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RESISTOR TO REDUCE L200 POWER DISSIPATION ELECTRONIC DIAGRAM Instead of in series with the input, the resistor R can be connected between pins 1 and 2 of the IC if the load is constant. You can see this in the right figure. This will make some part of the load current flows through the resistor and the other part through the device.

Here's a layout based on the Jordan Bosstone, with a few changes. I've built one of these now and they sound pretty good.