Construction of RFIF transformers

The tuned RF/IF transformers built for radio receivers are lypif^diy w^tutd on common cylindrical form and surrounded by a metal shield that can prevent interaction of the fields of coils that are in close proximity to each other Figure 2-:WA shows the schematic for a typical RF/IF transformer, and the sectioned view (Fig. 2-JUB) shows one form of construction This method of building transformers

Input

L2 Output

Input 12

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