB now looks like this. Next we'll test for bad connections before adding the front panel and module enclosure.

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